Mahros Darsin

Universitas Jember · Department of Mechanical Engineering

3D printing is a process of making three-dimensional solid objects from a digital file process created by laying down successive layers of material until the object is created. Many filaments can be used in 3D printing, one of which is PETG (PolyEthylene Terephthalate Glycol). PETG is a modification of PET (PolyEthylene Terephthalate) with added gl...

3D printing technology or additive manufacturing is manufacturing by adding materials to objects until it is shaped as expected. This technique is easy and cheap for printing polymer-based materials in the form of filament. Recently, some metal-containing filament has been introduced in the market, one of which is eSteel composed of 45% wt. steel a...

It is normal to apply cutting fluid to machining, but using it excessively will harm the environment. One of the efforts to reduce it is to apply minimum quantity lubrication (MQL). This study aims to minimize the use of cutting fluid by designing a cutting fluid delivery system with Arduino Uno control. The developed MQL system can be controlled b...

SS400 steel is steel with a low carbon content (max 0.17 %C) or low carbon steel. SS400 applications are widely used in the construction industry, railway industry, bridges and others. The use of SS400 which is in direct contact with the surrounding environment will cause the appearance, quality, and usefulness of the material or material to decrea...

Al-SiC is a composite composed of AA6061 as a matrix and SiC as a reinforcement particle. The variation of mass added will affect the mechanical properties of the composite because Al-SiC is hardenable, which means that its mechanical properties can be improved by adding the reinforcement component. However, an excessive portion of SiC leads to a d...

Mobil listrik merupakan kendaraan yang digerakkan oleh motor listrik, motor listrik memperoleh daya dari listrik yang tersimpan pada baterai. Chassis merupakan komponen yang penting pada mobil listrik. Chassis merupakan bagian dari mobil listrik yang berfungsi sebagai penopang sistem dalam mobil listrik, pada chassis terdapat tegangan maksimal dan...

Background: Bionic hand prosthesis helps restore the original hand function. A survey on prosthetic users concluded that 79% thought that their devices were "too heavy". Therefore, the weight of the prosthesis is a major cause of user discomfort and fatigue. This research was aimed at the reduction of hand mass bionic prosthesis by optimizing the s...

This study aims to find the optimal parameters to produce good dimensional accuracy and maximum bending strength in the FDM 3D printing using a Cu-PLA filament. The parameters used in this research are nozzle temperature, layer height, and infill pattern with 2 levels for each parameter. The experimental design used the Taguchi L4 method (2 3). The...

Additive manufacturing (AM) has been trending topic in industrial revolution 4.0. One technique and the most widely used AM is fused deposition modeling (FDM), which uses a melted filament and deposited it layer by layer. The common filaments used are made of PLA, PP, and ABS, which are available at the online market with variety of prices depend o...

Agricultural waste is huge in the villages as a by-product of harvesting. Without proper management, they become useless or even a danger to the society and environment. This paper aims to describe a report on the community service activities of the authors in an attempt to resolve the agricultural waste in the Villages of Sempu-Banyuwangi and Arja...

Keywords: ABSTRACT Chip formation, MQL, Taguchi design. Applying cutting fluid is a common case in machining, as it can prolong the tool life. However, excessive using it may cause a bad affect on the operator and environment. Alternatively, applying minimum quantity lubrication (MQL) to reduce the bad effects yet gain a maximum advance of using cu...

Application of cutting fluids in machining can improve machinability but it may danger to the environment. An alternative to reduce this bad effect is by using minimum quantity lubrication (MQL). This study aims to determine the most optimal parameters in the AISI 4340 steel turning machining process to produce the best surface roughness with MQL c...

Applying cutting fluid in machining is a typical case, inevitable in grinding, cooling down the tool, prolonging tool life, and gaining a smoother surface. However, the petrol-based cutting fluid may harm the operator, and after being used, residue may damage the environment. This research attempts to reduce those harmful effects using petrol-b...

SS400 is structural steel, which is categorized within low carbon steel. It could not be hardened by heat treatment. In order to increase its properties, SS400 is enhanced with surface treatment and surface plating. Chrome is an element added as an alloy or as a coating to increase the corrosion resistance of steel. It also improved the surface...

This research aims to find the optimal combination of parameters to obtain the maximum tensile strength of 3D printing products made of eCopper, which consists of 45% Cu and 55% PLA. The parameters used were nozzle temperature, layer height, print speed and bed temperature with three levels each. The Taguchi L9 (3^4) experiment was used for des...

Limited knowledge of society about cultivation activities in the urban area leads to low practical urban farming activities during the pandemic. This study aimed to develop a productive urban community to increase family food security and apply science and technology through aquaponic ponds to optimize small areas around their house. This community...

Seiring kenaikan konsumsi energi minyak dan menurunnya cadangan minyak bumi, maka perlu beralih ke minyak nabati sebagai sumber bahan bakar terbarukan, salah satunya adalah dari biji nyamplung. Biji nyamplung banyak terdapat di desa Kebondalem, Kecamatan Bangorejo, Kabupaten Banyuwangi. Pengabdian masyarakat ini bertujuan mengenalkan potensi minyak...

Efficiency and effectiveness are indispensable things in the production process. Accurate use of existing resources and the shorter cycle time of production are of particular concern to optimize the production process. This research aims to implement automation to a conventional blow molding. An advanced attempt was carried out to use the Internet...

3D printing technology or additive manufacturing is manufacturing by adding materials to objects until it is shaped as expected. This technique is easy and cheap for printing polymer based materials in the form of filament. Recently, some metal-containing filament has been introduced in the market, one of which is eSteel composed of 45% wt. steel a...

This research aims to design and build a 3D printer machine using Arduino Mega 2560 and compare it to a standard 3D printer using a 3D printer module and bed temperature. The design simulation between the two machines is compared from the von Mises stress, displacement, and safety factor values. In contrast, testing machine performance by comparing...

The cutting force that reacts to cutting tool and workpieces will result deflection. Deflection is the cause of product deviation and vibration sources that can shorten the life of the cutting tool. Simulation of machining process is carried out to get an estimate of cutting force in some machining process conditions., then compare it to the experi...

Machinability is a measure of how easy a material to be machined. It can be assessed in some aspects: surface roughness and surface integrity of the machined parts, cutting speed, forces that work during machining or energy consumption, tool life, and chips formation. This article describes the machinability from tool deterioration perspective of t...

Measuring the forces that work during machining has been being concerned by researchers for years. There are three main forces that work in turning: thrust force, axial force, and radial force. Thus, feeding force measurement is needed in machine manufacturing. This research attempts to develop measurement method through feeding force, using strain...

The purpose of this paper is to review from early days until recent time the development of maintenance management methods from maintenance textbooks to give a glance view for researcher and practitioner where maintenance start until recent development and practical application of maintenance management. The methodology approach is by reviewing an...

Using cutting fluids in machining with petroleum-based creates health hazards issues to the machining operator and environmental problems due to the waste. One effort to reduce it is by applying minimum quantity lubrication (MQL). This research aims to develop an MQL system with an Arduino controlled based on the previous design. The main hardware...

There are several ways to assess machinability, viz. forces that are working during machining, the surface roughness of machined part, chip formation, and tool performance. This article aims to observe the machinability from the tool performance perspective when machining with minimum quantity lubrication (MQL). The MQL device can either be time-c...

In the previous study, frame tube design analysis is developed to provide a significant reduction in stress and deformation. This study aims to analyze the frame tube composite design. The design analysis by using FEM software is used to model frame tubes with shell elements. The layer angle orientation is set as design parameters. Material is carb...

Penelitian ini bertujuan mengamati efek penerapan metode pelumasan berkuantitas minimum atau minimum quantity lubrication (MQL) pada pembubutan baja AISI4340. Perangkat MQL yang dibuat dilengkapi dengan sistem kendali berbasis Arduino yang dapat disetel manual atau otomatis. Pahat yang digunakan adalah jenis insert DCMT 11. Desain ekesperimen pada...

This study aims to observe the tool deterioration following application of minimum quantity lubrication method (MQL). The designed MQL system is completed with an Arduino controller system which was able to be either manually-controlled or automatically-controlled. The tool used in this study is DCMT 11 insert type. The Taguchi method using the Ort...

This research aim is to find out the type of defects in production process of 600 ml bottle water at PT TIB Jember, then some attempts to resolve the problem. The p-chart of Statistical Process Control was employed. The control chart in September 2019 shown that some data beyond the ultimate control limit (UCL). The defects were categorized into th...

Fused Deposition Modeling is known as one of the 3D printing technology where it used a thermoplastic filament to produce a prototype or a 3D part. FDM will print out the 3D part, layer by layer on the platform of the 3D printer from bottom to top using the extruded molten thermoplastic. However, there is no information about the volume enclosed by...

Nyamplung tree or calophyllum inophyllum is widely spread and plentiful in Indonesia. Its seed is rich of oil (65-75% oil content) and potentially developed as non-edible oil. However, in fact it is not commercially yet. At the moment, some research has been carried out by using its oil for biodiesel, basic ingredients for soap, beauty products and...

Two purposes of painting of the automobile body, i.e. protection and aesthetic. For the aesthetic one, scientifically measured its glossiness. The purpose of this study was to determine the effects of painting parameters using a spray to its glossiness. Three parameters varied were: (i) comparison of paint composition and thinner (1:1.2; 1:1.4 and...

In solar powered water heaters, solar radiation falls into and then absorbed by tube collectors which are then used as a source of water heaters for household and industrial needs. One effort to improve efficiency in solar powered water heater systems is by adding a reflector under the collector. The main purpose of this study is to find out the ef...

SS400 is low carbon steel that been used for industrial construction such as bridge, which is operated in the open environment. Therefore, its mechanical properties and its quality would be decreased along with the time elapsed. In some previous research, it is proofed that electroplating was able to increase the corrosion resistant as well as the...

Sebuah alat kendali semprotan cutting fluid pada minimum quantity lubrication (MQL) telah berhasil dibuat. Alat yang bekerja dengan sistem Arduino ini dihubungkan dengan sensor suhu yang diletakkan pada sisi pahat dan berhasil mengendalikan kapan cutting fluid harus disemprotkan dan kapan harus berhenti. Tujuan dari penelitian ini adalah untuk memp...

The cutting fluid is one of the essential factors in machining to increase machinability. The issuance of ISO 14000 about reducing the use of cutting fluid for its danger for operator and environment has encouraged many researchers to find ways to minimize its use. The Minimum Quantity Lubrication (MQL) is an answer to it. To further reduce the use...

In machining excessive use of cutting fluid can have a negative impact on the environment. An alternative to overcome this problem is by using the minimum quantity lubrication method (MQL). In MQL method the cutting fluid is flowed by compressed air. This research aims to design and implement an Arduino-based controller for further minimize the use...

Drillability is a term derived from machinability which is applied for drilling. This paper proposes another perspective of drilllability, i.e. form chips formation, a never observed previously for material of titanium alloy 6246. This study will broaden the basic knowledge about machinability of this material, which up to this time is barely avail...

Energy is a primary need for humans which until now is still sourced from fossil fuels. The use of solar energy as alternative energies can be used as a water heater. This shows that innovation is needed in improving the performance of the water heater collector by modeling the reflector with the intention of the temperature and efficiency produced...

PG X in Jember is one of the agro-industries that processing sugar cane into sugar crystals. This factory works seasonally. To ensure the consumer demand for sugar, the sugar factory should operate efficiently during their production season. In fact, it was found that at the downtime at the boiler department at this factory was up to 181 hours for...

This paper focusses on effect of heat treatment on chips formation and forces resulted during drilling titanium 6246. Aim of the research is to improve drillability of this material. The heat treatment steps were heating at a certain temperature for three hours followed by different cooling methods. Three heat treatments were chosen out of several...

The number of vehicles has increased every year. This increase was accompanied by an increase in the number of accidents that occurred. Accidents that occur result in damage to vehicles so that repainting is needed. Painting is an effort made by applying paint in liquid form on the surface of an object to create a layer on the surface of the object...

Painting is a coating process that is applied to the surface of an object. The purpose of painting is for protection and decoration. In terms of protection, paint can be assessed its thickness. While for decorative, paint can be seen measured in terms of glossiness. The paper concerns on study to determine a combination of parameters that can produ...

Abstrak Pengecatan adalah proses pelapisan permukaan dengan pelapis berbentuk cair dengan tujuan untuk perlindungan dan keindahan. Untuk tujuan keindahan, salah satu tolak ukurnya adalah kekilapan yang dapat diukur dengan gloosimeter dalam satuan gloss unit (GU). Tujuan dari penelitian ini adalah untuk memeroleh nilai GU optimum dengan memvariasi p...

Drillablity derived from term of machinability, which is applied in drilling. In this study, drillability of titanium alloy 6246 has been investigated through observation of two responses of drilled holes quality, i.e. surface roughness and holes roundness. Taguchi L18 Design Experiment-based approach was used to gain an optimum setting of five dri...

This paper concerns on drillability of Ti-6Al-2Sn-4Zr-6Mo (Ti-6246) from the point view of thrust force (Fz) & torque (Mz) using a TiAlN CVD coated carbide tool. The condition of the material was varied with three different heat treatments. Whereas, the machining parameters were varied in cutting speed, feed rate and cooling application method. Tag...

This article describes the TiAlN PVD coated carbide drill tool performance after being used for drilling of Ti-6246 Titanium alloy. Every drill bit was used for single drilling and then being observed with SEM from flank and rake view. Taguchi method L18 design of experiment was used to find the optimum parameters. Wear was not found in this resear...

This article describes the chips formation during drilling of Ti-6246 titanium alloy using TiAlN coating carbide insert drill. At the early stage of drilling, the chips had a conical spiral shapes regardless the parameters used and heat treatment conditions. However, as the depth increases different types of chips were observed depending on the par...

Titanium and its alloys are hard materials, wear resistant, high strength to weight ratio. Therefore this material become very promising, especially in aerospace application. However, its application restrict when face machining processes. This material is very hard which is very difficult to manufacture by machining. Its low Young’s modulus tends...

Abstrak Electric Discharge Machine (EDM) sinking merupakan salah satu jenis EDM yang sering digunakan dalam pembuatan cavity untuk cetakan maupun dies, sehingga tuntutan terhadap kepresisian produk dan kekasaran permukaan menjadi perhatian utama. Adapun variabel yang berpengaruh terhadap nilai kekasaran permukaan pada proses EDM Sinkink ini meliput...

Abstrak Kekasaran permukaan dari komponen-komponen mesin mempunyai peranan penting pada kualitas komponen mesin tersebut. Oleh karena itu, dalam memilih proses pengerjaan, aspek permukaan ini perlu dipertimbangkan. Adapun parameter yang mempengaruhi kekasaran hasil pembubutan adalah nose radius, pahat bubut, kecepatan potong, laju pemakanan dan ked...

Friction welding is one solution to solve the problems joining of metals which are difficult to be welded by fusion welding such as aluminum. The process was run by rotating a rod upon another metal and force was applied. Consequently, heat arose below the melting point and made the metals molten joined together as force continuously applied. In th...

Wire drawing is cold working process to reduce the cross-sectional area. The value of reduction is different in every process, depend on the needs and working parameters. The degree of reduction causes differences of copper wire rod in the characteristics and quality, such as its tensile strength and roughness. The purpose of this research is to de...

Handicrafts made of marble in cylindrical form are manufactured by turning machine. There are three steps in manufacture, viz. turning, grinding and polishing. At the moment turning result in coarse surface, so it needs bit long to grind and polish. The other problem faced is that the tools brake often. It because the tools used made from HSS. For...

EDM (elektrical Discharge Machining) is the process of the workpiece with a spark jumps that occur in the gap between the electrode and the workpiece is immersed in a dielectric fluid and occur periodically. Material for die casting mold is generally made of tool steel (Tool Steel) AISI type H13 is processed using the EDM. This material was chosen...

One main application of Electrical Discharge Machining die sinking is for mold machining, which required a smooth surface. To achieve this purpose some parameters influences the surface roughness should be optimized. This research emphasis on finding a combination of electrodes material, current and on-time which resulting the smoothest surface. Re...

The development of biodegradable plastics manufacturing process to a continuous process can be done by combining the single screw extruder as mixing and compression molding unit as forming units. Development can be done by varying the extruder screw geometry, is the angle Helix and the compression ratio. The purpose of this study was to determine t...

Electrical Discharge Machining working processes (EDM) is used to make dies in the manufacture of a product. Material removal rate and surface roughness result from the process is influenced by parameters used. The relationship between the rate of construction materials and surface roughness on the Electrical Discharge Machining (EDM) are very inte...

Aluminum and aluminum alloys have properties that are less well when coMPared to steel, such as specific heat and has a high conductivity. They are also easily oxidized and form an aluminum oxide Al2O3 which have a high melting point. Consequently, when they are welded the fusion between base and weld metal will be blocked. Moreover, if the cooling...

Aluminum is widely use in current manufacturing. One method to join between two or more aluminum sheet is using welding. Ideally a weldment, by this is meant the complete joint comprising the weld metal, heat affected zones (HAZ) and the adjacent parent metal – should have the same properties as the parent metal. There are, however, a number of pro...

Chamomile is a package which is applied for cosmetic. In industry this package is being processed by blow molding. The project aim is to optimize time for processing the package. There are many parameters that influence cycle time during production; in this project only three of them were varied, i.e. blowing pressure (X1), blowing time(X2) and sto...

Chamomile is a package which is applied for cosmetic. In industry this package is being processed by blow molding. The project aim is to optimize time for processing the package. There are many parameters that influence cycle time during production; in this project only three of them were varied, i.e. blowing pressure (X1), blowing time(X2) and sto...

Friction surfacing is a process of depositing a material in form mechtrode TM to a substrate material by friction. Aim of this process to gain the hard and strong coated like surface whereas the base material is still in its condition and usually low price. Common application of this process is for making industrial knife. In early development of t...