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All Journal MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Jurnal Teknik Industri Terintegrasi (JUTIN) Jurnal Surya Teknika AEEJ : Journal of Automotive Engineering and Vocational Education Jurnal Vokasi Mekanika Journal of Scientech Research and Development Journal of Community Service Jurnal Teknik, Komputer, Agroteknologi dan Sains Innovative: Journal Of Social Science Research TOFEDU: The Future of Education Journal
Risal Abu
Program Studi Teknik Mesin, Fakultas Teknik Dan Perencanaan, Universitas Ekasakti
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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Analisis Perbandingan Sifat Mekanik Sambungan Kampuh V Terhadap Kampuh U Hasil Pengelasan SMAW Menggunakan Posisi 3G pada Baja St 37 Maulana, Rizky; Afdal, Afdal; Abu , Risal; Mukhnizar, Mukhnizar; Selviyanty, Veny
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 7 No. 1 (2024): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v7i1.25625

Abstract

Selection of the type of support that is appropriate to the load will affect the mechanical and physical properties. Using a good type of support and in accordance with welding procedures can have an influence on the welding results (weldability properties). The comparison of the mechanical properties of V-joints to U-joints is that the maximum tensile stress value between V-joints and U-joints is a maximum of 477.17 N/mm2, while the maximum tensile stress value of V-joints is 453.12 N/mm2. The strain value between the V seam connection and the U seam connection is 20%, while the strain value for the V seam connection is 30%. The yield stress value between the V seam joint and the U seam joint is found in the U seam joint with a yield stress value of 356.05 N/mm2, while the yield stress value for the V seam joint is 337.6 N/mm2. The modulus of elasticity value between the V seam connection and the U seam connection is 2,518.09 N/mm2, while the modulus of elasticity value for the V seam connection is 1,529.43 N/mm2.
Pembuatan Alat Uji Putaran Kritis Poros Jufrizal, Ryan; Mukhnizar, Mukhnizar; Afdal , Afdal; Abu , Risal; Zulkarnain , Zulkarnain
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 4 (2023): Oktober
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i4.26059

Abstract

This critical shaft rotation test tool is used to calculate the maximum deflection of a steel shaft. Currently, the critical shaft rotation test tool still uses human power to operate it, namely by rotating the handle to read the rotation value. So the test results carried out are not effective and accurate. This tool uses an electric motor with ¼ HP power and 2800 Rpm rotation as the driving force. So that the results are more accurate, this tool is designed to use an electronic system (sensor) equipped with a digital counter. Making this critical rotation test tool for the shaft goes through several processes, namely, making a table or position of the critical rotation test tool for the shaft using a digital counter, selecting the disk (load), selecting the bearing (pillow block), selecting the electric motor, selecting the shaft, and selecting the voltage regulator. . The testing phase has undergone several testing stages and the results are as planned. The tool that has been made can be operated effectively and obtain results as planned, and its operation is very easy.
Analysis of the Effect of the Cooling System Modification on the Engine Performance of the Wuling Confero Khairi, Ullul; Abu, Risal; Mukhnizar, Mukhnizar
The Future of Education Journal Vol 4 No 8 (2025): #2
Publisher : Lembaga Penerbitan dan Publikasi Ilmiah Yayasan Pendidikan Tumpuan Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61445/tofedu.v4i8.1149

Abstract

This study aims to analyze the effect of cooling system modification on the engine performance of the Wuling Confero vehicle. The main focus of this research is to evaluate the impact of thermostat removal and the use of plain water as a substitute for radiator coolant on engine operating temperature, engine speed (RPM), and fuel consumption. The research method used was a quantitative experimental approach, with direct testing using a Vehicle Diagnostic System (VDS) to obtain real-time data on operating temperature, RPM, and fuel consumption. The tests were conducted under three different conditions: the factory-standard cooling system (using a thermostat and coolant), the system without a thermostat, and the system using plain water. The results show that the factory-standard cooling system produced the most stable engine performance, with an optimal operating temperature of 80–92°C, stable RPM at around 750 ± 5, and the lowest fuel consumption of 3.8 ml/min. In contrast, the removal of the thermostat resulted in high temperature fluctuations (±6–8°C), unstable engine speed reaching up to 825 RPM, and the highest fuel consumption at 5.2 ml/min. Meanwhile, the use of plain water showed no statistically significant difference but caused moderate temperature fluctuations (±4.3°C) and a higher risk of long-term corrosion. The Wilcoxon statistical test indicated significant differences between the standard and thermostat-removed systems (Z = −2.81; p < 0.05), as well as between the thermostat-removed and plain-water systems (Z = −2.14; p < 0.05). Cooling system modification particularly by removing the thermostat has a negative impact on temperature stability and engine thermal efficiency. The factory-standard cooling system remains the most efficient configuration and is strongly recommended to maintain optimal performance, fuel efficiency, and engine durability.
Analysis of the Tempering Process Results with Temperature Variations on the Mechanical Properties of AISI 4340 Material Hardness Giano, Jordy; Abu, Risal; Mukhnizar, Mukhnizar
The Future of Education Journal Vol 4 No 8 (2025): #2
Publisher : Lembaga Penerbitan dan Publikasi Ilmiah Yayasan Pendidikan Tumpuan Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61445/tofedu.v4i8.1182

Abstract

This study aims to determine the effect of tempering temperature variations on the hardness of AISI 4340 steel after undergoing a quenching process. AISI 4340 is a high-strength low-alloy steel widely used in manufacturing industries, making the control of its mechanical properties through heat treatment crucial. In this study, the steel specimens were initially heated to 800°C and rapidly cooled (quenched) in water. Subsequently, the specimens were subjected to tempering at three different temperatures—200°C, 400°C, and 600°C—with a holding time of 60 minutes. The mechanical properties were evaluated using the Rockwell hardness test (HRC scale) with three measurement points on each specimen. The results indicate that variations in tempering temperature significantly affect the hardness of the steel. Tempering at 200°C produced the highest hardness value of 22.00 HRC due to the presence of tempered martensite with fine carbide precipitation. At 400°C, the hardness decreased to 15.90 HRC, attributed to the transformation of martensite into ferrite and fine cementite (troostite). Meanwhile, tempering at 600°C resulted in a hardness value of 17.80 HRC, characterized by a more stable and ductile sorbite structure. Overall, the findings show that increasing tempering temperature generally decreases hardness while enhancing the ductility of AISI 4340 steel.
Co-Authors Adami, Mukhlis Ade Setia Wati Adi Candra, Adi Afdal Afdal Afdal Afdal , Afdal Afdal Afdal, Afdal Ahmadi, Syukri Algusra, Jeri Amsal, Amsal Antonnius, Antonnius Azmil Azman Danyl Mallisza Dewirman Prima Putra Didik Agung Nugroho Eka Satrya Fadlan, Muhammad Fauzan Rinaldi Fauzan, Idham Giano, Jordy Gowasa, Estomi Hasri Devin Hihamsyah, Diva Puperta Irpandi, Wahyu Jufrizal, Ryan Jusmita Weriza Khairi, Ullul Koto, Rahmat Desman M. Iqbal Maharani Syabila JR Mairizal, Yon Muhammad Abdillah Muhammad Afdil Muhammad Rafly Ramadhan Mukhnizar Mukhnizar , Mukhnizar Mukhnizar Mukhnizar Muknizar Muknizar, Muknizar Novis, Iskan Pratama, Bagas Adi Pratama, Hardian Putra, Afrionaldi Rahman, Hidayatur Retno Aprilla Hardi Rizky Maulana, Rizky Robi Arianto Veny Selviyanti Veny Selviyanty Viola Aysiah Widi, Widi Zega, Toniman Zulkarnain Zulkarnain Zulkarnain , Zulkarnain Zulkarnain Zulkarnain