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Sukarman Sukarman
Balai Tanaman Rempah dan Obat Jl. Tentara Pelajar No. 3 Bogor 16111
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Journal : Jurnal Polimesin

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A framework for surface profile optimization in sinker-edm via response surface methodology Rohman, Rohman; Sukarman, Sukarman; Ulhakim, Muhamad Taufik; Supriyanto, Danang
Jurnal Polimesin Vol 23, No 1 (2025): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i1.5741

Abstract

Sinker Electrical Discharge Machining (SEDM) is a powerful technique used for shaping hard materials and creating complex designs. SEDM effectively machines hardened steel, titanium, and tungsten carbide, materials challenging for conventional methods. This study aims to identify the optimal surface profile (Ra) as a response variable in the SEDM process. This study utilized hardened SKD11 as the workpiece and graphite as the electrode, employing Response Surface Methodology (RSM) for optimization. The investigation focused on the pulse current, spark-on time, and gap voltage as the input parameters. The findings revealed that Sample 7 achieved the smoothest surface (at Ra = 10 µm), while Sample 13 had the roughest (at Ra = 20 µm). The analysis of these results determined the ideal conditions for the pulse current at level 1, spark-on time at level 3, and gap voltage at level 3, resulting in a surface profile of 10.2 microns. The successful application of RSM optimization in SEDM significantly contributes to the precision machining of alloy steels, which plays a crucial role in material-processing operations.
Enhancing TIG Welding Parameters For Direct Tensile Load (DT-load) On Various Steel Thicknesses Amar, Amar; Sukarman, Sukarman; Khoirudin, Khoirudin; Mulyadi, Dodi; Basit, Arul; Suhara, Ade; Shieddieque, Apang Djafar; Cahyo, Tegar Dwi
Jurnal Polimesin Vol 22, No 1 (2024): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i1.4892

Abstract

The car body repair process is integral to vehicle development and structural repair. The primary objective of this study is to enhance the quality of thin material welding utilized in automobile body repair. The impetus for this research stems from the necessity to improve the structural integrity and longevity of thin materials prone to deformation throughout the welding procedure while minimizing distortion. This study aims to identify optimal parameters for the tungsten inert gas welding (TIG welding) process on thin materials, particularly for automobile body rearrangement. The Taguchi method conducted the experimental analysis of variations in welding parameters, including electrode diameter, gas flow rate, and welding current. Adjusting TIG welding parameters to their optimal values significantly improves weld joint direct tensile load (DT-load) and overall structural quality, according to the findings of this study. ANOVA analysis and the S-N ratio indicate that gas flow rate and welding current are significant determinants of the quality of welded joints in thin materials. This research contributes to a better understanding of the optimal parameters for fusing thin materials, particularly in automobile body repair. The automotive industry can use these findings as a guide to enhance the quality and strength of welding processes, which are critical to the structural integrity of vehicles.
Optimization of TIG welding parameters for tensile load testing on dissimilar material joints of galvanized steel (SGCC) and low carbon steel (SPCC-SD) Basit, Arul; khoirudin, khoirudin; Sukarman, Sukarman; Cahyo, Tegar Dwi; Hidayat, Syahrul Taufik; Saputra, Ridhwan Shalahuddin; Ramadan, Trisa; Rahdiana, Nana
Jurnal Polimesin Vol 22, No 4 (2024): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i4.5025

Abstract

Tungsten Inert Gas (TIG) welding uses a tungsten electrode and argon or helium gas for shielding. It offers excellent shielding, stable arc, adjustable heat input, minimal spattering, and attractive welds. Widely used in various industries, especially for thin materials like galvanized sheets, TIG welding can be challenging for dissimilar materials like galvanized steel and low-carbon steel due to their different melting points. Studying optimal welding parameters is crucial for success. This research focuses on TIG welding of SPCC-SD (JIS 3141) and SGCC (JIS 3302) materials with thicknesses of 0.6 mm and 0.8 mm. The electric current was varied at 45, 50, and 55 A, whereas the gas flow rate was varied at 12, 15, and 18 LPM. The weld bead diameter was varied as 5, 8, and 10 mm. Subsequently, the welded samples were subjected to tensile testing using a SHIMADZU AGS-X 10Kn STD E200V tensile testing machine. The data from the tensile tests were analysed using S/N ratio analysis and Analysis of Variance (ANOVA) with the assistance of the Minitab software. The results of the S/N ratio analysis indicated that the most optimal parameters were an electric current of 55 A, flow rate of 15 LPM, and weld bead diameter of 10 mm. Conversely, the ANOVA revealed that the weld bead diameter significantly influenced the tensile load in TIG welding of SPCC-SD (JIS 3141) with SGCC (JIS 3302) materials, accounting for up to 44.42% of the variation. Following the weld bead diameter, the flow rate and welding current contributed to 21.93% and 16.41%, respectively.
Co-Authors A. Thomas Abdul Rozaq Achmad Chusairi Achmad I. Fauzi Afif Hakim Agung Raharjo, Muhammad Agus Supriyanto Agustin, Fariqoh Agustini Agustini, Agustini AHMAD JUNAEDI Akbar, Arief Rahmad Maulana Al-Mufti, Alex Yusron Alamul Huda, Alamul Alfaina, Nurul Amar Amar Amin, Muhammad Syifauddin Aminanda, Yulfian AMINULLAH Aminullah Aminullah Amir Amir Amri Abdulah Apriani, Rini Arif Wibowo, Ludvi Ariyanto Ariyanto Arna Suryani, Arna Asep Permana, Asep Asfaroni, Asfaroni Aswin, Fajar Aula, Lutfi Aulia Nanda, Rizki Aulia, Megarizka Azizah Azizah Azizah, Renata Lintang Azmi, W. H. B, M. Jafar Bachtiar, Mochamad Faisal Bambang Purnomo Barokah, Sri Joyo Basit, Arul Budiansyah, Ade Cepi Budiyanto Budiyanto Burhanuddin, Fachrurrazy Cahyo, Tegar Dwi Candraloka, Olivia Cepi Budiansyah, Ade Choirul Anwar Deni Almanda Devi Rusmin Dewi, Izaty Nurillah Djunaedi Djunaedi Dodi Mulyadi Dodi Mulyadi Dwicahyo, Tegar Dyah Listyarini, Dyah Embong, Rahimah Ermiati Ermiati Fahmuddin Agus Fahrizin, Nazar Faizin, Zein Faqih, Abdulloh Fatah Syukur, Fatah Fathur Rizal, Royb Fatmawati Sabur Fatmawati, Hanny Widya Fatri Ardiansyah Fazin, Nazar Fazrin, Nazar Feriadi, Indra Fikri, Muhammad Fauzul Fitriatun, Erna Fitriya, Hasanah Fuad, M. Kholil Tsamrotul Ghany Heryana Gynanjar, Rendy Haji, Nur Hakim, Lukman El Hananto, Agustia Hani, Laily Syarifatul Hariadi, Badi Harianto Harianto Harianto Hartini, Rigen Haruddin, Haruddin Harwadi, Harwadi Hasmiah, Hasmiah Hery Widijanto Hidayat, Syahrul Taufik Hijri Darlan, Nuzul Ida Nur Lailatul Kodriyah Idyaningsih, Nining Ilmi, Uswatul Indri Susilawati Irawan, Adhi Chandra Irfani, Tomas Isrohmawati, Isrohmawati Istifadah Istifadah, Istifadah Istiqomah, Dewi Qodar Iswati Iswati, Iswati Jafar B, M. Jamilah, Masayu Jatira JOHAN A. ROMBANG Johan Wahyudi Kadariah, Kadariah Kalupae, Abdulasi Karhoma Wijaya, Ababil Karyadi Karyadi Khoiriyyah, Fitriyyatul Khoirudin Khoirudin Khoirudin, Khoirudin Kholida, Anif Kindi, Farhan Afif Al Krisdiarto, Andreas Wahyu Kumala, Sania Kumbarasari, Shanti Kusnadi, Akhmad Kustini, Sarah Kusumawardana, Arya Kusumo Nugroho Laila, Azzah Nor Lailisya Putri, Purnama Lidiawati, Neng Astri Lilik Sutiarso Lutfiyah Lutfiyah M Riva’i Mahalli, Mahalli Maisyaroh, Risma Rohmatul Makmur Manasikana, Arina Marbun, Diansyah Marsyam, Abdul Waris Maula, Rohmatul Mawardi, Mualif Agus Meilisza, Nina MELATI, MELATI Miftahudin, Moh Miftakhudin, Miftakhudin Misbahul Munir Mucharrom, Fajar Muhamad Ridwan Muhammad Ali Akbar, Muhammad Ali Muhammad Khoiruddin Muhdan Syarovy Muji Setiyo Mukarom, Muh Muliyani, Sri Erny Mulyajaya, Muhammad Satria Murniasih, Siti Murtalim, Murtalim Musta’in, Ali Muthofi’ah, Muthofi’ah Muzayanah Muzayanah Nailizzulfa, Ellisa Novitasari, Silvia Putri Nugroho, Azis Adhi Nur Amalia Nur Tajuddin Nur Widyartha, Yogi Nur, Mulyadi Nurdin, Ahmad Nurdin, Alizar Nurizka, Zalsyafina Nurul Fitria nurul latifah Nurwijayanti Octavianie, Adhitya Oktafina, Lia Refi Pamungkas, Dyan Eka Patya, Dhea Intan Permatasari, Dianur Pradiko, Iput Prima Nugroho, Andri Primananda, Septa Putra, Ignatius Putri, Ashni Fannida Istina'ima Putri, Ashni Fannida Istinaima Qisthiyyah, Wardah Qoyyin, Nadya Ismazahrotin May R. Kainde Raharjo Raharjo Raharjo, Muh. Agung Rahdiana, Nana Rahman, Ellys Rahman, Mumammad Arif Rahmanto, R. Hengki Rahmat, Lalu Bayu Septia Dwi Rajab, Dede Ardi Ramadan, Trisa Ratna Komala, Ratna Ridwan Rina Hirnawati, Rina Riswandi, Muhammad Andi Rizki Aulia Nanda Roehanah, Roehanah Rohman Rohman Rohman Rois, Nur Roni Prasetyo, Roni Rossydi, Ahmad Royb Fatkhur Rizal Safril Safril Sagoro, Tri Haryo Saifullah, Ahmad Saputra, Ridhwan Shalahuddin Sarilah Sastrohartono, Hermantoro Satela, Indika Elvanis Sa’diyah, Khalimatus Setiahati, Ignasius Putera Setianto, Rully Setiawan, Yuda Shieddieque, Apang Djafar Shieddique, Apang Djafar Sholihah, Nafis Sholikha, Mar'atus Sholikha, Ummi Singgih Dwi Prasetyo Singgih Prasetyo, Singgih Sofiyanti, Bella Solichah, Lili Subaidi Subaidi, Subaidi Subakti, Subakti Sudirman Sudirman Suhara, Ade Suhardiman, Sani Supiyani, Atin Supriyanto, Danang Suriadi Suriadi Susilo, Hendri Sutomo, Imam Suwardi Suwardi Syafari, Muhammad Muhtar Syahruramadhan, Syahruramadhan Syaifuddin Syaiful Bakhri Tania, Novita Taufik Ulhakim, Muhamad Taufiqur Rokhman, Taufiqur Thalib, Tety Thiyana, Thyana Tikamori, Ghazi Triayomi, Ria Trisnoaji, Yuki Uktoro, Arief Ika Ulhakim, Muhamad Taufik Ulhakim, Mumamad Taufik Ummah, Auliya Rahmatul USWATUN HASANAH Wafda, Mahfud Wahyuni, Titik Wardani Rahayu Wibagso, Stefanus Setyo Wilantika, Nurul Wirianata, Herry Yulita Yulita, Yulita Yuyun Suprapto Zahro, Iva Badiatuz Zaini Zaini Zamroni, Mochammad