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Publications
Publications (29)
The cultivation of algae has gotten more attention from algae enthusiasts who have seen the benefits of algae in many uses. To maximize productivity, the parameters for growth of this algae must be controlled, such as pH, turbidity, light intensity, and the mixture solution for optimal growth. In this paper, an automated spirulina algae cultivator...
The surface electromyography (SEMG) is extensively used in assessing injuries in the musculoskeletal parts of the body. Integrating intelligence in such applications impacted the development of intelligent medical devices. The conventional way of assessing hand injury level is manually and subjectively done by experts to identify the type of rehabi...
Models of different actuators for hand rehabilitation gloves have been sought by many developers. Hand rehabilitation exercises require flexion and extension of the fingers. However, existing actuators for this application do not conform to these requirements. In this paper, a bi-directional wedge-type segmented soft pneumatic bending actuator is p...
Research on road safety is continuously developing with the applications of sensors and technologies. Another area that draws the attention of the developers for road safety are in the road accident response. As the number of riders and cyclists increase, so do the accidents particularly at night where visibility is limited. This study presents a m...
The computerized numerical control (CNC) machine is often coupled with a plasma torch when applied to cutting metal sheets. Prior to cutting, metal sheets are commonly marked manually using ink markers as a guide for bending and
cutting. This manual marking has been observed to be time consuming and inconsistent. Therefore, integration of ink marke...
Shredding is a widely used process of stripping or cutting scrap materials into smaller pieces in the manufacturing industry. Before disposal, it is required for companies to shred the scrap material for destruction and data protection.
This study aims to improve the proper disposal of scrap materials, develop an efficient method for destroying the...
Polyethylene Terephthalate (PET) is a widely used form of plastic to make bottles for mineral water, soft drink, ketchup, pickle, etc. The global production of PET is expected to increase from 42 million tonnes (2014) to 72 million tonnes by 2020. The waste generated by PET packaging creates not only environmental issues but also disposal problems....
In the industrial environment, it is important to know the different corrosion attacks on mild steel. Some of the solutions to prevent or slow down the rate of these attacks in metals are through the use of nitric acids, sulfuric acids, and hydrochloric
acids for various industrial processes including acid pickling, chemical cleaning, and oil well...
span>The use of cashless credits in the Philippines has grown since the pandemic has begun. However, the transitions to these changes using cashless transactions have to be addressed. Kiosks and other machines that offer cash-in have been significant, but a model that does not use transactions through banks can be possible which can offer both cash...
Philippine Metals Volume 9, 2022
ISSN 2980-4975
One of the essential requirements in the soldering process of probe needle cards is to have better fixtures for more accurate and simple operation. The fixtures must properly be designed to mitigate dimension variations in the soldering of probe needle cards. Workpiece positioning and constraining ar...
Philippine Metals Volume 9, 2022
ISSN 2980-4857
Rail coding is used for marking lead frames before the die-bonding process. It seeks to differentiate the units created batch-by-batch. The current rail coding procedure for TO packages in the case of a semiconductor company needs to be automated to eliminate the manual marking using tweezers. Since t...
Integrated circuit (IC) testing involves equipment and product interface board setup. Complex interfaces and obsolete components are some of the factors affecting the board functionality which results in manufacturing downtime. The legacy boards must be simplified so that it needs advanced tools for the lay-out and designing of test boards. This st...
This work shows that the performance of the V-8
Solenoid engine can be further improved by integrating a splash
lubrication system based on the recommendations of the
previous studies. The lubricant used to dissipate the heat from
the coils is the Castor MAGNATEC 15W-40 based on the
material selection process conducted. Furthermore, a hall-effect
s...
This study was conducted to enhance the overall equipment efficiency by designing and developing an alarm driver board for tower lights and annunciators of the legacy handlers in microelectronic packaging. Audible and visible alarms are primarily used for monitoring the status of the legacy handler machines at a distance. These are important to man...
The two-part legacy board device under test (DUT) pad has been very useful for testing of microelectronic packages. However, this board has been subjected to many repair endorsements due to open connection of DUT pad and cut traces of the board components as recorded. Board re-spin is used to improve the performance of the test boards in microelect...
Library components are composed of devices, symbols, and footprints which are the fundamental parts to design and develop printed circuit boards (PCB). In archiving PCB libraries, the creation and checking of the component’s parameters are very important. The checking of footprints and pin configurations from datasheets are manually done which caus...
![Fig. 6. Actuator bending in different air pressures [20:40:60: 80:100:120].](profile/Mark-Enojas/publication/357447935/figure/fig2/AS:11431281103994553@1669911613475/Actuator-bending-in-different-air-pressures-204060-80100120_Q320.jpg)
Most of the models of soft robotic gloves can do flexion and extension. However, there are other hand rehabilitation exercises such as tendon glide which requires variations of finger pose. It cannot be done with just a single motion of flexion or extension. Individual joint control is needed in order to achieve the normal-to-maximum range of motio...
Several models have been developed for rehabilitation and mimicking of human hands for prosthesis. There are different designs and structures that have been modeled and implemented. Soft robotics has taken its toll on many applications in the biomedical field. However, there is still ongoing research in modeling anthropomorphic designs. This paper...
p>Thereare recorded downtime in the current testing processes of microelectronic packages. The available test equipment, the isolation of the power supply modules and the processes of testing must be changed in order to minimize the downtime. This study presents the design and development of a voltage monitoring device made of a 14-bit analog to di...
p>Cleanroom parameters such as temperature, relative humidity and particle count are vital in maintaining cleanliness. People and machines working inside the cleanroom are main contributors for the sudden changes of the separameters. Measurements and monitoring of these parameters are therefore necessary to reduce rejects and downtime in the produc...
Abstract—One of the highest prolonging machine downtime in the production line in the manufacturing of microelectronic packages is the adjustment and correction of Direct Current (DC) bus voltages of the power supply modules. Power supply module 4 (PS4), which consists of 5 linear power supplies (LPSs): +5V, +15V, -15V, +24V, and -24V, normally use...
This study presents an automated process and setup for
pre-seal bake of microelectronic packages. It reduces the
tendencies of error for critical temperature and vacuum
pressure control during the pre-seal bake. The new suggested
automated process delivers a faster and more reliable system
than that of the presented case of a semi-automated pr...
This paper presents a method of development and
implementation of a board checker for Fast Loop Circuit
(FLC) for Microelectronic Packages test. Some
microelectronic package has fast loop circuitry which has instrumentation amplifiers installed. These are connected to
the device under test (DUT) such as operational amplifiers
test boards. A fa...
Many semiconductor industries use Automated Test Equipment (ATE) which comprises of linear and mixed signals instruments. External Signal generators are usually not associated to the equipment’s calibration or checker routine. This research introduces a method of testing the functionality of the signal generators by establishing a signal generator...
The use of electromechanical relays in automatic testing
equipment to switch signals to specified connections
experience stress and electrical arcing. In order to verify that
these components are the cause of hardware failure, it is
necessary to properly validate their performance and
mechanical life. However, measuring the coil resistance and
cont...
The Philippine government through the Department of Science and Technology (DOST) helps the micro, small, and medium enterprises (MSMEs) to support and sustain growth and address their needs on availing cost-effective solutions. Most of the MSMEs which apply clear bottles for their products use manual inspection. These are prone to human error that...
A growing research and development of soft manipulators that are able to mimic movements of human hand for prostheses and rehabilitation is one of the main streams in advanced robotics technologies. Soft compliant materials are overtaking the role of hard materials for this cause. This paper presents a model of soft pneumatic bending actuator (sPBA...
This paper presents a study in the development of a real time wearable locator device for distress which uses human pulse rate. A person who is in distress normally has delayed reaction. However, a good means of identifying distress is through pulse rate in which a notification can be done even before the person can make a distress call. An increas...
Questions
Questions (4)
Dear Researchers.
I am looking for a way on how I could derive an equation that relates pressure and bending angle for the soft pneumatic actuator that I am developing in my project. The actuator that I am modeling is a hemicircular type. And I wanted it to be segmented, like a finger that I could individually control each joint. There is a mutual movement when I pressurize one of the joints of the actuator. Therefore, other joints, which are not yet actuated move when one joint is being actuated. The Illustration is a model of one joint. The whole actuator is a homogeneous soft actuator run in FEA. The pressure applied in the each chamber in a joint is radiates in all directions on the walls of the chamber. The base is assumed in-extensible, therefore, does't elongate. The interaction between the outside walls of the chambers produces bending when inflated.
Thank you for your help.
Good day to all researchers.
I am looking for a solution on how I could all at once run threads in arduino. Suppose I wanted to control one input and output using (proportional, integral, derivative) PID program, and another PID for another input and output to be controlled, is there any way I run them both without affecting the execution time (the current time and elapsed time) for each feedback.
Thanks a lot for your help.
Hi. I am new in using ABAQUS. I noticed that the step increment is based on time and it is not a uniform increment. I am simulating a hyperelastic material designed with chambers that are actuated by uniform pressure on the walls. I wanted to see the results for each pressure increment, not on time increments. Say for example, I want to view the results for 4 kPa pressure increments from 0-252kPa. I hope someone could help me on this. Thank you.
Hi! I am new in using Abaqus. I am doing a project on hyperelastic materials (rubbers). I wanted to see the result for each uniform pressure increment (STEP) instead of steps based on time increments, in the results after successfully completing running the job. What I currently am doing is just set the load pressure (ramp) and run the job, then get the results, and then edit the load pressure again and run the job and get the results. It is very tedious to simulate a pressure from 0-250 kPa with 1 kPa increment, like I have to do it 250 times. I want to automatically run a job (with load pressure of 250 kPa) and in the results I would be able to click every step with 1kPa increment.
Thanks a lot for your kindness.
