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Manufacturing - Science topic

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Dear Society,
I would like to ask for your help.
As part of my PhD diploma and thesis I conduct a research and would like to invite you to take part in a short questionnaire survey on topics related to the Operational Excellence of manufacturing companies and its relation to concept of Sustainable Development.
The survey is completely anonymous I would be very grateful for your responses. https://forms.gle/yjVsvW2k21rjQHVY6
Thank you for your support and your time,
Best regards,
Daniel Wojtkowiak
#operationalexcellence #manufacturing #sustainabledevelopment #management #research #sustainabledevelopmentgoals #sixsigma #leanmanagement #Industry4.0 #IoT #Agile #TPM #TQM #LeanSixSigma
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Reiterate the sentiments above. Also I think the questionnaire is a little wordy and long winded. Might of been better to try and make it shorter and more concise and you might get a few more people completing it.
Could of papers on Production Systems below that may or may not be useful for your research.
Best Regards
Martin
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CRCA comes in different grades, O, D, DD, EDD etc.
During sheet metal forming certain sheet thickness tolerances to be maintained.
Is their any relationship, lower sheet hardness have wider tolerances.
Sheet manufacturing perspective is expected.
Thanks and Regards
Navdeep
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The design specifications of any device are subject to many factors, the most important cost of design versus quality of performance.
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Quality performance
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The world’s experience (of developed countries) and economic literature in structural transformation witness that productivity growth in the manufacturing sector is steadily ahead of that in the service sector. However, current empirical studies in many countries including India and my country, Ethiopia, show the other way round: the service sector is growing faster than the manufacturing.
How can one interpret such an event in terms of economic transformation? Shall we expect services-driven economic transformations? What is missing and needs to be fixed, otherwise, and how?
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1. Paying attention to humanitarian management. 2. Providing moral incentives first and material secondly. Focus on manufactured goods required by consumers. 3. Try to reduce the profit margin a little.
📷
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Hello Researchers,
As from literature it was seen that aluminium alloy Al5083 can only be strengthened by work hardening and micro-alloying. Similarly, I want to know what are the only possible processes through which AZ91 can be strengthened.
Moreover, If you suggest the process with the any limitations it would add supplementary to my work.
Thank you
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perhaps the heat treatments on the material could be "calibrated" in synergy with the parameters relating to friction stir welding to optimize the final microstructure of the alloy…. certainly not an easy job !!!
My best regards, Pierluigi Traverso.
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Hello evereyone
I am looking for a good source that can show me the properties of different manufacturing errors especially size of them (width, length, hight ) on surace of industrial products; errors like holes, chatter, scratch, gouge and so on.
I appreciate any help in advance
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Thank you François Blateyron for your help.
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Have anybody got involved in research with ERP (Enterprise Resources Planning) in Construction Project Management that useful in:
A) oil and gas fabrication
B) Marine Port
C) Refurbishment 
D) Housing development
My Question:
1) How about performance using ERP especially in Material Management Supply Chain?
2) Can ERP Integrate with e-commerce?
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6 Key Benefits of an ERP System for the Construction Industry:
1. Optimizing Planning
2. Simplify Project Management
3. Easier Cost & Revenue Estimation
4. Simplify Information Exchange
5. Improve Decision Making Process
6. Increase ROI
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I need to simulate the laser path with different patterns for metal additive manufacturing along with deposition of materials in ANSYS. Is there a way to do it?
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For simulating laser path in Ansys Workbench, download 'Moving Heat Source' extension from the Ansys store.
This video will be helpful:
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Hi all :)
I hope you are all good and happy :)
I am facing some problems when trying to build an arena software model using common template for the following airline terminal assignment.
I made the following hand-written model for task 1 (see model 2 task 1) and implemented it in arena software, but I faced the following problems,
a) I cannot make passengers move through five different agents, since from the main entrance block, I can route to only one agent, so when I run my model all passengers move only to the selected agent. Please see main entrance block.jpg. Also, when I chose Seq or Expression options I receive an error. Connect option does not work either.
b)Every time I run the system while passengers only move through one agent, I receive the following run time error at count number 45, please check error.jpg. Then when I press run again it runs and stops at count number 138.
I even used "AdvServer" & "Enter" blocks but still faced problem (a).
Finally, for task 2, I made the following hand-written model but was hoping you can confirm whether it is right or wrong. Please see model 2 task 2.jpg.
Thank you so much :) Your help is greatly appreciated since I am stuck and cannot make any progress beyond this point.
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Yeah @Alyson Da Luz Pereira Rodrigues, I didn't know about that before asking this question. I have sorted it already. Thanks a lot :)
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I am working on building a process layout to find bottlenecks within the facility. However, throughout building my simulation I need to make the process labeled "Stack Rtator Lams" contingent on having a part from "Cut Keyway 2.1" and "Machine 1.1". I am confused on how to continue and hoping for some answers or insight?
Right now I just have connections running from Cut Keyway 2.1 and Machine 1.1 to Stack Rtator Lams, but Stack Rtator Lams is running when it has a part from either cut keyway or machine and I need it to run when it has both / be idle when it is waiting for one of the parts. Thank you in advanced.
I also have attached a photo and my file if that helps anyone.
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If you use blocks (template panel) you could use two flows of entities, using "SIGNAL" and "WAIT" for coordinating the two. Then, one of the two flows can be disposed if you don't need it anymore (for instance, in modeling assembly processes).
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I am new to ARENA simulation and I have the following problem. I will describe the manufacturing system that I want to model.
I have the following manufacturing system (see attachment 1)
There are two different queues, in queue 1 there is only order type 1, and in queue 2 there is only order type 2. Depending on the type of order, either order type 1 or order type 2 has priority
  • Order type 1 is processed first/has priority at machine 1 (process1) if machine 2 (process2) is off
  • Order type 2 is processed first/has priority at machine 1 (process1) if machine 2 (process2) is on
  • If machine 2 is off and there are no orders of type 1 in the queue in front of machine 1 then order type 2 will be processed at machine 1
After order type 1 is processed it is disposed of, and order type 2 goes to machine 2 (process2)
But there is also another condition. Machine 2 is only turned on when there are 3 orders in the queue in front of it. If there are less than 3 orders in the queue in front of it, machine 2 will be turned off.
  • Machine 2 can only be turned on when there are 3 orders in front of it. So It has to wait until machine 1 is done processing all orders of type 1 before it can start processing orders of type 2.
  • if machine 2 is off and there are no orders of type 1 and machine 1 is processing order of type 2 and suddenly an order of type 1 arrives. Machine 1 will then finish processing the order of type 2 and will start processing the newly arrived order type 1. Once this order is processed it will start processing orders of type 2 again. This goes on until there are 3 orders of type 2 in front of machine 2 and it is turned on. Once machine 2 is turned on, machine 1 will give priority to order type 2 until machine 2 is turned off again.
so my question is how do I model this manufacturing system. I have made kind of a start (see attachment 2) but I'm to ARENA and just can't seem to figure it out.
Any help would be appreciated.
Thanks in advance.
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In order to switch on and off resources you must use schedules. For the priority of
entities you can use queues (as a block) and then you can switch to priority queue rule. I hope this helps.
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Will it occurs during the moulding or compacting process, profile grinding section, handling of pressed parts before sintering process and during sintering process. Also any method or process to eliminate it ?
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Why not think about using additive manufacturing in this process?
Regards,
Wiltgen
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Most of the references I found were on the economic productivity in agriculture but very limited application in manufacturing sector. I would appreciate if anyone could share the references on this.
Thank you in advance.
Best regards,
SNK
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Interesting question Econonic Productivity deals with production of agricultural yiels such as crops, cow, goat, fish etc & Manufacture System means how can processing this agricultural products for future, trading, use in today and prepare another food material.
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I am proposing to work with Shape memory alloy wires. Kindly suggest reliable suppliers in India or foreign manufacturers who will supply to India
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I am proposing to work with Shape memory alloy NITI sputtering Target . Kindly suggest reliable suppliers in India or foreign manufacturers who will supply to India
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While feeling the shared pain of costly and slow PCB Manufacturing process. Which also makes the hardware creativity and education much costly and slow. I was trying to figure out how can we decrease the cost of PCB manufacturing, get it made quickly and still maintain the level of quality we currently get. I came across the concept of using UV laser for Board cutting boards and drilling board plus using Masked SLA type of process for UV expose.
  • To me, this seems like a revolutionary setup.
  • You can make every board different, which makes enables mass customization
  • Very less wear outs as there are no drill bits to die
  • Automation can be a much higher decreasing need for costly labour and faster lead time
  • Fewer machines and setup costs which makes the footprint of the plant smaller
  • Above 2 points can make PCB Manufacturing feasible outside china as well
  • Maybe we can mitigate the setup cost of PCB and bring down the cost of proto PCBs to the cost of PCB manufactured at scale
All these seem that for at least 2-layer rigid or flexible PCB, a lot of initial costs can be mitigated and prototype PCB manufacturing cost can be decreased.
So what am I missing? What are the technical or commercial challenges you see in making with this way of manufacturing a PCB?
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Much costly and slow process
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As we know Industry 4.0 is using many new technology including robotics, but are the Industry 4.0 implementation is always necessary using automation? Because automation is heavily discussed in Industry 3.0, especially computerization automation. Or maybe we can ask : using automation are Industry 4.0 or Industry 3.0?
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Industry 4.0 seeks to integrate and digitize the following six levels of execution
and information processing within a corporate manufacturing and supply chain setting:
1. CLOUD (artificial intelligence generates
actionable insights and product opportunities)
2. ENTERPRISE LEVEL (ERP servers)
3. PLANT LEVEL (manufacturing execution
systems or MES)
4. CELL LEVEL (SCADA)
5. MACHINE LEVEL (machine automation,
machine controller)
6. ENDPOINT LEVEL (sensors, motors, drives, IO)...
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  • I'm currently working on a project designing a Polycarbonate manufacturing plant. I found two main processes for the production such as phosgene method and transesterification method. But I couldn't find any Process Flow Diagrams related to the process. This transesterification method was developed by Asahi Kasei Corp. Japan. Anyone has an idea about the better process to produce Polycarbonate and Unit operations involved with it?
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hello
I'm in the process of starting my masters thesis, and I would like to research on manufacturing process Mining area(like process flow / production line). I need good topics for my research . Can you suggest some topics? Can you suggest some advanced topics?
thank you
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What according to you should be researched/accessed with respect to WC based solid lubricant tools? What is your view with respect to future research in this area? (For e.g. Tribological study etc..)
Thanks in advance..
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Thanks Soumitra Paul sir for your extensive in depth answer. I will surely go through the articles.
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Based on my experience, to start a lean culture in a leanness organization it all starts with the senior management and leadership team engagement. It is not something to be delegated to human resources area, and it is not only about outsourcing consultants. However, when the implementation phase is complete, the kick-off phase begins. This said, in your understanding what are the top lean culture implementation challenges to be addressed by a leanness enterprise?
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Hi There Leandro,
I am curruntly implementing lean manufacturing systems and tools. I have found that one fo the biggest challeneges is adherence to the lean systems and tools.
I have overcome this through effective communication and by implementing recognition process. This shows everyone how well they are doing against over areas and identifies the areas performing the best.
Regards
Martin
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I need VLC transceivers is there any manufacturing company dealing in LED's transceivers  ?
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I have tried the VLC transceivers produced recently from two places: Fraunhofer institute (HHI) and Hyperion Technologies. Here is the LinkedIn link for the latest LiFi product of Hyperion Technologies.
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Dear colleagues,
I'm working on methodology of transforming existing organization for manufacturing companies. Could you please guide me on how to approach the following questions:
1. How to split task between operational routines (repetitive tasks, business as usual) and dynamic routines (transformations, NPD, innovation etc.) for different functions (sales, manufacturing, HR, etc.)?
2. How to calculate optimal number of people involved into each type of activities in different functions (e.g. dynamic routines in sales)?
3. How to approach motivation for different combinations of task types and functions? What KPI or other ways of performance control should be used for each of these combinations?
Thank in advance!
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Keep it simple.
Any operational design should answer some questions, but always has some main questions to answer, previously.
Step 1 (mandatory)
Define your competitive strategy. Then design your Supply Chain, once this design is done. You can continue designing your operational process, do you need now the flows (operational, informational and financial) and cost numbers to decide about the next step.
Questions
a) What is the strategy that this operational process to feed?
b) What is the demand that this process should provide?
c) In that part of the Supply Chain, this process acts?
d) How this design maximize profits and minimize costs?
e) Is the main process or a support process within our Value Chain?
f) Which are your goals and objectives? What did we expect of the process? this is very important due to that you must design based on these objectives.
g) Define your Q&A standard, so this is your base of comparison, to in the future build you KPI's. Based on it's you can develop your control objectives and for consequence the KPI's.
1. How to split tasks between operational routines (repetitive tasks, business as usual) and dynamic routines (transformations, NPD, innovation etc.) for different functions (sales, manufacturing, HR, etc.)?
This question is answered for my past comments, without it, you only made an incomplete work that as always in the text is a theoretical misrepresentation of the reality.
Your design process considers certain restrictions or thinking in unexpected, that isn't the norm, your design is for your central limit of the process, any deviation must be treated as that it's an exception.
2. Once you know the operational number you need to define with that resources you will develop any process, this could be with people, machines, automation or other means. if you decide to use people you need measure times in each part of the process and build a "Line Balance" and if is productive to define machine and times a Mass Balance"
3. KPI's are only control measures that we design to measures relevant or critical operations or processes, that we need to keep in or near to the central limit (search SPC). You should develop it when you have mapped your processor when you are followed all the before steps.
Greetings
Alfredo
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Whether you're making stuff physically or virtually, you ARE making stuff. Don't take my word for it, see what the U.S. Department of Labor has decreed: https://dasisolutions.com/appreticeship-program
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Garett Scott Patria Thanks Garett Scott Patria this has important implications for apprenticeships here too. ILO said biggest challenge for VET from the pandemic was teaching technical and on the job training, on-line!
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Cutting parameters are cutting speed, depth of cut and feed rate.
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  • DOI:
  • 10.1007/s11018-015-0806-z
  • Main parameters:
  • Feed, Machining parameters, Shape of cutting edge, Stiffness of tool system.
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What are the best methodologies that can be utilized for ergonomic analysis of a manufacturing cell?
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Current methods suggest the use of Digital Ergonomics, to capture the movement, determina load moments, forces and articular torques to determine with even more presicion the critical body parts for overexertion. Solutions could also be developed using virtual reality and workstation simulation to review options and anticipate any pitfalls when doing actual implementation
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Please help me to understand which failure on a production line should be prioritized when comparing failure 1 which occurred 5 times in the month and consumed 10 hours (total) versus failure 2 which occurred 10 times but consumed 5 hours (total). What index (or calculation) can I use to know which failure to prioritize for improvement efforts?
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Newton Mapowo, in addition (or even prior) to checking the financial (and availability) consequences of the failures I believe that you also need to assess if any of the two failures have larger consequences than the other in term of for instance safety or environmental aspects. In my opinion and experience many of those types of consequences overrule the financial aspect and if those types of failures are down-prioritized short-term they might (or most likely will) affect the financial aspect to a greater extent long-term.
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Hello, guys. I am currently researching Industry 4.0 in the automotive industry, and I was wondering which websites and or resources I can use to get more answers? I have kept the survey short (about three to minutes).
Additionally, if any of you work within the automotive sector, whether manufacturing, management, marketing, supply chain, or even sales, etc. Your responses will be highly valuable. Thank you.
If you wish to complete it, this is the link below:
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Dear Researcher,
You can find industry 4.0 related articles and contacts for automotive researchers at SAE ( Society of Automobile Engineers ) Journals: https://www.sae.org/publications/journals
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What are impacts in pharmaceutical API manufacturing industry and finished formulation?
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Please take a look at this useful link.
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Tunas Manja Group operates the retail stores known as TMG Mart that provides and sells various products which are mainly the groceries and houseware goods. However, the mart is facing problems in finding the best solution for sorting process which caused the customers having a hard time finding their desired items in the mart.
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Hello,
A means of transforming the sorting process in a hypermarket into a lean system, using a Six Sigma approach, is to process products by product families and then by sub-products families. Is it clear enough for you ?
The best!
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Mechanical contact stylus techniques are the traditional method of measuring the internal diameter (ID) of shafts. Bore gauge is a good example for this method. Now I am trying to use non-contact method and after researching about different non-contact techniques and the available equipment, I found confocal chromatic sensor very accurate (as low as 0.5-2 microns). I learned how to use it to find some GD&T features like run-out but I don't know how to find the bore size (internal diameter). The case study is explained below. Any suggestion is highly appreciated.
Geometry: A cylindrical shaft with internal diameter of 0.926" and length of 40"
Question: To find the size of ID by using confocal chromatic sensor.
Thank you
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Several
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I am using ANSYS but I have heard that ABAQUS and NASTRAN results are far better than ANSYS.
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I think Abaqus is a good software to help you.
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Hello,
I am a novice researcher in the field of clustering algorithms. DBSCAN was the one which its mathematical background draw my attention to itself but unfortunately, except biological- and medical-oriented fields, I couldn't imagine any other use cases for the algorithm. I would appreciate if anyone introduce me some useful resources which DBSCAN is used in fields except medical or biological ones. According to my bachelor degree (Industrial Engineering), I'm particularly looking for industrial and manufacturing instances.
Regards.
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Let’s think in a practical use of DBSCAN. Suppose we have an e-commerce and we want to improve our sales by recommending relevant products to our customers. We don’t know exactly what our customers are looking for but based on a data set we can predict and recommend a relevant product to a specific customer. We can apply the DBSCAN to our data set (based on the e-commerce database) and find clusters based on the products that the users have bought. Using this clusters we can find similarities between customers, for example, the customer A have bought 1 pen, 1 book and 1 scissors and the customer B have bought 1 book and 1 scissors, then we can recommend 1 pen to the customer B. This is just a little example of use of DBSCAN, but it can be used in a lot of applications in several areas.
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The new generation of technologies such as Additive Manufacturing (AM) and Cloud based manufacturing can potentially affect the manufacturing location decision resulting in strategies such as offshoring, reshoring, near-shoring, outsourcing, in-sourcing etc. In which areas does Industry 4.0 impact location decisions?
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We know that there are several benefits in Industria 4.0 and Decentralization is one of them, because it allows the location of the factory in a different location from its suppliers and thus allows cost savings (Ilaria), but at the same time generates another problem, which is one of the biggest Ind. 4.0 defects - the lack of standardization precisely because of the distance and little oversight of its manufacturing suppliers (Kazantsev). My suggestion is to use the Multi-Criteria system (Ramirez), associating with it decision levels such as: Lower cost; higher productivity; greater availability of inputs and larger market niches. I believe that if you answer these questions you will get the best place to install your factory. Good luck at project.
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Consider raw material as Al scrap (Si-6%, Mg-1.5%, Zn-1.1%, rest-Al and minor impurities).
I need details of how Si is being added for alloy preparation?
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Chandra Bhanu Basak . I considered this at the very first, but the costing of the final alloy ended up critically compared to its market price.
Is there any other way for bulk production?
Is it the way how manufacturing players, manufacturing 1000T to 4000T per month, are manufacturing?
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Hi everyone, 
I am looking to obtain a copy of the CD-ROM and an activation key that is part of this upgrade kit. We have a MyCycler at our college that has not been upgraded with the temperature gradient function. This machine was discontinued by Bio-Rad in 2012, and the upgrade kit is no longer available as  result from the manufacturer.
Please let me know if you can help with a source.
Thank you.
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Just in case anyone is still following this thread, the BIOS update cannot be applied without a piece of hardware made by Bio-Rad, a USB dongle. This is most unfortunate for anyone with an old MyCyler that is still in service.
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  • let say if there are X1, X2, X3, X4,....................Xn factors and each factors depends on i (i=1,2,3,4...........) factors and N=25 factors of manufacturing performance.
if let us say
  • X1= f (X2, X3, X4, X5............Xn) (i=n)
  • X2= f(X1, X3, X4, X5............Xn) (i=n)
  • X3 = f(X1, X2, X5, X6............Xn) (i=14)
  • and so on.
  • I want to know the level of dependence of each factor on other factor. eg what is the dependence level of factor X1 is on factor X2 and how much is the level of dependence of X2 on X1. Level of dependence of factor X1 to X2 and X2 to X1 are different. how such a model can be analyzed using statistical methods. please refer to the figure for further clarity.
  • Please suggest some statistical/Mathematical Method or technique. this problem is related with the factors influencing the manufacturing performance but these factors are also influenced by each other to a large extent. so basically if one parameter changes it automatically affects all other performance parameter.
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Dear Abdul Gani,
In this situation you can use structural equation modeling (SEM).
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I'm curious if anyone knows how spin columns are made. I can't seem to find any technical articles or instructions so I'm at a loss. Additionally, I'm interested in knowing if anyone has any idea about the types of treatments (if any) a silica spin column would receive before it's shipped/used as well as if there are different compositions of columns. I know there are ones for RNA versus DNA and plant vs. blood or bacteria but are there differences among these types? Is it even possible for a company to optimize their 'silica spin columns' in their kits specifically for the kit's reagents? Please advise or share any related information you have. I'll even take anecdotes.
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This is the kind of information you get out of patents application and there should be plenty of those for you to look up. I will attach one example that details the use of hydrated silica for DNA extraction (I suggest you go to the end of the page as well and look at all the citing patents as these will have newer information based on kits from different companies).
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We know that the manufacture of electronic components has been reducing their costs in recent years. But what are the main challenges to facilitate the reduction of component costs?
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Switching losses and their numbers
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I want the cutting resolution to be less than 0.1 mm and I don't want to damage the sample.
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Best solution is laser cutting, but you could also try abrasive water jet machining.
In second case do some preliminary testing.
I do not think that conventional machining is useful in this case.
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I am interested in this article and cannot find content related to this. Please suggest.
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Hi Nidhi,
You may want to read about TRL Calculator. You can use this as start point. How scientist assess Technology Readiness Level which could be possible applied to your field.
thanks and all the best.
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For the application of Industry 4.0 and hence making the machine self aware, what optimization techniques could be used for a machining process? (Preferably please explain a mathematical model regarding the same or a case study)
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Some times in order to know the important parameters, it is necesary to use a methodology such experiment design. Although it is time consuming, it is better in order to obtain better results
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Hello all,
For some research on super(sub)critcal fluid extractions, I am examining SFE CO2 systems. On websites of manufacturers of these plants they state that the CO2 used in extraction can either be recirculated / recovered or vented into the atmosphere.
Now I am wondering how this is done in practice, do companies using this technology recover their ''polluted'' CO2 after a number of extractions. Or do they simply just vent it into the atmosphere and use new CO2.
Thanks in advance.
Gerrit van Beek
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You can also try ethers and acetonitrile-water solutions.
Run it in static mode and do not recyle.
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Good day!
Does anybody know a company providing on-demand platinum machining service?
Thank you in advance for your help!
Kind regards,
Reda
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Donald L. Kinser Thank you sir for your response. Could you please provide more information?
Regards,
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Many publications use discrete angles and layer thickness for laminates. Is that outdated?
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What are the reasons for using gallium nitride in the manufacture of LEDs?
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Adding to the respected colleagues, the most important properties of LED materials is that they must have direct bandgap to favor direct band band radiative recombination rather than nonradiative recombination via traps according to SHockley Read Hall recombination mechanism. So, also the radiative recombination lifetime must be much smaller than the nonradiative lifetime to increase the electrical to light conversion efficiency. This requires that the material is fabricated as a single crystal material with very low chemical and geometrical defects that can act as effective recombination centers. This is very important issue for the material properties.
Best wishes
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hello
I need some information about the production process and material properties of seismic base isolators .e.g. LRBs (lead rubber bearings). I'd really appreciate it if you could share this kind of documents if you have any.
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Kindly check the factory to support you with processing
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Surfboards consists of a foam (lightweight) core and a fiberglass (stiffness) skin. Wet hand-layup is the most commonly used manufacturing method, several layers of fibre glass fabric are laid up on the foam core and laminated using epoxy resin.
My question is about the fiberglass layup sequence for the skin. A surfboard is mainly subjected to compressive stresses (primary one being weight of the surfer). The compressive strength comes from the epoxy resin and the foam core, whereas the fiberglass adds stiffness to the skin.
A typical layup sequence used is 2-3 layers of woven fiber glass fabric (plain weave 6 oz each). My question is if the requirement is stiffness, wouldn’t Uni direction (UD) provide higher stiffness (2 plies of UD (0,90) vs one woven ply )? UD is non crimp hence stiffer and it will also have less resin rich pockets (more resin = brittle). Almost every surfboard I have seen uses woven plies, there must be a reason for it..?
Secondly, lit. reports "Placing a 45 degree ply on the surface of a laminate increases its buckling resistance". Now fibres mainly carry tensile loads whereas compressive loads are carried by the matrix, so I dont quite understand why specifically a 45 degree ply can help in preventing buckling (which is a result of compressive load).
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I would suggest populating the [ABD] matrix and maybe try some of the formulations suggested in Section 4.7 here: (http://www-eng.lbl.gov/~ecanderssen/Composite_Design/Laminate_Design.pdf). I am not sure what literature reference you saw, but the answer would depend on end condition and aspect ratio.
Hope this helps
Aniruddh
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I am talking about Green synthesis
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Fullerene
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I am in the beginning stages of researching manufacturing companies in the U. S. who have implemented servitization initiatives in the last 10-20 years. Does anyone have an idea where or how I might begin to compile a list of companies that have done this>
Best regards,
Rip Stauffer
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check manufacturingusa.com. that site may have some articles that could gerate leads.
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Hello All
I have done my masters in manufacturing. It would be a great if i get a topic/problem on IOT in manufacturing for my PhD research
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Thank you so much Prof. Ljubomir Jacić. for the interesting links.
Regards, MO.
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repetitive pulse laser is extensively used in manufacturing sector
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Tapering and re-deposition can be lowered by repetitive pulse laser.
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I am looking for manufacturers that could produce customized temperature controlled enclosure ranging from +15 degC to +25 degC, with a precision lower than +/- 0.05 degC.
This would fit on a bench to test samples up to 2m long.
So far I have listed only two companies, and I am keen on extending the list. Thanks for your help.
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If you have the resources, time, and space, it might be best to order the instruments and supplies and build your own that is customized for what you need
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How can i do research on all three combined aspects of additive manufacturing, sustainability and industrial 4.0 from technology point of view. Materials not included.
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hi Mr.Deepak Doddagoudar,
you can look at these references .
Magdalena, G. A. B. R. I. E. L. "Industry 4.0 and sustainability impacts: Critical discussion of sustainability aspects with a special focus on future of work and ecological consequences." (2016).
good luck ,
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Let us face it. Society is walking away from higher education. And they use us in the process of killing serious academics by evaluating us to death. Many a mediocre faculty member is eager to manufacture the rope. See the beautiful article by Professor William Weber (attached)
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Diplomacy is key in this kind of situation.
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I'm looking for a small quantity of Ti3C2 MXene for some preliminary experiments. I am unable to manufacture it myself because our tube furnace doesn't reach a high enough temperature. Is there someone willing to supply a small amount (20-30g) for some preliminary experiments? I have access to a budget to pay for manufacture and shipping. Thanks in advance.
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I saw someone is selling on aliexpress.
Do you think Is there a way to find out if it is real MXene or not?
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Hello,
In a new project I'm about to start in the garment design industry, I will need to extract some surfaces from the scanned body of a person in order to customize parametrized pieces of clothing based on these surface measurements.
I already used Rhino on another manufacturing project. All its algorithms can be called from Python scripts and reusing its visualization, object creation, geometric algorithms was a big time saver.  The problems I encountered were the following:
- Non standard Python 2.7 version (Iron Python) not compatible with lots of recent libraries (difficult to use NumPy, SciPy, etc).
- Non robust mesh algorithms (intersections, boolean operations, etc.)
I would like to get advices from people using other CAD like CATIA, SolidWorks, Pro-E, etc about the ease with which one can extend and customize these software to serve as "frameworks" for custom applications.  Which language can be used? Can it call standard C/C++ code or Python code?  Are they offering advanced and robust algorithms on triangular meshes?
Thanks
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not sure you should be looking at CAD apps then ... sounds like you're better off with CGI apps like Blender, Maya, & 3DSMax. Those apps have solid mesh implementations and rich APIs.
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Dear colleagues, after struggling for a long period to find the right answer to this question, I will try this time through online social media. I am trying to find a way to calculate something that seems to be obvious, but that is not: how to have a reliable measure of vertical integration in a sector or a corporation? By vertical integration I mean: what is internalized/produced vs outsourced/bought by dominant OEMs in a given sector? E.g. How much Ford Motors is producing in-house vs buying parts to suppliers in the market? What is the trend in the past decades? I am studying the auto sector, but I think it could be also relevant for other sectors in manufacturing. Is there any data to capture this degree of vertical integration (e.g. in-house value added)?
Thanks in advance,
Mathieu Dupuis
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There are different methods to calculate the degree of vertical integration.
The official statistical offices use the ratio Value added / Production or sales/turnover. Easy to find the right data, easy to compare sectors. But, you need to discuss some evolution of the products technological progress for each sectors
If you can collect accounting data (enterprises or statistical offfices), you can also calculate the ratio : subcontract purchase or purchase of goods / sales. Here again, you need to manipulate carrefully this indicator if you work on historical data and also, there are some specific traditions (way to interpret the rule) from one sector to another one (and from one country to another one) about the ways to register these data in the accounting system.
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I am searching for commercial plants manufacturing Mono-potassium phosphate(MKP) of which raw material is Potassium chloride (KCl).
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hi, did you manage to come up with the procedure?
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Want to try COP from different vendors! Is there any one in China?
Thanks!
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Sergey, Thank you very much!
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Please suggest the similar grounds for comparing Manufacturing sector and Construction sector in terms of safety management.
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Hi, I am working on the manufacturing sector safety.
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There is a lot of research about field effect transistors as biological sensors. However, I cannot find a single commercial supplier. I am looking for naked chip (with graphene, SiNW, CNTs...) that I could functionalize with my molecules of interest, in order to test my upstream biochemical strategy independently of the electronic readout. One problem at a time.
Would anyone know where to find chips with a reasonably consistent quality? Sigma has some graphene FETs, but the manufacturer is unresponsive and I really need technical expertise on the product I'll be using.
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graphene FETs
I'm using them actually and they still need some attention, but overall, they are pretty okay.
Cheers,
Marcin
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It is a conundrum. Why should meylin be produced by oligodendrocytes or schwwan calls rather than neurons themselves. It seems that Myelin is indispensible to neuronal function and should be the part of neurons (produced by neurons themselves) rather than an manufacture of other cell moieties?
Any comments out there?
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Just to expand on how useful it is to have specialization in cells:
Some neurons that reach from the spinal cord to the feet have axons about a meter long. And those axons have to be maintained: you need pumps to keep the ion concentrations just right, sodium channels to carry the action potential all the way down, neurotransmitters constantly being packaged into vesicles at the very end of the axon, etc. All those proteins, all transcribed from DNA in a nucleus a meter away. All that ATP to power them. All the intracellular transport that gets them where they need to go. It's a very demanding job.
Meanwhile, myelin is made of tons and tons of cell membrane (complete with membrane proteins!) wrapped around the axon. Something on the order of 1 square millimeter of membrane from each myelinating cell. A single cell, making all those membrane lipids and all those membrane proteins, and replacing them when they get old or damaged. And that meter-long axon has something like 10,000 cells each making just one little section of myelin. So if you unwrapped all the myelin from that one neuron and laid it out flat, it would be around 100 square centimeters.
Imagine if the poor neuron had to make enough membrane to cover like half a sheet of paper all by itself! There's no way a single cell could do that, especially on top of all the other things a neuron already has to do. Making myelin would put a huge burden on the neuron.
On the other hand, if 10,000 Schwann cells (or oligodendrocytes in the CNS) make the myelin, each one has a manageable amount of membrane to make. And the neuron doesn't have to do any work--in fact, its work gets easier because the myelin makes transmission more efficient. It can get by with a smaller axon, fewer sodium channels, etc. Plus the myelinating cells secrete growth factors and so on that help the neuron stay healthy.
The goal of myelin is to make it easier for the neurons to do their jobs, and that's only possible if the neurons don't have to make the myelin themselves.
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One manufacturer gives values closer to 10 µm/m, which is normal for martensitic stainless steel.
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I found two:
The pdf presents ones with 1µm/m and this link another wich I don't know.
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Could you suggest some applications where Shape Memory Alloys (SMAs) have utilized the FGM concept in its manufacturing.
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Once again, there are some interesting tribological applications of FGM with SMA components in MEMS such as smart composite switch made of anode aluminium oxide (nanostructured graded coating) on the SMA actuator as well as controlled gas sensor made of anode aluminium oxide.
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Hello everybody,
For my master theses I'm doing research on high-growth firms. I have a sample of approximately 1100 firms from 6 countries. These companies are assigned to 1 of the 19 industries they operate in (services, manufacturing, retail etc.).
Now I want to test the hypotheses: "that high-growth firms are overrepresented in the service industry" (so more firms in the service sector compared to other industries)
Firstly, I want to do it for the whole sample and afterwards for every country seperatly.
Does somebody know how to test this in SPSS?
Thanks in advance
David
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I also agree with the chi square position. Alternatively, univariate analysis using odds ratio will determine effect size. With the use of service industry as the reference variable, it will be possible to effect sizes with 95% confidence interval. The result with which ones have higher or lower odds than the reference variable and decision on the statistical significance of these ratios.
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Given the processing times for parts to be manufactured in different machines in a flow shop line, depending on the sequence in which the parts are manufactured, the makespan (i.e. the total time that elapses from the beginning to the end) can be reduced. The lower bound is the minimum value of the makespan.
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Dear Joao,
To get the lower bound (LB) you can take any approximation algorithm with a guaranteed accuracy (F^0-F*<=D for any instance of the problem, where D is a constant, F^0 is the makespan value for the approximate solution). As the result, you have F*>=F^0–D, i.e., LB=F^0–D. Similarly, if you take an approximation algorithm such that (F^0-F*)/F*<=D, then LB=F^0/(D+1).
For example, consider the following simple approximation algorithm for the flow shop problem with M machines. Let p_jL is the processing time of job j on machine L and m is the smallest integer such that m>=M/2. Calculate a_j=\SUM_{L=1}^m p_jL and b_j=\SUM_{L=m+1}^M p_jL. Consider the two-machine flow shop problem with the processing times of jobs equal to a_j and b_j for the first and for the second machine respectively. This problem is O(n log n) solvable (Johnson's algorithm). Let F^0 is the corresponding value of the minimum makespan. Then for the initial M-machine flow shop problem we have F*>=F^0/m, i.e., LB= F^0/m.
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I need a one-fits-all antibody diluent for different panels of anitbodies. Trying to reduce overhead cost of running the experiment.
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Thanks to all of you for your valuable suggestions.
Cheers!
Emmanuel
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Dear colleagues, here are some points that I would like some discussion and, if possible, some answer:
I am having difficulty achieving a mixture with ideal workability in the fabrication of cement boards using the hastchek method.
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Interesting question
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What are the software’s which can be useful in manufacturing unit?
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ARENA is best software available for modeling of manufacturing units.
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a. Machining after tampering
b. Tampering before machining
This disc rotor material is Mild steel.
It is to be used in the brake assembly of a vehicle.
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Hi everyone,
As you know EVA materials using for capsulation proces in the PV Solar Industry. I want to clean the melted EVA without damaging the coating from the antirefle-covered glass surface. Is there anyone could give me suggestion for solvent type in this process?
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Thanks to all,
@Sadek H. Lafta, i can't apply temperature to module after lamination process but i will try acetone for cleaning also i have to consult EHS speciallist about labor health effect.
@ Rishibrind Upadhyay, i started to examine the article you shared, I will try the solutions once you have the proper usage conditions.
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Would someone help with specific answer?
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Actually ''mechanics and integrity of additive manufacturing'' is the research title but I am still confused with these terms related to AM
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I think you are right to be confused. I think this is a weird choice of terminology.
It could refer to the structural integrity of the printed part, or to integrity in the sense of how well the output represents the input, i.e. spatial accuracy. There are also other interpretations; see the other answers.
Anyway if I were you I wouldn't look at this one term too much. If the research title is unclear then you should get your information elsewhere. The person who wrote the title might provide more info which could help you to understand what was initially meant by the title.
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Hello,
I recently am starting to do some research in neuroblastoma. In my study, I need to do some in vitro assay and started to culture some cell lines. Currently I have SK-N-BE(2) and SK-N-AS cell lines. SK-N-BE grows just fine but I am struggling with SK-N-AS. I cultured them under the same condition using high glucose DMEM manufactured by genedirex with 10% FBS. Can you share your experience with this cell line? thank you very much.
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Hello Narpati,
we let our SK-N-AS cells (as well as SK-N-BE(2)) grow in RPMI1640-medium (ThermoFisherScientific) with 10% FCS. They do not need extra high glucose concentrations to proliferate properly.
Maybe you could also check your tissue culture for mycoplasm?
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I want to do a double digestion with EcoRI and NotI.
The EcoRI is from ThermoScientific. The recommended buffers are Orange buffer and EcoRI buffer.
The NotI is from NEB. The recommended buffer is Buffer 3.1
According to Thermo buffer compatibility catalogue, both the enzymes should be working fine in buffer Orange.
Can this digestion be carried out with both the enzymes in Orange buffer? Or should I go for a sequential digestion?
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