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Anwar Ilmar Ramadhan
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Journal of Applied Sciences and Advanced Technology
Published by Universitas Muhammadiyah Jakarta
ISSN : -     EISSN : 26226553     DOI : 10.24853/jasat
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering
Journal of Applied Sciences and Advanced Technology (JASAT) is an international peer-reviewed journal dedicated to interchange for the results of high quality research in all aspect of applied sciences, advanced technology. The journal publishes state-of-art papers in fundamental theory, experiments and simulation, as well as applications, with a systematic proposed method, sufficient review on previous works, expanded discussion and concise conclusion. As our commitment to the advancement of science and technology, the JASAT follows the open access policy that allows the published articles freely available online without any subscription.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 87 Documents
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Analysis of Feasibility Indicators of Two Wheel Engine Oil Using Light Sensor (LDR) Ike Yuni Wulandari; Yoana Nurul Asri
Journal of Applied Sciences and Advanced Technology Vol 3, No 2 (2020): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.3.2.51-56

Abstract

The oil feasibility measurement tool to determine the viscosity level contained in a two-wheeled vehicle using a light sensor (LDR) has been designed and implemented. Testing through five oil brands with homogeneous specifications that are generally used by two-wheeled vehicles. The manufacture of this tool uses three integrated systems in one method, namely: input via the LCD and laser sensors, the process system by the microprocessor in the form of Arduino, and the output in the form of an LCD final display. These three systems are connected through the gear box block mechanical system. The results are converted to the electrical resistance value that appears on the indicator. The set point in the form of the range of electrical resistance was obtained through experiments from the five new oil brands. Furthermore, the wheels of the Gear Box are rotated to produce a value in the form of RPM. From these five types of oil, data is obtained that the gear box which rotates in a duration of twenty minutes with a minimum speed of 210 RPM and a maximum speed of 720 RPM indicates that the quality of the oil is in a good category
Stamping Disability Analysis on Material SPC 270 E Sri Anastasia Yudistirani; Kisman H. Mahmud; Ery Diniardi
Journal of Applied Sciences and Advanced Technology Vol 3, No 3 (2021): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.3.3.75-80

Abstract

Good production results will be a benchmark for a company to compete in today's free market era. To improve good quality is determined by several factors, including: raw material factors, production processes, labor, the state of the engine or dies and the environment. Basically, the production results are not all good, because there are several factors that influence it, as noted above. To overcome this, a company sets a quality requirement because it is very useful for good and quality production results. In determining good quality, it is necessary to conduct a research on the raw material at the SPC 270 E foot step by means of the testing method that will be carried out. The testing methods carried out consist of: tensile testing, hardness testing, metallographic testing, chemical composition testing, and dye penetrant testing. From the results of the research that has been done, it can be seen that the thinning material has an average tensile strength of 307.41 N/mm2, the standard used by the company is 270 - 323 N/mm2 and is still in accordance with the tolerance value. Whereas the material with a lump has an average Vickers hardness value of 124.24 HV, the standard used by the company is 135 HV and still fits the tolerance value.
Design of Refrigerant Leak Detector on Arduino Uno – Based Refrigeration System Sobri Sobri; M. Subroto Aliredjo; Yusuf Aditya Nugraha; Istianto Budhi Rahardja
Journal of Applied Sciences and Advanced Technology Vol 3, No 1 (2020): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.3.1.9-16

Abstract

Refrigeration loos has big impact on inefficient system operation, increase power consumption, higher maintenance cost and moreover contribute to global warming. The purpose of this study is designing refrigerant leak detection device, making a refrigerant leak detector, and testing the refrigerant leak detector in a refrigeration system. Research was conducted for six months, starting in November 2018 until Mei 2019 at the ice block factory owned by KUD. Usaha Mina, Semarang City. The stages of method used in this study include studying of literature, designing device, making device, and testing refrigerant leak detection device. As for the research result are as follows 1) The design of the refrigerant leak detector is made using CorelDraw Grapichs Suite X7 very easily according to the input and output to get desired function 2) In assembling components using jumper cable, it must be in accordance with the input that is in the program so that it does not cause a short circuit to component. Sensitivity level of this refrigerant leak detection device is very high, depending on how in programing the desire level of sensitivity and other factors such as NH3, NOx, Alcohol, Benzene, Smoke, CO2, and other gases. Because the gases will affect the level of sensitivity of device. 4) The testing of a refrigereant leak detector must be close to the source of leakage which serves to accelerate the device to detect leakage 5) The voltage needed by this tool is between 5 – 20V (DC).
Environmental Burden Computation in White Crystal Sugar Industry using the Life Cycle Assessment Methods Hermawan Hermawan; Yulian Syahputri; Kotim Subandi; Adriana Sari Aryani
Journal of Applied Sciences and Advanced Technology Vol 3, No 2 (2020): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.3.2.35-44

Abstract

Life Cycle Assessment (LCA) is used to assess environmental impacts that can potentially result from an industrial activity, from cradle to grave. LCA assessment in accordance with the principles of ISO 14040 is carried out starting from the stage of determining the scope, collecting data, preparing the Life Cycle Inventory (LCI), formulating the Life Cycle Impact Assessment (LCIA), interpretation and presentation. At the LCI stage, data from a sugar factory studied is collected from the results of material balance analysis, exhaust gas analysis, liquid waste analysis, and solid waste calculations for the 2019 period. Life Cycle Impact Assessment characterizes each LCI data towards potential environmental impacts that are make it possible. Characterization was carried out by grouping the impacts on Energy Depletion Potential (EDP), global warming (GWP), Eco toxicity aquatic (ETA), terrestrial Eco toxicity (ETT), Abiotic Depletion Potential (ADP), Photochemical Oxydant Formation (POF), Acidification Potential (ACP) , Human Toxicity Potential (HTP), Nutrification Potential (NTP), Ozone Depletion Potential (ODP). The fourth largest contribution to the environmental burden of sugar factories based on 2019 data is GWP 375,966.95 tons of CO2 equivalent, followed by ACP 89,183.03 tons equivalent to NOx, EDP worth 33,086.91 tons of fuel oil equivalent, and NTP of 14,598.66 tons equivalent to COD . In addition, it also needs attention, namely HTP 11,621.83 tonnes equivalent to phenol, ETA 11,163.18 tonnes equivalent to BOD5, and ETT 9,748.49 tonnes equivalent to ash.
Molecular Dynamics Approach on Dislocation Emission from Crack Tip Under Stepwise Loading in Aluminum Andres Budiono; Hiroomi Homma
Journal of Applied Sciences and Advanced Technology Vol 3, No 3 (2021): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.3.3.97-108

Abstract

Molecular dynamics (MD) simulation is carried out for pure aluminum under stepwise loading condition. This simulation aims to understand the experimental results on impact fracture toughness of aluminum alloys under short pulse loading.  The model used in this simulation is featured by  an atomistic model with single atom and the [111], [110], and [112] directions, a center-cracked plate model by the atomistic model with 17,402 number of atoms, and the periodic boundary condition in z-axis to postulate the plane strain condition. The obtained results are some dislocations emitted from crack tip, a void nucleation and growth taking place ahead of the crack tip. This micro void was initiated from a dislocation core when the load was kept being constant. This micro void never coalesced with the main crack as the distance between the micro void and the main crack was too far atomically and the micro void growth was stabilized. Energy balance investigation shows kinetic energy of the system was very small and almost constant during the process.   The potential energy increased as the external load increased and then became constant when the load became constant. Significant fluctuation of energy was observed during dislocation emission. Some amount of barrier energy must be released for the dislocation emission. The qualitative understanding can be provided by this molecular dynamic simulation.
Paving Block Investigation Using Waste Plastic, Used Oil, And Styrofoam with Different Variables St. Nugroho Kristono; Muhammad Malik Arifandi; Yudi Dermawan; Istianto Budhi Rahardja; Ahmad Mahfud
Journal of Applied Sciences and Advanced Technology Vol 4, No 1 (2021): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.4.1.1-6

Abstract

Paving block is a composition of building materials made from a mixture of portlandcement or similar hydraulic adhesives, which are components of building materials that are very commonly used. But besides that, the dependence on the use of cement as an adhesive for Paving Blocks is still high. Therefore, the solution taken is to use waste plastic, Styrofoam, and used oil as materials for making Paving Blocks. Based on the results of data processing, it can be concluded that the manufacture of paving blocks using a mixture of plastic, used oil, and styrofoam has several stages, namely the stages of preparing tools and materials, taking and collecting plastic waste, used oil , and styrofoam, heating stages, mixing stages, the printing stage, the release stage and the drying stage, and the laboratory testing stage. This study uses 6 comparisons of mixed materials. The results of the trial of making paving blocks using a good mixture of plastic waste and used oil, namely with a composition of 67%: 33% with an average compressive strength of 63.2 MPa and water absorption capacity of 2.4% entered into quality A used for roads while paving blocks with plastic waste materials, used oil, and styrofoam have the best compressive strength value, which is 26.0 MPa with a composition of 40%:50%:10% and the absorption power obtained is 5.2%. B quality is used for parking lots. 
Comparative Analysis of the Amount of Fuel Use for Main Motor 1 in Theory and Reality in the Field During Operation One Trip at KMN. Cahaya Lapawawoi 01 Ade Hermawan; Teguh Binardi; Agustiawan Agustiawan; Samsi Samsi; Priyantini Dewi; Sobri Sobri; Istianto Budhi Rahardja
Journal of Applied Sciences and Advanced Technology Vol 4, No 1 (2021): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.4.1.7-14

Abstract

Ships are units used for transportation, logistics industry, fishing units and so on. In its operations, ships use fuel oil to move and reach their intended destination. The fuel oil used includes heavy fuel oil (HFO), medium fuel oil (MFO), and intermediate fuel oil (IFO). The main factors that affect the high and low use of fuel are rotation (rpm) and also the operating time of the main engine. Flowmeter is a measuring tool to determine the amount of fuel oil consumption in the engine. The function of the flowmeter is to measure the volume of liquid that passes through the device so that the total volume of liquid that enters a container / place or machine is obtained. Flowmeter and Tachometer are very helpful in calculating fuel consumption on board. Basically, with the use of high rotation, it can accelerate the speed of the ship's movement to reach its destination.
A Perspective Study on the Sustainability of Action for Change: Sociological Review of Wisdom Training Ersa Tri Fitriasari
Journal of Applied Sciences and Advanced Technology Vol 4, No 1 (2021): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.4.1.15-24

Abstract

Leadership Training known as Diklatpim IV, now called Supervisor Leadership Training based on the Regulation of the State Administration Institute No. 15 of 2020 concerning Supervisor Leadership Training (PKP) is a part of developing managerial competence through training. The training produces innovative product in the form of document that will be realized in the organization's unit. The perspective of the sustainability of action for change is an urgent thing to be studied considering the current pandemic conditions which then is expected to have an important role for society and organizations as a means of actualizing implementing action for change based on the commitment of training alumni participants. This study aims to analyze the realization policy towards the perspective of the sustainability of action for change and the utilization of action for change program from a sociological perspective on the sustainability of action for change for the Alumni of Batch 2 Supervisory Leadership Training which consists of 40 participants by combining qualitative approach carried out by survey data, observation, in-depth interview, and quantitative approach with path analysis. The results of the study showed that by designing program based on changes in the mindset and culture set of bureaucratic behavior, namely PDCA (plan, do, check and action), a sociological perspective was very useful in improving and developing management training from the perspective of theory, practical policy, and paradigm change and there was an influence of realization policy variable, orientation variable, and program utilization variable towards action for change.
Design of Automotive Product Seat Lifting Aids in Minimizing MSD Complaints using AHOQ Method (Case Study: Final Line of Automotive Industry Assembly Process) Nelfiyanti Nelfiyanti; Ridhwan Adhitya Ibnimatiin; Annisa Mulia Rani; Wiwik Sudarwati; Anwar Ilmar Ramadhan
Journal of Applied Sciences and Advanced Technology Vol 4, No 1 (2021): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.4.1.25-34

Abstract

Along with the times, every human level and life will be upgraded automatically. Likewise, the company if it does not adjust to the times, it will be difficult to adjust. As with the production process, there will be differences from time to time. From time immemorial, doing work manually, and in the present era using technological tools. Lifting the car seat manually makes the operator complain of pain, due to the high production volume. To eliminate the complaints from these operators, a proposed tool design was made. The method used is Axiomatic House of Quality. In general, Axiomatic Design can help the product development process be more structured with a focus on design that fits the function of the product. The first step in this research is to collect input from customers. Then after getting input from the customer, it is converted into a customer attribute. Then, develop the concept by making several alternatives based on the combination table. Next, determine the design that will be used and carry out testing and coordinate with the user, namely the assembly operator. Finally, determine the specifications and final design of the tool for lifting a seat whose load exceeds the lifting standard. The results of this study are in the form of a design tool for lifting the seat which is expected to reduce complaints of pain to the operator. So that this design design makes the company a consideration for implementation.
Mechanical Properties of Particle board from Empty Palm Fruit with Polyester Resin Adhesive Istianto Budhi Rahardja; Hayya Afifah; Yudi Dermawan; Ery Diniardi; Anwar Ilmar Ramadhan; Januar Parlaungan Siregar
Journal of Applied Sciences and Advanced Technology Vol 4, No 1 (2021): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.4.1.35-42

Abstract

The need for particleboard in Indonesia is increasing every year. Particleboard is usually made of wood that comes from the forest so it has a bad effect and forest products will decrease over time. To overcome this problem, new knowledge is created that can be done. The new knowledge is like utilizing empty palm oil bunches for particle board material to replace wood raw materials. Particleboard is usually made of wood or other lignocellulosic materials such as oil palm empty bunches. The empty fruit bunches that have been made will be mixed with polyester resin as an adhesive. This study examines the effect of the percentage of polyester resin adhesive used, namely 90%, 75% and 60%. The process of making particle board starts with the preparation of raw materials such as palm empty fruit bunches and polyester resin. For empty bunches fiber used is 1 cm long. After the particle board is made, a hardness test is carried out using a durometer with the ASTM D2240 standard.

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