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All Journal Jurnal Teknologi Jurnal Optimasi Sistem Industri Conference on Innovation and Application of Science and Technology (CIASTECH) Buana Ilmu Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Scientific Journal of Mechanical Engineering Kinematika Journal of Applied Sciences and Advanced Technology Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Teknik Mesin Mechanical Xplore Jurnal Akademika Kimia Borobudur Engineering Review SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan) Jurnal Polimesin Jurnal Akademika Kimia
Sukarman Sukarman
Program Studi Teknik Mesin, Fakultas Teknik Dan Ilmu Komputer, Universitas Buana Perjuangan Karawang, Karawang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Analysis Redox Reaction on Zinc-Coating Thickness Test in Metal Processing Industry of Small and Medium Enterprises Gatot Triyanto; Ricky R. Saputro; Chepi Reynaldir; Khoirudin Khoirudin; Sukarman Sukarman
Jurnal Akademika Kimia Vol. 11 No. 1 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i1.pp19-25

Abstract

This study discusses the implementation of redox reactions on the thickness test of the galvanized (zinc-coated) layer using the JIS-H-0401 standard to help Small and Medium Enterprises (SMEs) industries. Some of the finished products go through the galvanizing process in the metal processing industry. Quality constraints, especially related to the thickness of the galvanic (zinc-coated) layer, have become an object that is less controlled because of the limitations of the test equipment used. This research uses an experimental method applied to one of its products: a flat washer with SPCC material and a thickness of about 2.20 mm. SPCC - SD material is classified as low carbon steel based on its carbon content. 5-unit flat washers were identified with sample codes A, B, C, D, and E. Flat washers have an internal diameter of 22.65 - 22.7 mm. In comparison, the outer diameter is between 43.75 - 43.80. The redox reaction process uses HCl (hydrochloric acid) with a concentration of 1 M, which is diluted with water (H2O). The zinc thickness test results show that the flat washer has an average thickness of 10.52 microns with a minimum and maximum thickness variation of 10.66 -10.72 microns.
Enhancement Material Removal Rate Optimization of Sinker EDM Process Parameters Using a Rectangular Graphite Electrode Sukarman; Sumanto; Acim Maulana; Dodi Mulyadi; Khoirudin; Siswanto; Ade Suhara; Safril
Jurnal Optimasi Sistem Industri Vol. 21 No. 2 (2022): Published in October 2022
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v21.n2.p87-96.2022

Abstract

This article discusses the optimization of sinker electrical discharge machining (sinker EDM) processes using SPHC material that has been hardened. The sinker EDM method is widely employed, for example, in the production of moulds, dies, and automotive and aeronautical components. There is neither contact nor a cutting force between the electrode and the work material in sinker EDM. The disadvantage of the sinker EDM is its low material removal rate. This work aims to optimize the material removal rate (MRR) using graphene electrodes in a rectangular configuration. The SPHC material was selected to determine the optimum MRR model of the sinker EDM input parameter. The Taguchi experimental design was chosen. The Taguchi technique used three input parameters and three experimental levels. Pulse current (I), spark on time (Ton), and gap voltage were among the input parameters (Vg). The graphite rectangle was chosen as an electrode material. The input parameter effect was evaluated by S/N ratio analysis. The result showed that pulse current has the most significant impact on material removal rate in the initial study, followed by spark on time and gap voltage. All input parameters are directly proportional to the MRR. For optimal material removal rate, the third level of pulse current, spark on time, and gap voltage must be maintained. In addition, the proposed Taguchi optimization model could be applied to an existing workshop floor as a simple and practical electronic tool for predicting wear and future research.
OPTIMASI PARAMETER MESIN ULTRASONIC WELDING UNTUK PENYAMBUNGAN MATERIAL TERMOPLASTIK Dodi Mulyadi; Sukarman Sukarman; Amir Amir; Bella Sofiyanti; Azis Adhi Nugroho
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 1 (2024): SJME Kinematika Juni 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i1.296

Abstract

Ultrasonic welding is the joining of materials using of heat generated from high frequency mechanical movements. Known as an efficient process in many applications, such as in textile, packaging and automotive industries. One of the materials that can be joined using ultrasonic welding is thermoplastic material because there is no polymer degradation found in the product after the welding process. In most practices, parameters determining for ultrasonic welding machines uses a trial and error method, several parameters are determined to vary, such as welding pressure, welding time, holding time, drop speed and trigger pressure. To determine the correct variation of values, the Taguchi method is the right choice, determining the variable matrix is ​​very easy, commonly used, and many studies have proven that the Taguchi method is reliable. In this research, the product to be studied is a medical device, which uses thermoplastic polymer as its material. This research has produced the best variable variation of ultrasonic welding machine parameters: welding pressure of 20.00 psi; welding time of 0.21 seconds; holding time of 0.16 seconds; horn descent speed of 3.00 seconds; and trigger pressure of 4.00 psi. The defective products on appearance had reduced to 0.07% from the previous 1.08%.
The Effect of V-Bending Parameters Utilizing Electrolytic Zinc-Coated Steel Sheet (SECC) Material: Pengaruh Variasi V-Dies Bending Angle pada Material Electrolytic zinc-coated Steel Sheet (SECC) Dodi Mulyadi; Khoirudin; Sukarman; Mohamad Rizkiyanto; Nana Rahdiana; Ade Suhara; Ahmad Fauzi; Sumanto
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 5 Nomor 1 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i1.3937

Abstract

This study discusses the phenomenon of spring-back and spring-go in the bending kinematic forming using V-bending dies process and Electrolytic zinc-coated steel sheet (SECC/JIS G 3313) material. The zinc layer on the galvanized steel surface should not be damaged during the material forming process. The zinc layer on the galvanized steel sheet will affect the metal forming process. This study uses an experimental design with four input parameters, namely v-die opening L (mm), punch angle (degree), punch speed (mm/minutes), and bending force (kN). The smallest spring-back was obtained in the 4th test sample: the v-die opening of 35 mm, the punch angle of 40o, the punch speed of 30 mm/minute, and the bending force of 7.50 kN. The minor spring-back degree was 1.67o. Meanwhile, the smallest spring-go obtained in the second sample, namely the v-die opening of 30 mm, the punch angle of 50o, the punch speed of 40 mm/minute, and the bending force of 7.00 kN, the minor spring-go degree of 0.92o was obtained. These results show that the best spring-back degree for SECC/JIS G 3313 material is obtained when the bending process is performed with the v-die bending parameter of 30 mm, punch angle of 50o, punch speed of 40 mm/minute, and bending force of 7.00 kN.
The Qualitative Stability and Thermal Properties Investigation of TiO2-EG/W Nanofluids Through Experimental Validation Muhamad Taufik Ulhakim; Sukarman; Khoirudin; Nazar Fazrin; Tomas Irfani; Amri Abdulah
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 6 Nomor 1 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i1.5882

Abstract

Over the past two decades, researchers have been extremely interested in developing TiO2 nanofluids for heat exchanger applications. Therefore, this study evaluates the performance of employing TiO2 nanofluids, which were prepared using ethylene glycol (EG) and distilled water as the base fluid, then called TiO2-EG/W. The qualitative stability and thermal conductivity properties were measured through the experimental investigation. XRD and SEM analyses were also carried out to investigate the structures of TiO2 nanoparticles used in terms of their crystalline and morphological structures. The results showed a positive impact of stability even for 15 days, and after that, the nanoparticles dropped to the sedimentation by about 58%. Then, the highest thermal conductivity at the temperature of 80 °C was increased by about 17.08% compared to the base fluid. Supported by the results of XRD and SEM analysis, respectively, highlight that TiO2 nanoparticles have a rutile phase with an average crystallite size of 20.23 nm and are small spherical in morphology. This paper also provided the challenge and future perspective of TiO2 nanofluid to appear as an innovation for the development of TiO2 nanofluid in the further studies of heat exchanger applications.
Taguchi Design of Experiment (DoE) for Evaluating TIG-welding Parameter Variations on Tensile-shear Load and Hardness Using Stainless Steel 304 Material Siswanto; Sukarman; Dodi Muyladi; Amir; Amri Abdulah; Ean Deka Putra
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Volume 6 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i2.6569

Abstract

This article delves into the intricacies of optimizing the TIG welding process using stainless steel 304 (SUS 304) material, with particular emphasis on small-scale industries that are heavily reliant on TIG welding, especially in the production of household equipment and fences. The objective of this research is to enhance the tensile shear load (T's load) through the Taguchi Design of Experiment (DoE), which takes into account welding current, gas flow rate, and electrode diameter as primary parameters. This study evaluates T's load and hardness across the welding zone, which includes the heat-affected zone (HAZ) and base metal. The study was conducted using a Stahlweld inverter welding machine operating at 220 V/50 Hz, and a maximum T's load of 1545.1 kgf was achieved in the fourth iteration. The optimization of T's load was carried out using SN ratio analysis and involved setting the welding current to level II, gas flow rate to level I, and electrode diameter to level II following the Taguchi DoE design. The hardness peaks in the weld area decreased in the HAZ and reached their lowest point in the base metal. These findings provide valuable insights into optimizing TIG welding parameters for thin stainless steel 304 materials, which supports Sustainable Development Goal 9 (industry, innovation, and infrastructure).
Co-Authors Acim Maulana Ade Suhara Ahmad Fauzi Ahmad Hidayat Amin Rais Amir Amir Amir Amir Amir Amri Abdulah Anjar Prasetyo Anwar Ilmar Ramadhan Aries Abbas Azis Adhi Nugroho Bambang Widyanto Bella Sofiyanti Budi Aribowo Budi Kristiawan Chepi Reynaldir Choirul Anwar Choirul Anwar Dede Ardi Rajab Dede Ardi Rajab Dicky Dimyati Dodi Mulyadi Dodi Muyladi Ean Deka Putra Edi Gunawan Fajar Mucharom Fathan Mubina Dewadi Gatot Triyanto Ilmi Ramanda Sitorus Istianto Budhi Rahardja Jatira Jatira Karyadi Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Mardiyati, Mardiyati Mohamad Rizkiyanto Muhamad Taufik Ulhakim Muhammad Arif Rahman Muhammad Ihsan Fadlilah Murtalim Murtalim Murtalim Murtalim Murtalim Nana Rahdiana Nana Rahdiana Nana Rahdiana Nazar Fazrin Nazar Fazrin Renata Lintang Azizah Revi Kusnadi Ricko Valderama Ricky R. Saputro Rohman Rohman Safril Safril setiawan, Dibyo Shieddieque, Apang Djafar Siswanto Siswanto Siswanto Sumanto Sumanto Sumanto Suripto, Heri Thiyana Thiyana Tito Chaerul Pratama Tomas Irfani Triyono Triyono Yadi Heryadi Yulfian Aminanda