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All Journal REKAYASA Turbo : Jurnal Program Studi Teknik Mesin Automotive Experiences Jurnal Teknik Mesin Mechanical Xplore Teknologika SEMNASTERA (Seminar Nasional Teknologi dan Riset Terapan) AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin Jurnal Polimesin
Shieddieque, Apang Djafar
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Aerospace Engineering Agriculture, Biological Sciences & Forestry 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 Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Other

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Improving Dissimilar Metal Joining Quality Through Shielded Metal Arc Welding: A Taguchi Optimization Strategy Supriyanto, Agus; Sukarman, Sukarman; Mulyadi, Dodi; Djafar Shieddieque, Apang; Abdulah, Amri; Khoirudin, Khoirudin; Apang Djafar Shieddieque
Jurnal Teknik Mesin Mechanical Xplore Vol. 5 No. 1 (2024): 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.v5i1.7867

Abstract

The results of an experiment that used an orthogonal Taguchi method to improve shielded metal arc welding (SMAW) were given. The SMAW method was used to join dissimilar metal of SPHC and St. 30. SPHC material has a low carbon steel content, while St. 30C steels contain a medium amount of carbon steel, which is used for tractor shaft axles. Carbon percentages vary slightly between the two substances. This study aimed to achieve the highest possible quality of tensile strength by utilizing the specified SMAW parameters. SPHC material has a low carbon content, whereas St. 30 steel has a moderate carbon content. This study used the Taguchi experimental method with three input variables and three experimental levels. The SNR ratio is used to evaluate the most optimal SMAW performance. ANOVA analysis is used to evaluate the most crucial parameters in determining the response variable. This research has successfully provided input on the combination of SPHC and St. 30C for SMEs. It operates effectively with a welding current of 133 A, a welding voltage of 9 V, and a filler diameter of 2.0 mm. The S/N ratio analysis found that the welding current, voltage, and filler diameter all had a significant impact on the outcome.
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.
Pengaruh Modifikasi Pipa Pendingin Terhadap Efektivitas Induced Draft Cooling Tower LBC-50 Naufal, Muhammad Fairuz; abdulah, amri; Heryadi, Yadi; Shieddieque, Apang Djafar; Rajab, Dede Ardi; Suhartini, Sri
Jurnal Teknologika Vol 15 No 2 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i2.540

Abstract

This study aims to analyze the performance enhancement of an induced draft cooling tower through modifications to the water distribution piping line, as well as to evaluate the thermal and hydraulic performance before and after modification. The initial system exhibited relatively low cooling effectiveness due to uneven water distribution and limited heat transfer between air and water within the tower. Therefore, the piping layout was redesigned to improve flow uniformity, enlarge the air–water contact area, and minimize heat losses, thereby enhancing overall cooling efficiency. The experimental tests were conducted under identical operating conditions with an inlet water temperature of 38 °C. The results showed that the outlet water temperature decreased from 33.78 °C (before modification) to 28.95 °C (after modification). The range increased from 5.17 °C to 9.12 °C, while the approach decreased from 4.68 °C to 2.61 °C, indicating a more effective cooling process approaching ideal conditions. Furthermore, the cooling capacity showed a substantial increase from 21,717.4 kW to 61,515.1 kW, signifying that the modified cooling tower can dissipate a greater amount of heat and support higher cooling demands in industrial operations. In addition, the system effectiveness improved from 52.45% to 77.58%, demonstrating a significant enhancement in heat transfer efficiency as a result of improved fluid distribution. On the other hand, the total head loss increased from 39.11 m to 63.71 m, indicating higher flow resistance due to the new configuration, but it remained within acceptable limits. Overall, the study concludes that modifying the piping line in the induced draft cooling tower significantly improves thermal performance, cooling effectiveness, and capacity, making the redesigned configuration a viable approach to increase the efficiency of large-scale industrial cooling systems..
Analisis Morfologi, Kekuatan Tarik, Dan Ketahanan Termal Serat Rami, Ijuk, Dan Sabut Kelapa Untuk Bahan Baku Media Filtrasi Udara Suriaman, Irwan; Rohman; Shieddieque, Apang Djafar; Prayitno, Bibit
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 12 No. 1 (2026)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/ame.v12i1.1940

Abstract

Perkembangan industri yang semakin kompetitif berdampak pada penggunaan bahan baku material yang dituntut agar murah dan aman bagi kesehatan. Bahan baku industri media filtrasi udara saat ini umumnya masih menggunakan material sintetik yang berasal dari residu minyak bumi. Penelitian pengembangan alternatif material pengganti material sintetik ini terus dilakukan untuk mengurangi efek berbahaya material sintetik bagi kesehatan. Serat selulosa memiliki potensi untuk dikembangkan dan digunakan sebagai pengganti material sintetik sebagai material filter udara. Oleh karenanya, penelitian ini dilakukan bertujuan untuk menganalisa karakter serat selulosa yang berasal dari dua daerah yang berbeda dengan pemberian perlakuan alkali untuk jenis serat pada sabut kelapa, ijuk dan rami. Sumber serat selulosa berasal dari Jawa Tengah dan Jawa Timur dengan perlakuan alkali dilakukan pada rentang (2-4)% dan temperatur kamar 25ºC serta kelembaban udara 52% selama 6 jam. Hasil riset menunjukkan bahwa serat selulosa yang telah diberikan perlakuan alkali memiliki nilai kekuatan tarik dan ketahanan termal yang meningkat dibandingkan serat selulosa tanpa perlakuan alkali. Selain itu hasil pengujian morfologi juga menunjukkan bahwa dengan perlakuan alkali ini serat selulosa menjadi lebih bersih dari getah.
Co-Authors Agus Solehudin Agus Supriyanto Amar Amar Amri Abdulah Amri Abdullah Ardi Rajab, Dede Basit, Arul Cahyo, Tegar Dwi Choirul Anwar Dodi Mulyadi Dodi Mulyadi Edi Gunawan Ghany Heryana Heryadi, Yadi Iman Rahayu Hidayati Soesanto Jatira Jatira Jatira Joddy Arya Laksmono Khoirudin Khoirudin, Khoirudin Kil, Sohn Chang Kurnia, Tata Kuswandi, Rendi Naufal, Muhammad Fairuz Prayitno, Bibit Putra Nugraha, Ismail Rag, Yoon Jung Rahdiana, Nana Rajab, Dede Ardi Rohman Rohman Rohman Sahrul Hidayat setiawan, Dibyo Sri Suhartini Suhara, Ade Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Suriaman, Irwan Suripto, Heri Syahri Tua Pasaribu Wilman Adi Nugraha Wilman Zaenal Muttahar, Mochammad Iqbal