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All Journal Jurnal Teknologi Jurnal Optimasi Sistem Industri INDONESIAN JOURNAL OF APPLIED PHYSICS Conference on Innovation and Application of Science and Technology (CIASTECH) Buana Ilmu Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi 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 Astronomy 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 Physics Social Sciences Transportation

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An Analysis of Spring-back and Spring-go on Variation of V-Dies Bending Angle Using Galvanized SGCC Steel Sheet Khoirudin Khoirudin; Sukarman Sukarman; Siswanto Siswanto; Nana Rahdiana; Ade Suhara
Jurnal Teknik Mesin Mechanical Xplore Vol 3 No 1 (2022): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/jtmmx.v3i1.2753

Abstract

This study discusses the phenomenon of spring-back and spring-go in the bending kinematic shaping process using V-bending dies and SGCC galvanized steel sheet (JIS G 3302) material. During the bending process, the zinc layer on the surface of the galvanized steel must not be damaged. The zinc coating on galvanized sheet steel will affect the material forming process (metal forming process). This study employed an experimental design with four input variables: die opening L (mm), punch angle (punch engel), punch speed (punch speed), and bending force (force bending). The input factors for the experiment are 35 mm opening, 40o punch angle, 30 mm/minute punch speed, and 7500 N bending force. In the die opening setting conditions, the maximum spring-back angle is 35 mm, the punch angle is 40 °, the punch speed is 30 mm/minute, and the bending force is 6500 N. The average minimum and maximum spring-back angles in this condition are 0.71o and 4.08o, respectively. The bending force is 7000 N, the punch angle is 50 °, the punch speed is 40 mm/minute, and the minimum spring-go angle is 30o. In die opening parameters, the maximum spring-go angle achieved is 35o, the punch angle is 60o, the punch speed is 50 mm/minute, and the bending force is 700 N. The average minimum and maximum spring-go angles are 1.90o and 6.23o, respectively.
An Analysis of the Springback Phenomenon of the Material Aluminum Alloy 6063-T5 With Punch Angle Variation Amri Abdulah; Revi Kusnadi; Mohamad Rizkiyanto; Sukarman; Amir Amir; Dibyo Setiawan
Jurnal Teknik Mesin Mechanical Xplore Vol 3 No 1 (2022): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/jtmmx.v3i1.2768

Abstract

Springback is a phenomenon that frequently occurs in bending processes and is detrimental to the manufacturing industry. Typical disadvantages include the incompatibility of the product's final dimensions and the need for additional processing. Indeed, these must also incur additional expenses and result in the inefficient production process flow. Consequently, the analysis of springback is attracted to studies to obtain a bending product that meets expectations. This study examined the springback phenomena on 60 mm x 19 mm x 2 mm aluminium alloy 6063-T5 materials using V-bending processes and approximately 40°, 50°, and 60° punch angles. This study also utilized the die opening and bending force variables, 35 mm and 2500 N, respectively. It was anticipated that these procedures would produce a 6063-T5 aluminium alloy with a bending angle of approximately 90 degrees. The results indicate that the bending angles produced by these processes with the various punch angles are 91.50°, 91.42°, and 91.67°, respectively. It indicates that the excess bending angle was referred to as springback. Consequently, a bending angle of approximately 90° can be obtained on aluminium alloy 6063-T5 using V-bending processes with the set parameters of die opening in 35 mm and bending force in 2500 N, in addition to the punch angle that was reduced based on the known springback value. In addition, it is anticipated that this result will contribute to the development of the manufacturing industry, particularly the aluminium alloy 6063-T5 materials industry, or serve as a reference for other relevant studies
Enhancement Material Removal Rate Optimization of Sinker EDM Process Parameters Using a Rectangular Graphite Electrode Sumanto Sumanto; Acim Maulana; Dodi Mulyadi; Khoirudin Khoirudin; Siswanto Siswanto; Sukarman Sukarman; Ade Suhara; Safril Safril
Jurnal Optimasi Sistem Industri Vol. 21 No. 2 (2022): Published in November 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.
The Effect of V-Bending Parameters Utilizing Electrolytic Zinc-Coated Steel Sheet (SECC) Material 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.
Optimasi Parameter Proses Resistance Spot Welding pada Pengabungan Material SECC-AF Edi Gunawan; Sukarman Sukarman; Apang Djafar Shieddieque; Choirul Anwar; Jatira Jatira
SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan) Vol 1 (2019)
Publisher : SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1202.571 KB)

Abstract

Makalah ini menyajikan ikhtisar optimasi parameter proses resistance spot welding menggunakan logam SECC-AF (JIS G 3313). Material SECC-AF (JIS G 3313) merupakan plat lembaran SPCC (JIS 3141) yang dilapisi zinc dengan ketebalan tertentu sehingga sifat mampu lasnya (weld ability) menurun.  Penelitian ini bertujuan untuk mendapatkan hasil uji tegangan tarik geser tertinggi dari kombinasi parameter resistance spot welding yang ditetapkan. Penelitian ini menggunakan metode Taguchi dengan menggunakan empat variabel dan kombinasi 4-2 tingkat eksperimen. Hasil uji tegangan tarik geser tertinggi sebesar 4,66 kN dan terendah adalah 3,88 kN.
Optimasi Sistem Pendingin Untuk Penggunaan Kembali Ethylene Glycol Amri Abdulah; Sukarman Sukarman; Dede Ardi Rajab
SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan) Vol 1 (2019)
Publisher : SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1135.075 KB)

Abstract

Etilin Glikol (EG) pada proses akhir polikondensasi di industri polimer membutuhkan perawatan dengan cara mendinginkan EG yang ada di tangki penampungan, EG yang telah didinginkan yaitu EG(spray) dapat digunakan kembali untuk cairan semprot di peralatan ejektor yang fungsinya menjaga kestabilan suhu Uap EG pada proses pemvakuman, sistem pendingin EG(spray) saat ini menggunakan Plate Heat Exchanger1(PHE1) dengan cairan dingin yaitu Air yang diberi nama Air(Cooling), sistem pendingin ini memerlukan peningkatan kinerja untuk mendukung penambahan kapasitas produksi, sehingga pada saat kapasitas bertambah kondisi pemvakuman tetap stabil. Metode penyelesaian masalah dalam kasus ini yaitu optimasi sistem pendingin EG(spray)  dengan cara melakukan pendinginan awal terhadap Air(Cooling) menggunakan PHE2,  cairan dingin yang digunakan di PHE 2 menggunakan Air yang di beri nama Air (Chilled) yang mempunyai suhu 7ᵒC sampai 9ᵒC suhu ini lebih rendah dari Air(Cooling)   yaitu sekitar 30ᵒC sampai 35ᵒC, keuntungan menggunakan metode ini yaitu Air (Chilled  didapat dengan memanfaatkan energi terbuang, dasar perhitungan perkiraan suhu masuk dan keluar untuk cairan dingin dan panas di PHE1 dan PHE 2 menggunakan persamaan keseimbangan energi. Hasil akhir dari optimasi sistem pendingin yaitu meningkatnya kinerja PHE1 dengan indikasi suhu keluaran EG(spray) di PHE1 ada penurunan suhu sebesar 5.32ᵒC dari suhu sebelumnya yaitu 38.32ᵒC menjadi 33ᵒC.
Optimasi Parameter Proses Powder Coating pada Plat Electro Galvanized Sukarman Sukarman; Ilmi Ramanda Sitorus; Budi Aribowo; Dede Ardi Rajab; Yadi Heryadi
SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan) Vol 1 (2019)
Publisher : SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (860.365 KB)

Abstract

Makalah ini menyajikan ikhtisar optimasi parameter proses powder coating pada logam electro-galvanized (SECC-AF JIS G 3313). Ketebalan lapisan painting merupakan factor penting yang menentukan dalam proteksi logam terhadap karat. Pada proses powder coating ketebalam merukapan salah satu variable yang sulit dikontrol konsistensinya. Penelitian ini menggunakan material Ral 7016 epoxy polyester dengan ketebalan yang disyaratkan antara 70 -100 micron. Sementara itu, pada proses aplikasi masih ditemukan powder-paint yang lebih tipis dari standar. Penelitian ini bertujuan untuk mendapatkan nilai ketebalan powder coating optimum dari kombinasi parameter proses yang ditetapkan. Eksperimen dilakukan dengan menggunakan array orthogonal L12 Taguchi dengan parameter, program, jarak, metode aplikasi, dan jumlah layer. Metode optimasi ini telah berhasil melakukan perbaikan. Ketebalan rata-rata lapisan paint powder tertinggi mencapai 76,8 micron. Untuk parameter yang diberikan, jarak merupakan parameter yang memberikan dampak tertinggi terhadap ketebalan dengan rasio S/N sebesar 5,114. Hasil ini diharapkan bias digunakan untuk mengembangkan powder coating pada aspek-sapek signifikan lainya.
Tensile shear load in resistance spot welding of dissimilar metals: An optimization study using response surface methodology Sukarman Sukarman; Triyono Triyono; Budi Kristiawan; Amir Amir; Nazar Fazrin; Ade Suhara; Renata Lintang Azizah; Fajar Mucharom
Mechanical Engineering for Society and Industry Vol 3 No 2 (2023)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.9606

Abstract

Resistance spot welding (RSW) is being applied extensively in different industries, specifically the automotive sector. Therefore, this study was conducted to optimize the tensile strength load (TSL) in RSW by investigating the application of dissimilar materials as input parameters. The optimization process involved the combination of different galvanized and non-galvanized steel materials. The production of car bodies using galvanized steel with approximately 13.0 microns thick zinc (Zn) coating was found to be a standard practice, but this zinc layer usually presents challenges due to the poor weldability. This study prepared 27 units of TSL samples using a spot-welding machine and a pressure force system (PFS) for the electrode tip. The aim was to determine the optimal TSL through the exploration of specified RSW parameters. The process focused on using the response surface methodology (RSM) to achieve the desired outcome while the Box-Behnken design was applied to determine the input parameters. The optimal TSL obtained was 5265.15 N by setting the squeeze time to 21.0 cycles at a welding current of 24.5 kA, a welding time of 0.5 s, and a holding time of 15.0 cycles. The highest TSL value recorded was 5937.94 N at 21.0 cycles, 27.0 kA, 0.6 s, and 15.0 cycles respectively. These findings were considered significant to the enhancement of productivity across industries, specifically in the RSW process. However, further study was required to investigate additional response variables such as the changes in hardness and microstructure.
Optimization of S-EDM Process Parameters on Material Removal Rate using Copper Electrodes Khoirudin Khoirudin; Sukarman Sukarman; Nana Rahdiana; Ade Suhara; Ahmad Fauzi
Jurnal POLIMESIN Vol 21, No 1 (2023): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i1.3199

Abstract

This article demonstrates that the sinker electrical discharge machining (S-EDM) method can be enhanced using SPHC (JIS G 3131) materials with a hardened surface. During S-EDM, neither contact nor a cutting force exists between the electrode and the workpiece. S-EDM is advantageous because it eliminates mechanical stress, chatter, and vibration issues with traditional milling. S-EDM is widely employed, for example, in the manufacturing of molds for automotive and aviation components. Taguchi design and signal-to-noise ratio (S/N ratio) were selected to examine the impact of the input parameter model on the material removal rate (MRR). The Taguchi approach assessed three input parameters and three experimental levels. The parameters pulse current (I), spark time (Ton), and gap voltage (Vg) were chosen to evaluate the MRR performance of the S-EDM process with the SPHC-hardened workpiece material. Copper with a diameter of 10 mm is chosen as the electrode material. This study aims to determine the optimal MRR for the chosen input variables. Results indicate that a more effective pulse current value promotes debris removal from the machining zone and stabilizes following spark release, speeding the material removal rate (MRR). In the S-EDM machining process, the pulse current value significantly affects the MRR and is one of the most significant response variables
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.
Co-Authors Acim Maulana Ade Suhara Afif Hakim Ahmad Fauzi Ahmad Hidayat Amin Rais Amir Amir Amir Amir Amri Abdulah Anjar Prasetyo Anwar Ilmar Ramadhan Aries Abbas Bambang Widyanto Budi Aribowo Budi Kristiawan Chepi Reynaldir Choirul Anwar Choirul Anwar Dede Ardi Rajab Dede Ardi Rajab Dicky Dimyati Dodi Mulyadi 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 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 Shieddique, Apang Djafar Siswanto Siswanto Siswanto Sumanto Sumanto Sumanto Suripto, Heri Thiyana Thiyana Tito Chaerul Pratama Tomas Irfani Triyono Triyono Yadi Heryadi Yulfian Aminanda