Articles
<![CDATA[Development of Swept-sine Excitation Control Method to Minimize the FRF Measurement Error ]]>
<![CDATA[Yanto, Asmara]]>;
<![CDATA[Abidin, Zainal]]>
<![CDATA[ Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 3, No 2 (2012) ]]>
Publisher : <![CDATA[Research Centre for Electrical Power and Mechatronics, Indonesian Istitutes of Sciences ]]>
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DOI: 10.14203/j.mev.2012.v3.57-64
<![CDATA[Shaker excitation in FRF (Frequency Response Function) measurement of a testing system can be controlled by using swept-sine signal source in a signal generator and it is called with swept-sine excitation. FRF’s magnitude error of the system which is obtained from the FRF measurement using swept-sine excitation depends on swept function of swept-sine signal. In this paper, swept-sinesignals using linear and S535 swept functions have been simulated to controlling swept-sine excitation in the FRF measurement of SDOF (Single Degree of Freedom) system. Linear swept is swept function of swept-sine signal which is often used in the FRF measurement and S535swept is a swept function has been developed in this paper. Based on simulation results, the FRF’s magnitude error at system’s resonant frequency which was obtained from the FRF measurement using linear swept-sine excitation can be minimized by redoing the FRF measurement using S535 swept-sine excitation.]]>
<![CDATA[Design of Low Subsonic Wind Tunnel with Open Return System for Testing Wind Turbines at Low Airspeeds ]]>
<![CDATA[Yanel, Karnova]]>;
<![CDATA[Yanto, Asmara]]>
<![CDATA[ SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 17, No 2 (2023): SINTEK JURNAL ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Jakarta ]]>
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DOI: 10.24853/sintek.17.2.82-96
<![CDATA[The The Republic of Indonesia is rich in potential for renewable energy, including abundant wind energy. This study aims to design a subsonic open return wind tunnel for testing wind turbines at low airspeeds. The testing focus includes the evaluation of blade efficiency, bearing performance, and other aspects. Testing at low airspeeds (<5 m/s) is highly relevant to the wind conditions in Indonesia. The design process utilizes Computer Aided Design (CAD), while data collection and analysis are conducted through Computer Aided Engineering (CAE) simulations and theoretical calculations. The wind tunnel comprises components such as contraction, honeycomb, test section, diffuser, and support structure. Airflow over the turbine blades can be observed using smoke visualization in the test section. This research is expected to provide practical contributions to the development of low-speed wind turbines in Indonesia.]]>
<![CDATA[Design Development of Coffee Roaster with Quality Function Deployment Method ]]>
<![CDATA[Satria, Fajri Ilham]]>;
<![CDATA[Saferi, Rozi]]>;
<![CDATA[Yanto, Asmara]]>
<![CDATA[ Jurnal Teknik Mesin Vol 14 No 1 (2024): Jurnal Teknik Mesin Vol.14 No.1 April 2024 ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP ]]>
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DOI: 10.21063/jtm.2024.v14.i1.1-7
<![CDATA[This research aims to identify and determine the level of consumer needs regarding the coffee roaster and to compile a House of Quality (HOQ) to determine dominant design needs and priority technical characteristics of the machine. The benefit of this research is to be able to develop the coffee roaster and to maximize machine use and time efficiency in roasting coffee. The research method used is the Quality Function Deployment (QFD) method by conducting field surveys aimed at finding out the level of consumer needs by distributing questionnaires and looking for information about what the need to make it easier to roast coffee beans. The location of this research was carried out in several café or coffee shop in Padang City. Based on the column weight, it was found that the strongest priority in the technical response was the design aspect with a value weighting of 38.64, followed by the material criteria aspect with a value weighting of 66.1, then time and energy efficiency with values weighting of 30.34 and 15 respectively.. The design for developing coffee roaster according to consumer needs lies in a more affordable price which makes the use of materials and sizes of horizontal sangria equipment cheaper compared to conventional coffee roasting equipment.]]>
<![CDATA[The Effect of Firmware Settings on Engraving Results of a CNC Laser Engraver Machine ]]>
<![CDATA[Anrinal, Anrinal]]>;
<![CDATA[Zamhari, Muhammad Apri]]>;
<![CDATA[Yanto, Asmara]]>
<![CDATA[ Jurnal Teknik Mesin Vol 14 No 1 (2024): Jurnal Teknik Mesin Vol.14 No.1 April 2024 ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP ]]>
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DOI: 10.21063/jtm.2024.v14.i1.21-26
<![CDATA[This study aims to determine the effect of setting the firmware on the time and results of the engraving and to analyze the impact of the engraver variable on the CNC Laser Engraving machine. The test results of the cnc laser engraving firmware setting were obtained from several stages of testing the predetermined settings such as the Axis maximum rate and Axis acceleration settings, in order to find the appropriate Axis maximum rate and Axis acceleration settings for the laser engraving process. Tests with the Axis maximum rate setting are carried out with variables 600 mm/min,1200 mm/min,1800 mm/min aiming to find the ideal speed, Tests with Axis acceleration settings are carried out with variables 20 mm/s2, 40 mm/s2, 60mm/s2. aims to find the ideal acceleration by looking at the stability of the results and comparing the test data. axis maximum rate ($110 and $111) 600 mm/min and axis acceleration ($120 and $121) 40 mm/s2, taking into account the engraving time and the resulting clean, non-blur engraving results and the resulting engraving line width. Based on the study, it is recommended for users to be careful in setting the firmware for maximum and clean results. Based on the speed and acceleration test data on the engraving scale, the faster the engraving process, the smaller and blurry the resulting scale (width of the engraving) will be.]]>
<![CDATA[Manufacturing System Design of The 3-RRPaR Parallel Manipulator ]]>
<![CDATA[Anrinal, Anrinal]]>;
<![CDATA[Kurnia Illahi, Redo]]>;
<![CDATA[Yanto, Asmara]]>
<![CDATA[ Jurnal Teknik Mesin Vol 14 No 2 (2024): Jurnal Teknik Mesin Vol.14 No.2 October 2024 ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP ]]>
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<![CDATA[This study aims to design a manufacturing system to produce the 3-RRPaR Parallel Manipulator Robot. The manufacturing system design includes Bill of Material (BOM), Operational Process Chart (OPC), Production Routing and Assembly Routing which will be used to calculate the Production Cost and Determination of the Selling Price. Some important components of the 3-RRPaR parallel manipulator include Box Controller, Actuator, Passive Link, Movable platform, Greeper and Frame. The manufacturing process of the 3-RRPaR parallel manipulator takes 33 working hours with a Production Cost of Rp 11.887.050,-.]]>
<![CDATA[Effect of Aluminium and Copper Powder Addition in Alumina Matrix on Bending Strength ]]>
<![CDATA[Hendriwan Fahmi]]>;
<![CDATA[Yanto, Asmara]]>;
<![CDATA[Sulaeman]]>
<![CDATA[ Jurnal Teknik Mesin Vol 6 No 1 (2016): Jurnal Teknik Mesin Vol.6 No.1 April 2016 ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP ]]>
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DOI: 10.21063/jtm.2016.v6.i1.15-18
<![CDATA[The aim of this research is to find out the influence of the addition of aluminum (Al) and copper (Cu) on matrik alumina (Al2O3) against the forces of bending. Of aluminum made by a process of water and atomization of copper made by the process of atomization centrifugal. Consisting of copper aluminum and continued with a sifting using a measure of 50 - 100 mesh up to get the size of the amounting to 150 - 125 µm. of the measures followed by the process of mixing with the variation of a composition of 100 % of the volume of Al2O3, 90 % of the volume of Al2O3 + 10 % heavy Al and Cu, 80 % of the volume of Al2O3 + 20 % heavy Al and Cu, 70 % of the volume of Al2O3 + 30 % heavy Al and Cu, al2o3 + 60 % of the volume of 40 % heavy Al and Cu. Then will be the process of compacting with pressure 140 MPa. The process of sintering committed using furnace with the temperature 1050 OC by heating rate 5 OC / minute. In this research voltage power bending highest obtained in composition 80 % of the volume of Al2O3 + 20 % heavy Al and Cu to voltage bending average of 6,66MPa.]]>
<![CDATA[Strength Analysis of Betelnut Fiber-Reinforced Resin Composite ]]>
<![CDATA[Hendriwan Fahmi]]>;
<![CDATA[Yanto, Asmara]]>;
<![CDATA[Fajar Marda Kapur]]>
<![CDATA[ Jurnal Teknik Mesin Vol 6 No 2 (2016): Jurnal Teknik Mesin Vol.6 No.2 October 2016 ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP ]]>
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DOI: 10.21063/jtm.2016.v6.i2.87-92
<![CDATA[Material is needed in life, the material itself is used aims to facilitate human activities, in the development of modified human material in various ways, one of which composite materials. Composite is a combination of two or more elements that get combined properties of the elements combined. Liquid Epoxy resin is a low molecular weight organic group containing epoxide. The composite material used is a fiber reinforced resin nut shell. Point of this study is know tensile strength of fiber nut shell composite, variations in the composition of the epoxy resin and fiber nut shell made in this study was 90:10%wt, 80:20%wt, and 70:30%wt, fiber length of 2 cm with random fiber orientation. This experiment is the tensile test. Tensile test was conducted to determine the tensile stress each - each composition, the standard used is ASTM 638 02. From the test results obtained on the composition of the composite tensile strength of 90: 10% wt is 9.8 MPa, the composition of 80: 20% wt was 13.06 MPa and the composition of 70: 30% wt is 14.04 MPa. Of the fracture surface can be seen that the fibers are well distributed and the bond between resin and fiber is also more evenly so that the tensile strength increased.]]>
<![CDATA[Performance Evaluation of 3-RRPaR Parallel Manipulator in Pick and place Operation ]]>
<![CDATA[Anrinal, Anrinal]]>;
<![CDATA[Randa, Randa]]>;
<![CDATA[Yanto, Asmara]]>
<![CDATA[ Jurnal Teknik Mesin Vol 15 No 1 (2025): Jurnal Teknik Mesin Vol.15 No.1 April 2025 ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP ]]>
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DOI: 10.21063/jtm.2025.v15.i1.1-7
<![CDATA[This study evaluates the performance of a 3-RRPaR parallel manipulator designed to perform pick-and-place operations. The manipulator consists of three actuators driven by stepper motors, which are controlled through a G-code interface using Universal G-Code Sende.. Motion commands are input via a computer, enabling the robot to follow predefined trajectories. During testing, the manipulator was programmed to move within a circular workspace with a radius of 100 mm on the X and Y axes. The actual movement reached only 98 mm, resulting in a positioning error of approximately 2 mm. The observed inaccuracies are primarily attributed to structural inconsistencies between the upper and lower frames, unequal lengths of the passive links, and the use of a non-permanent clutch mechanism. These findings highlight the importance of mechanical precision and structural symmetry in enhancing the accuracy of parallel manipulator systems.]]>
<![CDATA[Design and Structural Performance Evaluation of a CNC Plasma Cutting Machine Frame ]]>
<![CDATA[Pratama, Aga]]>;
<![CDATA[Anrinal, Anrinal]]>;
<![CDATA[Pratiwi, Putri]]>;
<![CDATA[Yanto, Asmara]]>
<![CDATA[ Jurnal Teknik Mesin Vol 15 No 1 (2025): Jurnal Teknik Mesin Vol.15 No.1 April 2025 ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP ]]>
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DOI: 10.21063/jtm.2025.v15.i1.8-14
<![CDATA[Plasma cutting is a widely used process for cutting metal plates using a high-temperature electric arc. Conventional systems are manually operated, which limits cutting precision and efficiency. To address this, a CNC plasma cutting machine was designed with a focus on structural reliability. The machine frame was designed to support automated motion along X, Y, and Z axes, enabling precise plasma head movement. The overall machine dimensions are 3000 mm × 1500 mm × 1000 mm, with a work area of 2400 mm × 1200 mm. Structural components were modeled using CAD software and analyzed using the Finite Element Method (FEM) to evaluate deformation, stress distribution, and safety factors. The structural analysis revealed maximum displacements of 4.14 µm and 3.83 µm in the X and Y units, respectively. The highest von Mises stress was found to be 56.57 MPa on the X unit and 50.19 MPa on the Y unit. The minimum safety factors were 4.41 for the X unit and 2.36 for the Y unit, indicating a safe and robust structural design. The results confirm that the designed machine frame meets mechanical integrity requirements for automated plasma cutting operations. The low deformation and acceptable stress levels ensure cutting accuracy and operational reliability. This design may serve as a foundation for future improvements or implementation in manufacturing environments.]]>
<![CDATA[The Effect of Laser Setting on Engraving Results of A CNC Laser Engraver Machine ]]>
<![CDATA[Anrinal, Anrinal]]>;
<![CDATA[Pratama, Farza Anugrah]]>;
<![CDATA[Yanto, Asmara]]>
<![CDATA[ Jurnal Teknik Mesin Vol 13 No 2 (2023): Jurnal Teknik Mesin Vol.13 No.2 October 2023 ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP ]]>
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DOI: 10.21063/jtm.2023.v13.i2.37-41
<![CDATA[This research aims to determine the effect of laser settings on the engraving results of a CNC Laser Engraving machine on plywood media. Controlling the movement of the CNC laser machine spindle using Arduino UNO. Testing was carried out by setting the laser power (S-Max) scales are 100, 200, 300, 400, 500 and 600. Position variations of laser head above the plywood media are 3 cm, 5 cm and 7 cm. The test results show that low S-Max scale will produce unclear dotted lines if graving the circle shape and the greater S-Max scale, the thicker the line will be. The lower position of the laser head above the surface of the plywood media, the wider the graving size (engraving line width). The best engraving results were obtained with S-Max scale is 400 and position of laser head above the plywood media is 5 cm with fairly stable and clear engraving lines.]]>
