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All Journal JMPM (Jurnal Material dan Proses Manufaktur) Jurnal Ilmiah Universitas Batanghari Jambi Jurnal Serambi Engineering Infotekmesin Scientific Journal of Mechanical Engineering Kinematika G-Tech : Jurnal Teknologi Terapan Jurnal Optimasi Teknik Industri (JOTI) Indonesian Journal of Industrial Engineering & Management Jurnal Teknologi dan Manajemen Journal of Mechanical Engineering, Science, and Innovation Journal of Community Services in Sustainability Journal Serambi Engineering (JSE) Majalah Teknik Mesin J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin
Solih, Edwin Sahrial
Politeknik STMI Jakarta
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Rancang Bangun Jig Welding Modifikasi Pneumatic Clamp Untuk Pengelasan Rear Tube Sepeda Motor Listrik Putri Purbaningrum, Sanurya; Sahrial Solih , Edwin; Kurnia Mahasih Lianny , Indah; Awaludin, Sarip; Sidiq , Dirham
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2667

Abstract

Welding of electric motorcycle rear tube frames at PT Ganding Toolsindo still uses manual clamp welding jigs, which cause problems with long part setup times and less precise weld joints. This study aims to design a more efficient welding jig, which can increase productivity and welding quality by modifying the pneumatic clamp on the welding jig used. The research methods used include literature studies, field observations, data analysis and collection, welding jig design with pneumatic clamps, manufacturing, and testing of welding jigs. Welding with manual clamp welding jigs requires a part setup time of 40 seconds. While the part setup in welding with pneumatic clamp modified welding jigs is 19 seconds. The reduction in part setup time by using pneumatic clamp modified welding jigs is 21 seconds or 52%. These results prove that the use of pneumatic clamp modified welding jigs can increase welding efficiency and produce more precise weld joints.
Design Improvement of Mold Bracket for Quarter Trim to Reduce Ejector Mark Defects Agustin, Desy; Ma’ruf, Muhammad Irvan Tantyagus; Solih, Edwin Sahrial; Nurhadi, Fadhil Fadhlurrohman; Sumasto, Fredy
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 9 No. 1 (2025): June
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v9i1.24939

Abstract

This study focuses on improving the quarter trim bracket mold in the mold making division to mitigate the risk of ejector marks, which were identified through long-term analysis. The author redesigned the mold by considering the ejector layout, cooling layout, clamping force calculations, and number of pressure plates, to ensure the product is free from defects. The addition of an ejector pin in the rib area is proposed as a solution to minimize this problem. The quarter trim bracket mold is designed using two pressure plates measuring 30 x 60 mm and four measuring 30 x 80 mm, with a total pressure plate area reaching 13,200 mm². Based on calculations, this part requires a clamping force of 14.5 tons to be produced on a 30 ton capacity injection machine. This clamping force is important to keep the mold tightly closed during the production process, and is calculated based on the cavity pressure in the mold and the shot area. All mold designs are created following company standards to ensure accuracy of sizes and calculations. This research is expected to improve production quality and operational efficiency.
OPTIMASI DESAIN MOLD COVER TOWING FRONT BUMPER MELALUI SIMULASI MOLDFLOW UNTUK MENGURANGI CACAT PRODUK Abdul Wahid Arohman; Andi Muhammad Hanif Tjoppo; Edwin Sahrial Solih; Sanurya Putri Purbaningrum; Desy Agustin; Fredy Sumasto
Scientific Journal of Mechanical Engineering Kinematika Vol 10 No 1 (2025): SJME Kinematika Juni 2025
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v10i1.725

Abstract

Plastic injection molding is a method of forming a product that uses plastic (Polymer) as the main material. The resulting product must have as few defects as possible because it will reduce the quality value and customer satisfaction. In this study, the mold was made for the Front towing bumper cover product with the design and simulation stages. The simulation process uses Moldflow Software to identify possible product defects that occur with variations in melt temperature of 200, 240, and 280 (°C). The result obtained in this simulation is the optimal melt temperature for producing products in the injection molding process by selecting a temperature of 240°C. This temperature is the most optimal because it has faster fill time and cooling time, with an optimum percentage of 25% compared to the temperatures of 200 and 280 (°C). In potential defects such as air traps, weldlines, and shinkmarks, a temperature of 240 (°C) has fewer potential defects than 200 and 280 (°C).
EVALUASI DESAIN RANCANG BANGUN PUNCH DAN DIE MENGGUNAKAN SIMULASI STATIK SEBAGAI QUALITY CONFIRMATION Edwin Sahrial Solih; Ahmad Arif; Sanurya Putri Purbaningrum; Desy Agustin; Abdul Wahid Arohman; Fadhil Fadhlurrohman Nurhadi; Fredy Sumasto
Scientific Journal of Mechanical Engineering Kinematika Vol 10 No 1 (2025): SJME Kinematika Juni 2025
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v10i1.727

Abstract

Modern manufacturing industries demand high efficiency and consistent product quality, especially in metal forming processes such as stamping dies. An accurate punch and die design essential to ensure the success of bending operations, particularly for metal-based products like forks. This study aims to evaluate the structural reliability of punch and die designs through a static simulation approach as a quality confirmation method prior to manufacturing. The methodology includes die geometry design, selection of SKD11 tool steel based on its mechanical properties, and stress analysis using SolidWorks software under a static load of 35 tons. The stress distribution was analyzed using the Von Mises method, and the Factor of Safety (FOS) was calculated as a design safety indicator. Simulation results show that the maximum stress on the die was 9.91 × 10⁷ N/m² and on the punch was 1.01 × 10⁸ N/m², both well below the yield strength of SKD11 (6.88 × 10⁸ N/m²). The FOS values of 3.47 for the die and 3.26 for the punch confirm structural safety. Validation through trial dies and 3D scanner measurements indicated dimensional deviations within the acceptable tolerance range. This approach effective for improving design accuracy and production efficiency in stamping die manufacturing.
Effect of SiO₂ Nanoparticle Dispersion on The Stability and Thermal Conductivity of Polyvinyl Ether-Based Nanolubricant Safril, Safril; Solih, Edwin Sahrial; Gurning, Ridho Hans; Shalihah, Adinda Rahmah; Arohman, Abdul Wahid
G-Tech: Jurnal Teknologi Terapan Vol 10 No 1 (2026): G-Tech, Vol. 10 No. 1 January 2026
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v10i1.8987

Abstract

Heat transfer efficiency in lubrication systems can be achieved by utilising nanolubricants by dispersing nanoparticle additives into pure lubricants to increase nanolubricant stability and thermal conductivity. This study aims to investigate the effect of silicon dioxide (SiO₂) nanoparticle dispersion in polyvinyl ether (PVE)-based lubricants on the stability and thermal conductivity characteristics of nanolubricants. SiO₂/PVE nanolubricant was prepared using a two-step method with a volume concentration of 0.007%. Stability evaluation was carried out through UV–Vis spectrophotometry testing over a period of 30 days. Thermal conductivity was measured using KD2-Pro at a temperature range of 30 ℃ to 80 ℃. The results of the study showed that SiO₂/PVE was declared stable after 144 hours with an absorbance of 80%. Thermal conductivity characteristics decreased with increasing temperature, and the nanolubricant increased compared to PVE lubricants. The maximum increase in thermal conductivity was 2.72% compared to the pure lubricant, and at a test temperature of 30 °C, SiO₂/PVE was compared to SiO₂/corn oil, SiO₂/paraffin oil, SiO₂/sunflower SiO₂/oil, and SiO₂/soybean oil; the results showed an increase in thermal conductivity of 66.69%, 80.63%, 67.70%, and 46.45%, respectively. The thermal conductivity behaviour tends to increase when SiO₂ nanoparticles are dispersed into the pure lubricant, compared to the pure PVE lubricant and previous studies. These findings indicate that SiO₂/PVE nanolubricant produces a significant increase in thermal conductivity, resulting in accelerated heat transfer, reduced friction and wear, and ultimately leading to increased energy efficiency and improved overall system performance.
Co-Authors Abdul Wahid Arohman Adhitya Nugraha Duwan Putra Adrian Januar Wahab Ahmad Arif Ahmad Rifai Al Fatir, Aditya Andi Muhammad Hanif Tjoppo Arif Muttaqin Awaludin, Sarip Azzahra, Sabrina Desy Agustin Dewi Auditiya Marizka Dianasanti Salati Fadhil Fadhlurrohman Nurhadi Fadlurrohman Nurhadi, Fadhil Hakim , Ali Rachman Hasan Sudrajat Hendi Lilih Wijayanto Ibnu Syihab Imansuri, Febriza Indah Kurnia Mahasih Lianny Irma Agustiningsih Imdam johannes johannes Johannnes Ma’ruf, Muhammad Irvan Tantyagus Muhamad Agus Muhammad Riezqi Ibrahim Muhammad Ryas Anugrah Sahnun Mustofa Mustofa Nurhadi, Fadhil Fadhlurrohman Nurhadi, Hikari Qurrata'ain Paramita, Astriyani Sandya Putri, Sanurya Rangkuti, Indra Yusuf Ridho Ridho Hans Gurning Ridho Hans Gurning Rizki Kurniawan Safril Safril Samudra, Bayu Sanurya Putri Purbaningrum Satiman , Bayu Satiman, Bayu Satria, Adam Satriatama, Adrian Shalihah, Adinda Rahmah Sidiq , Dirham Sumasto, Fredy Suroso, Finna Syaeful, Muhamad Eryl Saputra Vebriyanti Hayoto Yudhistira, Hilmi