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All Journal Jurnal Teknik Mesin Rotasi Rekayasa Mesin FLYWHEEL : Jurnal Teknik Mesin Untirta Teknika: Jurnal Sains dan Teknologi DINAMIKA Jurnal Ilmiah Teknik Mesin Jurnal Rekayasa Mesin Jurnal Pendidikan Teknik Mesin Turbo : Jurnal Program Studi Teknik Mesin JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Journal of Energy, Mechanical, Material and Manufacturing Engineering INTEK: Jurnal Penelitian Barometer Jurnal Teknik Mesin Jurnal Mesin Nusantara Malikussaleh Journal of Mechanical Science Technology Al-Ijtima: Jurnal Pengabdian Kepada Masyarakat Jurnal Inovasi Teknologi Terapan Trends in Mechanical Engineering Research Al-Ijtimā: Jurnal Pengabdian Kepada Masyarakat
Saefuloh, Iman
Jurusan Teknik Mesin Fakultas Teknik Universitas Sultan Ageng Tirtayasa
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MECHANICAL PROPERTIES CHARACTERIZATION OF THE FRICTION WELDING OF ALUMUNIUM WITH COPPER USING VARIATIONS IN ROTATIONAL SPEED AND CONTACT SURFACE ROUGHNESS Saefuloh, Iman; Sunardi, Sunardi; Lusiani, Rina; Jannah, Miftahul; Suryana, Suryana
Trends in Mechanical Engineering Research Vol 1, No 2 (2023): December
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v1i2.25672

Abstract

One of the welding used for different materials is by using friction welding. Friction welding is a welding method by swiping the two materials until they reach some of the melting points of the materials to be joined and then subjected to constant pressure. In this study, the materials to be joined were aluminum and copper. By using variations of rotational speed and contact surface roughness, the mechanical properties of the welds were investigated. The speed variations used were 1230, 1500, and 2500 rpm. Meanwhile, for variations in surface roughness, sandpaper grades 100, 800, and 1500 were used. The results of this study were that at a rotational speed of 1230 rpm, the highest tensile strength and hardness values were obtained, namely 59.6 MPa and 54.6 HVN (Al), 112.1 HVN (Cu). For variations in surface roughness, the highest hardness value was found in surface roughness using sandpaper grade 1500, namely 54.18HVN (Al), and 112.1HVN (Cu). And the highest tensile strength is obtained on grade 100 sandpaper with a value of 52.48MPa. The results of the microstructure test in the weld joint area with a magnification of 1000x showed that the welding of aluminum and copper using the friction welding method was successful, as evidenced by the diffusion of aluminum and copper in this area.
PREVENTIVE MAINTENANCE IN THE COLD SAW AREA AT PT. KBK Hidayat, Rahmat; Rosyadi, Imron; Pinem, Mekro Permana; Sudrajad, Agung; Saefuloh, Iman; Erwin, Erwin
Trends in Mechanical Engineering Research Vol 2, No 2 (2024): December
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v2i2.30950

Abstract

In an increasingly competitive industrial environment, effective maintenance strategies are critical to ensure optimal machine performance and minimize downtime. This report focuses on the implementation of preventive maintenance in the cold saw area at PT. KBK, a steel production company. Preventive maintenance procedures were carried out to sustain machine reliability, particularly focusing on components such as the roll table, bolt coupling motor translation, sliding rails, and hydraulic motors. The report outlines the preventive maintenance schedule, inspection processes, and key findings during the maintenance period. The most frequently encountered issue was the deterioration of the saw blade, affecting cutting quality and operational efficiency. Contributing factors to these issues include human error, material hardness, improper maintenance methods, and machine age. A fishbone diagram analysis was used to determine root causes of failures, highlighting areas for improvement in maintenance practices. The study concludes that consistent preventive maintenance is essential to reduce machine failures, enhance productivity, and improve product quality. Recommendations are provided to enhance the maintenance process, including increased use of personal protective equipment (PPE) and more stringent inspection protocols.
THE EFFECT OF VOLUME FRACTION AND FIBER LENGTH ON THE TENSILE AND IMPACT STRENGTH OF SILK FIBER REINFORCED COMPOSITES sinarep, Sinarep; Muhamad, Ardani; salman, Salman; Saefuloh, Iman; Achmad, Zainuri
Trends in Mechanical Engineering Research Vol 1, No 1 (2023): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v1i1.20848

Abstract

Material engineering technology every year always makes new breakthroughs in creating high-quality materials and have an adequate contribution. Natural fiber reinforced composite material is one of the materials currently used as fillers in composite products. Composite with natural income also has a variety of advantages offered, namely low prices and abundant availability. This study discusses the fraction of fiber volume and fiber length on the tensile strength and impact of fiber reinforced silk fibers (Samia chynthia rucini). In this study the volume fractions of fiber used were 10%, 15% and 20% with a fiber length of 10 mm and 50 mm using an epoxy resin matrix. From the composite tensile test results prove the increase in tensile strength obtained increases the volume of silk fiber in the composite. 20% with a fiber length of 10 mm is 6.859 MPa, while the lowest tensile strength value in composites with a fiber volume fraction of 0% is 1.653 MPa. The impact test shows the strength of 10% fiber volume fraction composite with 10 mm fiber length that is 0.54535 J/mm2, while the lowest impact strength value is 0% fiber volume fraction composite that is 0.50686 J/mm2. 
STUDY OF PARTICLE BOARDS CHARACTERISTIC BASED ON SENGON WOOD PARTICLE AND OIL PALM EMPTY FRUIT BUNCHES Sunardi, Sunardi; Putra, Rizky Kurnia; Lusiani, Rina; Saefuloh, Iman; Sudrajad, Agung
Trends in Mechanical Engineering Research Vol 1, No 1 (2023): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v1i1.20477

Abstract

Oil palm empty fruit bunches (OPEFB) as a by-product of the palm oil processing industry. This waste can cause problems for the environment and human health. Utilization of OPEFB waste as particle board material to reduce this waste. The composition of the particle board is based on volume fraction, namely 15% empty palm fruit fiber, 15% epoxy resin, 20% PVAc adessive, and 50% sawdust. The manufacturing process of samples was carried out using the single punch cold press method with compaction pressure of 10, 30, and 50 bar. The experimental results show that a compacting pressure of 10 bar can produce particle board performance according to SNI 03-2105-2006 with a characteristic density of 0.93 gram/cm3, thickness swelling of 2.52%, hardness of 24 N/mm2, flexural strength of 840.05 N/mm2, and impact strength 6.00 kJ/m2.
Evaluasi Partikel Cangkang Buah Maja Sebagai Filler Pada Komposit Kampas Rem Organik Yuda Permana, Ananto; Ula, Shofiatul; Listijorini, Erny; Saefuloh, Iman; Sudrajad, Agung; Sunardi, Sunardi
Jurnal Inovasi Teknologi Terapan Vol. 3 No. 2 (2025): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v3i2.349

Abstract

The exploration of natural resources as materials for engineering applications is increasingly important, as organic materials offer greater environmental benefits. The Maja fruit, a typical Indonesian plant, has not been fully utilized for engineering purposes, particularly its shells. The goal of utilizing this material is to contribute to sustainable development. In this study, Maja fruit particles were used as a filler in combination with rice husk ash. The particle compositions of Maja fruit were set at 20%, 30%, and 40%, respectively. The composite fabrication process was conducted under cold conditions at a pressure of 30 MPa. The results indicated that an increase in the composition of Maja fruit shell particles led to higher compressive strength in the composite, although this caused a decrease in surface hardness. The optimal composite performance was achieved with a composition of 40% Maja fruit shell particles and 60% epoxy resin, as determined by a weighting method. It was also observed that while the inclusion of rice husk ash tended to reduce compressive strength, it contributed to enhancing the hardness of the composite.
Fatigue Characteritics of Medium Carbon Steel after Heat Treatment Using Sand as Cooling Media Sunardi, Sunardi; Randu, Randu; Listijorini, Erny; Saefuloh, Iman; Notonegoro, Hamdan Akbar; Jannah, Miftahul
INTEK: Jurnal Penelitian Vol 8 No 2 (2021): October 2021
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31963/intek.v8i2.2817

Abstract

Stress concentrations cause many machine element failures. Failure will occur more rapidly if the machine elements obtain repeated and fluctuating loading. For this reason, the material for machine elements must have better fatigue life. There are various attempts made to increase material life and other mechanical properties. In this study, the research sample used is AISI 4140 steel. The samples obtain hardening followed by cooling and tempering. The hardening temperature is 8500C with a holding time of 17 minutes. The cooling media in this research are dry sand, semi-wet sand, and wet sand. Wet measurements based on volumetric ratios. Semi-wet sand with a ratio of sand and water 4: 1, sandy sand 4: 2. The final process is tempering treatment, with a temperature of 2500C. The material fatigue test refers to the JIS Z 2274 Standard. From this study, the heat treatment given can reduce the fatigue life of the material, even though the hardness increases. The higher the cooling rate, the hardness of the material increases, but the fatigue life is low.
Co-Authors Abdurrofi Zahrawani Achmad Nurhidayat Achmad, Zainuri Agung Sudrajad Agus Pramono Agus Pramono Ahmad Bahrul Ulum Ahmad Rifa’i Alhamidi, A. Ali Alhamidi, Ahmad A Aris Munandar Aswata Aswata Aziz, Abdul Bintang Adjiantoro Brian Laksana Gemilang Brillian Ardy Mahendra Burhani, Ichwan Caturwati , Ni Ketut Daris Miftah Dzaky Deprilen Dacha Dwinanto Dwinanto Edwin Prasetya Eko Surjadi Erni Listijorini Erny Listijorini Erwin, Erwin Gilang Aji Prayoga Hamdan Akbar Notonegoro Hamdan Akbar Notonegoro Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Haryadi Hermawan Susanto Hesti Istiqlaliyah Hidayat, Rahmat Imron Rosyadi Imron Rosyadi Indah Uswatun Hasanah Ipick Setiawan Ipick Setiawan Ipick Setiawan Ipick Setiawan Ipik Setiawan Jannah, Miftahul Latief, Muhamad Listijorini , Erny Lusiani, Rina Lusiani, Rina Maulana Fazdri Miftahul Jannah Miftahul Jannah Moh. Fawaid Muhamad Rizki Mutaqien Muhamad, Ardani Muhammad Gema Winisuda Muhammad Nurul Huda Mujahid Mujahid Murni Handayani Ni Ketut Caturwati, Ni Ketut Notonegoro, Hamdan Akbar Notonegoro, Hamdan Akbar Nufus Kanani Oetomo, Pandoe Satria Panji Setyo Aji Permana Pinem, Mekro Pinem, Mekro Permana Putra, Rizky Kurnia Putra, Styven Handoyo Randu, Randu Rhaka Qudzsy Wening Praja Ricki Hikmatullah Rina Lusiani Rispan, Wahyu Rohmat, Agus Rosyadi , Imron Rosyadi, Imron S Sunardi S Suryana salman, Salman Satrio Herbirowo Shafnur Hamdi Shofiatul Ula Sidik Susilo sinarep, Sinarep Slamet Wiyono Slamet Wiyono Sudrajad, Agung Sunardi Sunardi Sunardi, Sunardi Sunardi, Sunardi Suryana, Suryana Syarif Abdullah Ula, Shofiatul Wahyudi, Hadi Wijoyo Wijoyo Wijoyo Wijoyo Willy Jamaludin Wiyono , Slamet Yuda Permana, Ananto Yusuf , Yusvardi Yusvardi Yusuf Zakaria Zakaria