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All Journal Jurnal Teknologi Rekayasa Mesin Sinergi REKAYASA Jurnal Ilmiah Arena Tekstil Metal Indonesia JTERA (Jurnal Teknologi Rekayasa) Jurnal AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Multitek Indonesia : Jurnal Ilmiah Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Community Empowerment Mechanical Engineering for Society and Industry 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
Amri Abdulah
Sekolah Tinggi Teknologi Wastukancana
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Taguchi Design of Experiment (DoE) for Evaluating TIG-welding Parameter Variations on Tensile-shear Load and Hardness Using Stainless Steel 304 Material Siswanto; Sukarman; Muyladi, Dodi; Amir; Abdulah, Amri; Putra, Ean Deka
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & 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).
Parametric Analysis and Optimization of Sinker-EDM Process for High Tensile Strength Steel Using Response Surface Methodology Rohman; Sukarman, Sukarman; Khoirudin, Khoirudin; Taufik Ulhakim, Muhamad; Mulyadi, Dodi; Amir, Amir; Abdulah, Amri
Jurnal Teknik Mesin Mechanical Xplore Vol 5 No 2 (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.v5i2.9017

Abstract

This investigation focuses on optimizing the sinker electrical discharge machining (sinker-EDM) process parameters for high tensile strength steel (HTSS), specifically SKD-11, utilizing Box-Behnken Response Surface Methodology (BB-RSM). Sinker-EDM is a commonly used technique in manufacturing moulds, dies, and components for sectors like automotive and aerospace. This process eliminates direct contact between the electrode and the workpiece. However, its low material removal rate (MRR) constrains productivity. This research endeavours to enhance MRR by employing rectangular graphite electrodes. The Box-Behnken Response Surface Methodology (BB-RSM) was utilized to evaluate the effects of pulse current, spark-on time, and gap voltage on MRR. The optimal MRR of 45.49 mm³/min was attained at a pulse current of 16 A, spark-on time of 400 µs, and gap voltage of 45 V. ANOVA revealed that pulse current and spark-on time significantly influenced MRR. In contrast, gap voltage had an insignificant impact. Interaction and surface plot analyses confirmed that high pulse current and extended spark-on time resulted in the maximum MRR. These findings provide valuable insights for optimizing the sinker-EDM process for SHTSS, contributing to enhanced productivity and efficiency in manufacturing.
Taguchi-Based Optimization of TIG Welding for Joining Low-Carbon Steel (ST37) and Stainless Steel (SUS 304) Khoirudin; Karyadi, Karyadi; Kusnadi, Akhmad; Amir, Amir; Abdulah, Amri; Hananto, Agus; Taufik Ulhakim, Muhamad
Jurnal Teknik Mesin Mechanical Xplore Vol 5 No 2 (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.v5i2.9043

Abstract

This study investigates the optimization of tungsten inert gas (TIG) welding parameters for joining dissimilar metals, specifically ST37 low-carbon steel and SUS 304 stainless steel, using the Taguchi L9 experimental design. The welding parameters evaluated include welding current (45-65 A), tungsten electrode diameter (1.6-2.4 mm), and shielding gas flow rate (12-18 LPM). The aim is to enhance joint integrity and mechanical properties by systematically analyzing the influence of these parameters on hardness and tensile load (TS loads). Hardness testing revealed that the weld zone exhibited the highest hardness, followed by the heat-affected zone and base metal. Tensile testing showed that the highest TS loads of 341 kgf were achieved at 45 A, 1.6 mm electrode diameter, and 12 LPM gas flow rate. Signal-to-noise ratio analysis and analysis of variance (ANOVA) indicated that welding current had the most significant influence on hardness and TS loads, with contributions of 39% and 41.27%, respectively, followed by electrode diameter (17% and 36.42%). In comparison, the gas flow rate had the least impact (45% and 22.31%). However, ANOVA results showed that none of the factors exhibited statistical significance (P > 0.05). The findings contribute to the field of welding engineering by providing optimized TIG welding parameters for ST37-SUS 304 joints, enhancing their reliability in various industrial applications such as automotive manufacturing, oil and gas, and power generation, where durable and corrosion-resistant welds are crucial.
Development of hybrid nanofluids and solar heat exchangers (SHX) to improve heat transfer performance in solar panel cooling Abdulah, Amri; Shieddieque, Apang Djafar; Rajab, Dede Ardi; Khoirudin, Khoirudin; Sukarman, Sukarman
Mechanical Engineering for Society and Industry Vol 5 No 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12913

Abstract

This study examined the thermohydraulic efficiency of a novel Solar Heat Exchanger (SHX) designed for cooling solar panels. The SHX was specifically created for 20 Wp solar panels measuring 450 × 350 mm. The cooling medium was a hybrid nanofluid (HNF) consisting of Al₂O₃ and SiO₂ nanoparticles (0.5–1%) suspended in a base fluid of ethylene glycol and water (EG/W) at a 10:90 ratio. Experiments were performed using flow rates ranging from 1 to 3 LPM. The HNF coolant demonstrated enhanced performance in the solar heat exchanger, with a maximum heat transfer rate increase of 56.07% compared with that of the base fluid. This improvement in the heat-transfer rate was associated with an increase in the heat-transfer coefficient, which was influenced by the flow rate and volume fraction of the HNF. The effectiveness of the HNF surpassed that of the base fluids by approximately 117%. The results indicated that higher flow rates and volume fractions improved cooling performance. The enhanced cooling efficiency and innovative SHX design make this study particularly relevant to the development of solar panel cooling systems, particularly those employing hybrid nanofluid coolants.
Pengembangan Nano-Coolant Alumina Dan Solar Heat Exchanger (SHX) Sebagai Pendingin Panel Surya Ardi Rajab, Dede; Abdulah, Amri; Nur Alam, Deden; Sukarman; Khoirudin; Waluyo, Roy
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 11 No. 1 (2025)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/ame.v11i1.1244

Abstract

Penelitian ini bertujuan untuk menganalisis kinerja solar heat exchanger (SHX) dengan menggunakan fluida nano sebagai cairan pendingin (nano-coolant). SHX berfungsi sebagai sarana penyerap panas dari panel surya. Desain SHX disesuaikan untuk panel surya dengan kapasitas 20 Wp, yaitu 35 x 45 cm. Nano-coolant yang dipersiapkan yaitu campuran 0.5% Al+etilen glikol/air (10:90). Metode uji eksperimental dilakukan untuk kinerja fluida dan SHX dengan variasi laju aliran volumetrik 1−3 LPM, dengan suhu saluran masuk fluida dipertahankan pada 35°C. Hasil penelitian didapatkan model solar heat exchanger (SHX) sebagai alat perpindahan kalor telah berhasil melakukan penyerapan panas secara maksimal dengan desain yang dibuat berliku, untuk memperluas area sentuh pada panel surya. Nano-coolant telah mencapai performa terbaik dibandingkan cairan dasar EG murni. Peningkatan terjadi sebesar masing masing 9.29, 10, dan 10.64% dibandingkan dengan EG yaitu 4.29, 5.71, dan 6.4% pada laju aliran 1, 2, dan 3 LPM. Penurunan tekanan yang terjadi dibandingkan pada cairan dasar saat laju aliran 1 LPM, dan diperoleh pressure drop nano-coolant (ΔPnc) lebih tinggi 3% dibandingkan pressure drop EG (ΔPEG).
OPTIMASI DESAIN SISTEM PEMANAS TUMBLE DRYER DARI ELECTRIC HEATER MENJADI SHELL AND TUBE HEAT EXCHANGER Amri Abdulah
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 7 No. 3 (2017): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/teknobiz.v7i3.915

Abstract

Konsumsi energi yang terus meningkat memerlukan peninjauan penggunaan energi,salah satu alternatif dalam penghematan penggunaan energi yaitu dengan memanfaatkan energipanas terbuang. Hasil kajian energi terdapat 4 electric heater yang menggunakan energi listrik diPlant SSP-2 untuk sistem pemanas Tumble Dryer, daya yang dibutuhkan untuk 1 electric heatersebesar 140 kW dan penggunaan electric heater yaitu 16 jam perhari. penggunaan energi listrikuntuk proses pemanasan ini cukup besar sehingga diperlukan suatu analisis sistem pemanasTumble Dryer dengan mengganti electric heater ke Alat penukar kalor shell and tube dengandesain yang optimal, sumber panas yang dibutuhkan Alat penukar kalor shell and tubememanfaatkan energi panas yang terbuang dari Plant CP-2 yang kembali ke Dow Coal Boiler-2.Metode analisis Alat penukar kalor shell and tube menggunakan metode sederhana denganeksperimen full factorial 4 variabel bebas 3 level sehingga ada 81 iterasi lalu dari hasil tersebutdipilih nilai koefisien perpindahan panas (U) yang paling besar, setelah dlakukan eksperimenhasilnya divalidasi menggunakan software HTRI. Hasil yang diperoleh dari perhitungan manualdidapat nilai Koefisien perpindahan panas (U)= 65.34 W/m2.K luas area (A) sebesar 11.72 m2dan nilai (Q) = 29.99 kW sedangkan hasil dari perhitungan software HTRI hasilnya tidak jauhberbeda yaitu nilai Koefisien perpindahan panas (U)= 65.67 W/m2.K luas area (A) sebesar 11.73m2 dan nilai (Q) = 26.5 kW, sehingga optimasi desain Alat penukar kalor shell and tube tersebutmerupakan hasil yang optimal dan bisa digunakan untuk mengganti electric heater yang akhirnyadidapat penghematan penggunaan energi di Plant SSP-2 sebesar 560 kW x 16 = 8960 kWh perhari,perkiraan biaya investasi dibandingkan dengan hasil penghematan diperoleh nilai modal kembalisetelah 1 tahun.
ANALISIS KEGAGALAN MATERIAL KOPLING MESIN SLITTING DI PT. XYZ Jatira; Amri Abdulah; Muhamad Wisnu Purnama; Renaldi
Jurnal Teknologika Vol 10 No 2 (2020): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (458.926 KB) | DOI: 10.51132/teknologika.v10i2.84

Abstract

Kopling merupakan salah satu komponen mesin slitting yang berfungsi untuk memutuskan dan menghubungkan putaran daya mesin ke unit pemindah tenaga atau transmisi dengan tujuan mengubah kecepatan sesuai yang diinginkan. Adapun permasalahan yang diakibatkan kopling ialah kegagalan patah pada kopling. Untuk mengetahui permasalahan kegagalan patah pada kopling ada beberapa pengujian yang dilakukan, diantaranya dengan pengujian spektrometer, pengujian kekerasan dan pengujian metalografi. Pengujian dilakukan untuk mengetahui nilai kekerasan pada material kopling akibat pembebanan yang terjadi pada kopling. Pengujian dilakukan dengan membandingkan material kopling dengan material S45C menggunakan metode heat treatment dengan variasi media pendingin. Hasil dari penelitian yang dilakukan menunjukan bahwa terdapat perbedaan nilai kekerasan antara material kopling dengan material S45C, dimana hasil pengujian material kopling menghasilkan nilai kekerasan rata-rata 97 HRB sedangkan pada material S45C menghasilkan nilai kekerasan rata-rata 88,9 HRB, berdasarkan perubahan fasa ferrite, pearlite dan martensite hasil pengamatan metalografi.
Analisis Pemanfaatan Exhaust Fan Skala Rumah Terhadap Kinerja Turbin Angin Tipe Savonius Sumbu Vertikal Dharmawan, Quewys Alqorni Mada; Anwar, Choirul; Jatira, Jatira; Abdulah, Amri
Jurnal Teknologika Vol 15 No 1 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i1.436

Abstract

The fossil fuel crisis in Indonesia, which contributes 85% of the national energy mix, has driven the need to utilize renewable energy sources, one of which is exhaust wind as industrial waste energy that has high speed (5-7 m/s) and good flow continuity. This study developed a vertical Savonius turbine with variations in exhaust-turbine distance (20, 30, 40 cm) and measured wind speed (5.3, 6, 6.4 m/s) to optimize the utilization of this energy. The results showed that the 20 cm configuration produced the best performance with a maximum power of 5.98 watts at a speed of 6.4 m/s and a Coefficient Performance (CP) of 0.16, which is 31% more efficient than a distance of 40 cm, proving the potential of exhaust wind as a renewable energy solution that is applicable in industry with a payback period of less than 3 years and the potential for reducing the load on the electricity network by up to 15%.
Heat Transfer Fluid Deposit in Retainer of Mechanical Seal Heryadi, Yadi; abdulah, Amri; Djafar Shieddieque, Apang; Ardi Rajab, Dede; Suripto, Heri; Setiawan, Dibyo; Solehudin, Agus
Jurnal Teknologika Vol 15 No 1 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i1.450

Abstract

Mechanical seals in industrial pumps play a critical role in preventing heat transfer fluid leakage, especially under high-temperature operating conditions. A key component of this system is the seal head, which functions as a compression mechanism through a spring to maintain contact between sealing surfaces. However, the spring's performance can deteriorate due to the accumulation of deposits resulting from prolonged exposure to elevated temperatures, operating pressure, and fluid degradation—ultimately leading to seal failure and fluid leakage. This study aims to investigate the thermal stability of the reservoir fluid Therminol 66 (TM-66) and its impact on seal performance under long-term thermal exposure. The methodology includes direct observation of failed seals, thermogravimetric analysis (TGA) at temperatures of 75, 150, 250, and 350 °C for durations of 3, 6, and 12 hours, and chemical characterization using Fourier Transform Infrared Spectroscopy (FTIR). Additionally, thermal degradation behavior was assessed through activation energy estimation based on weight loss data obtained from TGA. FTIR results revealed that phenylcyclohexane is the dominant compound in TM-66, with a relative intensity of 0.803119. The thermogravimetric data demonstrated that higher temperatures and longer exposure times significantly accelerated fluid evaporation and mass loss. The activation energy analysis confirmed that thermal degradation is more likely to occur under extended high-temperature conditions. These findings highlight the importance of maintaining reservoir fluid temperature below 75°C to minimize deposit buildup in the seal chamber and ensure the long-term reliability and efficiency of the mechanical seal system.
PENGARUH UKURAN BUTIR KATALISATOR CANGKANG TELUR PADA PROSES PACK CARBURIZING TERHADAP KEKERASAN DAN STRUKTUR MIKRO MATERIAL DIN 17210 C15 Rajab, Dede Ardi; Abdulah, Amri; Shieddique, Apang Djafar; Husna, Agus; Waluyo, Roy
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 7 No. 1 (2021)
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/ame.v7i1.4156

Abstract

Penambahan karbon pada permukaan baja karbon rendah sering disebut pack carburizing. Selain bahan kimia, katalisator untuk proses pack carburizing yang mudah didapatkan  yaitu cangkang telur.  Pada prosesnya, cangkang telur dihaluskan menjadi serbuk dan dicampur dengan arang tempurung kelapa. Dalam penelitian ini menggunakan variasi tiga tingkat  ukuran butir cangkang telur,  dengan ukuran yaitu ±1 mm2, ±3 mm2 dan ±5 mm2 yang masing – masing dicampur dengan karbon aktif dari arang tempurung kelapa dengan komposisi 40% cangkang telur, 60% arang tempurung kelapa. Tujuan dari penelitian yaitu untuk mencari nilai kekerasan yang terbaik.  Specimen yang digunakan sebagai  material dasar adalah baja DIN 17210 C15 yang termasuk dalam kelompok baja karbon rendah. Suhu pada proses pemanasan di furnace yaitu 950 °C dan holding time selama 2 jam,  lalu pengambilan foto mikroskopik pada material kemudian uji kekerasan material sebelum dan sesudah pack carburizing. Hasil penelitian ditemukan nilai effective case depth yang paling tinggi adalah specimen A yang menggunakan ukuran butir katalisator ±1 mm2 sebesar 1.2 mm dan terendah pada specimen C ukuran butir katalisator ±5 mm2 sebesar 0.96 mm,  dari hasil tersebut bahwa cangkang telur dengan ukuran butir yang lebih kecil akan mudah menjadi gas lebih cepat dibandingkan dengan yang lebih besar, kecepatan menjadi gas tersebut berpengaruh terhadap kekerasan permukaan specimen yang dihasilkan.
Co-Authors Abduh Al Afgani Afgani, Abduh Al Agung Maulana Rahmat Agus Solehudin Agus Suprayitno Agus Supriyanto Ahmad Fauzi Amin Rais Aminanda, Yulfian Amir Amir Amir Amir Amir Ananda Duta Suhendar Anjar Prasetyo Anwar Ilmar Ramadhan Apang Djafar Shieddique Ardi Rajab, Dede Aries Abbas Aris Budiyanto Bachtiar, Mochamad Faisal Choerul Anwar Choirul Anwar Choirul Anwar Choirul Anwar Dede Ardi Rajab Dede Ardi Rajab Dede Ardi Rajab Dede Ardi Rajab Dede Ardi Rajab Deden Nur Alam Dharmawan, Quewys Alqorni Mada Dodi Muhammad Dodi Mulyadi Fathan Mubina Dewadi Hananto, Agustia Hasanudin Hasanudin Heryadi, Yadi Heryana, Ghany Hilman Nugraha Husna, Agus Iman Nurshahid Ina afriani Ina Irawan, Adhi Chandra Jaenudin Jatira Jatira Jatira Jatira Jatira Jatira Jatira Jatira Jatira Jatira Jefri Jafarudin Karyadi Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin Khoirudin, Khoirudin Kil, Sohn Chang Kurnia, Tata Kusnadi, Akhmad Maulana Kukuh Prasetyo Moch Iqbal Zaelani Mutahar Mohamad Rizkiyanto Mudjianto Ramadhan Cahya Muhamad Ardiansyah Muhamad Dani Muhamad Taufik Ulhakim Muhamad Taufik Ulhakim Muhamad Wisnu Purnama Muhamad Wisnu Purnama Muhammad Ali Akbar Muhammad Ali Akbar, Muhammad Ali Murtalim Murtalim Murtalim Muyladi, Dodi Nana Rahdiana Nana Rahdiana Nazar Fazrin Nefli Yusuf Nur Alam, Deden Putra, Ean Deka Rag, Yoon Jung Rahdiana, Nana Rahmanto, R. Hengki Raja Mualtio Panggabean Rajab, Dede Ardi Renaldi Renaldi Renata Lintang Azizah Revi Kusnadi Ricko Valderama Riswandi, Muhammad Andi Rohman Rohman Rohman Rohman Rohman Rohman Rohman Roy Waluyo Saiful Anwar Saputra Sigalingging, Wanri Satria Prayoga setiawan, Dibyo Setiawan, Yuda Shieddieque, Apang Djafar Shieddique, Apang Djafar Shieddique, Apang Djafar Siswanto Sohn Chang Kil Solihin Stefanus Bambang Jumawan Sukarman Sukarman Sukarman Sukarman - Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Sukarman Suripto, Heri Taufik Ulhakim, Muhamad TB. Utami Adi Subekhi Thiyana Thiyana Tomas Irfani Wawan Yoon Jung Rag Yulfian Aminanda Zaidar, Chilfi