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All Journal Jurnal Dedikasi Traksi : Majalah Ilmiah Teknik Mesin Majalah Ilmiah MOMENTUM Media Mesin: Majalah Teknik Mesin R.E.M (Rekyasa Energi Manufaktur) Jurnal JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Wikrama Parahita : Jurnal Pengabdian Masyarakat Journal of Energy, Mechanical, Material and Manufacturing Engineering Jurnal Rekayasa Material, Manufaktur & Energi Journal of Engineering and Scientific Research (JESR) Jurnal Pengabdian Masyarakat Bumi Raflesia Jurnal Ekobis : Ekonomi Bisnis & Manajemen JTTM: Jurnal Terapan Teknik Mesin BEMAS: Jurnal Bermasyarakat Jurnal Abdimas Serawai Educivilia: Jurnal Pengabdian Pada Masyarakat Mechanical Engineering for Society and Industry Proceedings Series on Physical & Formal Sciences Urecol Journal. Part E: Engineering AutoMech : Jurnal Teknik Mesin Metalik: Jurnal Manufaktur, Energi, Material Teknik
Wilarso, Wilarso
Sekolah TInggi Teknologi Muhammadiyah Cileungsi
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Analysis of the Influence of Changes In Workpiece Rotation and High Speed Steel Lathe Tool Angles on the Surface Roughness of ST37 Workpieces Hilman Sholih; Izar Mahmud Syuhada; Asep Dharmanto; Asep Saepudin; Wilarso; C.W. Mohd Noor
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.11094

Abstract

Turning is a machining process used to shape products by cutting a rotating workpiece with a sharp chisel. One of the problems that occurs in the turning process is the level of surface roughness that does not meet the specified specifications. Even though the dimensions are in, the final product is rejected because the surface is too rough. The level of surface roughness is determined by several factors, including cutting speed, rotation speed and cutting edge geometry. Lathe tool geometry consists of clearance angle, relief angle, rake angle, and back rake angle. This research aims to determine the effect of spindle rotation speed and tool angle on the level of roughness of the workpiece on a lathe. Spindle rotation speed 300 rpm and 600 rpm. The only change in the tool geometry is the clearance angle with angles of 10°, 20° and 30°. The workpiece material used is ST37. The chisel material used is High speed steel (HSS). Testing of the results of the turning process is carried out by comparing the surface roughness with a surface roughness comparator. Cutting speed is not changed. From the research results, the recommended angle is an angle of 10º with the surface roughness results obtained being N5.
Analysis of Damage and Repairs to the Transmission Part of the Komatsu Type GD825-2 Grader Unit Wilarso, Wilarso; Bayu Idiyanto; Awang Surya; Hilman Sholih
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 9 No 1 (2024): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v9i1.1698

Abstract

The Plant Rebuild Center, owned by PT. X, must raise quality to meet customer expectations and fulfill field needs. According to customer warranty claims in 2022, oil leaks in the transmission control valves of GD825-2 type units—11 in total—are the most common cause. This research's operational goal is to identify the source of the most damage to transmission components, particularly in Komatsu GD 825-2 units, so that corrective action may be taken and the effects can be monitored. At PT X's Plant Rebuild Center, corrective measures were implemented and standard operating procedures were created to serve as a guide for rebuilding Komatsu GD 825-2 unit transmission components. The analytical approach applies five why analyses. The findings show that oil leaks in the transmission control valve are the most common cause of damage. The engineering techniques used to achieve this improvement included duplicating the sleeve using the manufacturer's standard reference and altering the o-ring seat height during the semi-finishing stage before measuring and cutting during the finishing process. This resulted in the surfaces of the sleeve and transmission housing being identical. Work Instructions (INK) for installing the GD825-2 unit transmission control valve and a Checksheet for the GD825-2 type Grader unit transmission assembly have been developed as Standard Operating Procedures (SOPs)
Pelatihan K3 di SMK 1 Muhammadiyah Cileungsi, Bogor, Jawa Barat Wilarso, Wilarso; Asep Saepudin; Asep Dharmanto; Muhammad Ilham Alhabsyie
JURNAL ABDIMAS SERAWAI Vol. 4 No. 1 (2024): Jurnal Abdimas Serawai (JAMS)
Publisher : Program Studi Administrasi Fakultas Ilmu Sosial dan Ilmu Politik Universitas Muhammadiyah Bengkulu 

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/jams.v4i1.6082

Abstract

Dalam hal keselamatan kerja tidak membedakan faktor umur, jenis kelamin, status, jabatan, semua manusia bisa mengalami kecelakaan kerja jika tidak mengikuti peraturan yang telah diterapkan oleh instansi. Oleh karenanya tujuan dari program PKM ini adalah memberikan pendampingan dasar implementasi terkait aspek K3, agar mereka memiliki bekal dasar mengenai teori K3, jenis-jenis potensi bahaya ditempat kerja dan pentingnya peranan 5R sebagai dasar pondasi program improvement lainnya dan kaitannya dengan unsur safety dalam bekerja, pemahaman dasar ini penting sebagai pembekalan sebelum mereka berkecimpung dalam dunia kerja. Metode dalam pengabdian ini melalui kuliah dan diskusi tatap muka di sekolah SMK 1 Muhammadiyah Cileungsi-Bogor, Jawa Barat. Diharapkan dapat menggugah kesadaran siswa/i dan menjadi budaya positif dan bisa mengaplikasikan pengetahuan tersebut disetiap kegiatan sehari-hari
Pelatihan dasar autocad bagi siswa dan siswi di lingkungan SMK Muhammadiyah Cileungsi Asep Saepudin; Asep Dharmanto; Wilarso, Wilarso; Hilman Sholih; Aswin Domodite; Muhamad Ali Pahmi
JURNAL ABDIMAS SERAWAI Vol. 4 No. 1 (2024): Jurnal Abdimas Serawai (JAMS)
Publisher : Program Studi Administrasi Fakultas Ilmu Sosial dan Ilmu Politik Universitas Muhammadiyah Bengkulu 

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/jams.v4i1.6339

Abstract

Kompetensi siswa dan siswi di tingkat Sekolah Menengah Kejuruan sering mengalami kendala dalam hal pemahaman dasar gambar Teknik. Pada saat lulus sekolah tingkat pemahaman dasar gambar Teknik masih rendah. Sehingga tingkat serapan lulusan di dunia industry masih diragukan. Tujuan di selenggarakan pelatihan dasar perihal gambar Teknik ini untuk meningkatkan kompetensi siswa dan siswi di lingkungan SMK Muhammadiyah 2 Cileungsi. Metode dalam pelaksanaannya tatap muka dan mempraktekan cara menggambar Teknik di computer yang sudah terinstall software autocad. Dari hasil pelatihan yang dihadiri 40 peserta, dimana dari kelas teknik kendaraan ringan dan teknik komputer jaringan. Pembukaan kegiatan disampaikan oleh Hilman Sholih, dimana pentingnya pelatihan ini untuk meningkatkan kemampuan siswa dan siswi mengenai dasar gambar teknik. Paparan pengenalan dasar solid word yang disampaikan oleh pemateri pertama Asep Dharmanto. Dalam penjelasan tersebut menjelaskan fitur pada solid word untuk memudahkan dalam mengambar. Paparan kedua disampaikan oleh Asep Saepudin. Paparan perihal pengertian dasar solid word lebih memudahkan dalam proses mengambar 3D. sedangkan penjelasan mengenai dasar autocad, lebih ke 2 D dan menjelaskan dasar symbol yang sering dipergunakan pada cara mengambar autocad. Minat siswa dan siswi selama mengikuti dan ketertarikan perihal gambar teknik cukup tinggi dan diharapkan kegiatan ini berlanjut sampai di level guru dan toolman. Supaya memudahkan dalam proses pembelajaran dikelas
Kontrol Sistem Water Loop Untuk Pendingin Showcase Makanan dan Minuman Wilarso, Wilarso; Fitriaji, Abdul Azis; Saepudin, Asep; Dharmanto, Asep
AutoMech : Jurnal Teknik Mesin Vol 2, No 02 (2022): Nopember
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/jtm.v2i02.5734

Abstract

Dalam artikel ini, sistem pendingin pada bagian pengubah zat refrigerant berbentuk gas ke bentuk cair telah dimodifikasi yang dimana siklus tersebut terjadi pada unit PHE (Plate Heat Exchanger) dengan dilakukanya proses putaran air. Sistem water loop ini merupakan perubahan dari sistem pada umumnya. Dimana siklus air digabungkan dengan sistem pendingin menggunakan kompresor berkecepatan variabel. Untuk unit PHE (Plate Heat Exchanger) memiliki fungsi dimana fluida gas yang bertekanan tinggi akan mengalami proses pertukaran kalor oleh putaran air secara berkelanjutan. Penelitian ini dilakukan terhadap 2 unit showcase yang berbeda tipe secara observasi, dengan mengamati pada saat uji coba tes running di PT.XYZ. Selanjutnya dilakukan perbandingan hasil dari penelitian yang menggunakan sistem water loop dengan sistem pendingin pada umumnya melalui data. Berdasarkan dari hasil penelitian bahwa penggunaan sistem water loop, unit menjadi lebih terdistribusi, penggunaan pipa tembaga lebih sederhana, menghemat zat refrigeran, dan mengurangi kebisingan. Lalu pada hasil uji tes running didapat hasil suhu mencapai target yaitu -0,1 dengan daya 1,0255 KW pada showcase pertama, dan nilai suhu mencapai -21dengan daya 1,3695 Kw pada showcase kedua, dengan waktu yang berbeda
Analysis of the corrosion rate and remaining life of the B3 waste transport roll-off tank composed of 316L stainless steel Iwung Hari Retno; Wilarso; Che Wan Mohd Noor
JTTM : Jurnal Terapan Teknik Mesin Vol 4 No 1 (2023): JTTM: Jurnal Terapan Teknik Mesin
Publisher : Teknik Mesin - Sekolah Tinggi Teknologi Muhammadiyah Cileungsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37373/jttm.v4i1.551

Abstract

Corrosion has eroded the shell and head of the roll-off tank used to carry B3 waste. This influence will effect on the functioning of the waste containment tanks, as well as the general safety of the public. The goal of this study was to examine the viability of employing a roll off tank by completing a visual inspection and engineering calculations using ASME VIII and API 510 standards to determine the corrosion rate and remaining life in the roll-off tank. This study employs a quantitative approach. Tank design data was acquired using SA-240/G316L material with an initial shell and head thickness of 6 mm and an actual thickness of 5.45 mm shell and 5.50 mm head. The corrosion rate and remaining life analysis yielded a Thickness Required shell value of 4.33 mm and a head value of 4.33 mm, with a shell and head Corrosion Rate value of 0.04 mpy, a Maximum Allowable Working Pressure (MAWP) value of shell and head of 0.63 Bar, and a shell and head remaining life value of 28 years and 30 years, respectively. It may be established that the roll-off tank is still operationally viable. Maintenance and testing regularly to improve roll-off tank performance
Strength Analysis of Crusher Construction in Nyamplung Seed Peeling Machine Using the Finite Element Method Nandang Imam Santosa; Asep Dharmanto; Asep Saepudin; Wilarso
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 2 (2024): December 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i2.11757

Abstract

The nyamplung seed peeling machine uses a single roll crusher as its operating principle to automatically separate the nyamplung fruit's shell. One of the crucial parts of this apparatus that breaks down the nyamplung fruit shells is the crusher. The issue arises from the fact that the strength of the material utilized to construct the crusher is still unknown. This raises questions regarding how well the Nyamplung bean peeling machine crusher will function if it is used constantly. The purpose of this study is to identify the kind of material that works well for a nyamplung seed peeling machine crusher. An analysis will be conducted to ascertain the strength of the Nyamplung seed peeling machine crusher to follow up on this issue. The finite element method was used to conduct the testing. ASTM A36 and AISI 304 are the two materials that are compared in this analysis. In addition, it can be used to compare two different types of materials in terms of their strength, cost, and degree of safety. Following analysis for manual shaft calculations utilizing AISI 304 and ASTM A36 materials. With a yield strength of 250 N/mm², a safety factor of 9, a displacement of 0.022 mm, and von Mises stress readings of 29.044 N/mm² were achieved from the crusher simulation utilizing ASTM A36 material. Von Mises stress for the AISI 304 material was 28.471 N/mm², displacement was 0.023 mm, safety factor was 7, and yield strength was 206.804 N/mm².
Analysis of GTAW and FCAW Welding in Impact Testing in Steel Micro Structures Muhamad Farhan; Wilarso; Aswin Domodite; Awang Surya
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 2 (2024): December 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i2.11772

Abstract

Welded joints, which encompass the criteria of welding base metal connections in the material, welding speed, material quality, and material toughness, are an integral aspect of tank construction. Steel material joints frequently fail during the Gas Tungsten Arc Welding (GTAW) and Flux Cored Arc Welding (FCAW) welding procedures because air droplets become trapped in the steel material during the welding process. Finding the primary reasons for welding failures is the goal of this study. Impact and microstructure testing are used in the welding research method on SS400 steel. The FCAW welding process uses E71T-1C (Kobe) Electrodes Steel Familiarc AWS A5.2 E71T-1C) at varying currents of 80 A (Root), 100 A (Filler), and 120 A (Capping), against SS400 steel plate material with a thickness of 10 mm x 200 mm x 200 mm in V Buut seams Joints. The GTAW ER 70 SG (Familiarc Filler/Rods TG-S51T) Electrode classification allows for 90 A (Root), 110 A (Filler), and 120 A (Capping). Plate 1 has a value of 36.3 kJ/inch in the heat input calculation findings at the three section sites, while Plate 2 has the highest value of 61 kJ/inch. In the meantime, FCAW plate 2 has an impact strength value of 142.1 J, and plate 1 has an average hit in the test results at each of the three places of the specimen, according to the impact test findings. Three welding parameter points were used to record the findings of the metallographic testing's microstructure observations. plates 1 and 2 on the capping, filler, and root. being aware of the areas in the welded junction between plates 1 and 2 that are impacted by heat in the microstructure. Because of the material's strong heat input, which makes the steel brittle and promotes the formation of pearlite rather than ferrite, plate 2 has the highest value in the impact test
Sweep Frequency Response Analysis for Assessment Deformation Core at Power Transformer Wilarso, Wilarso; Saepudin, Asep; Sholih, Hilman; Dharmanto, Asep
Journal of Engineering and Scientific Research Vol. 6 No. 2 (2024)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v6i2.156

Abstract

SFRA (Sweep Frequency Response Analysis) is a transportation test where one of the purposes of this test is to ensure that the core of the power transformer does not shift due to the journey from the factory to the field. The SFRA testing is divided into 4 frequency range areas from 20 Hz to 20 MHz and this research is focused on the frequency range below 2 KHz, based on experience at this frequency to check transformer core problems and specific failures in shifting power transformer cores. Based on the comparison results of SFRA testing carried out at the power transformer factory during the FAT (Factory Assessment Test) with testing in the field during the first SAT (Site Assessment Test) and with the second SAT testing, there are differences in the frequency area below 2 KHz, this shows that there is a problem in the area power transformer core, before drawing a final conclusion that there is a problem or deformation in the transformer core, you must look at the results of other tests carried out in the field such as ratio test, winding resistance test, tangent delta test, excitation current test, insulation resistance (megger test). ) winding and core-frame as well as impact recorder data during the journey from the factory to the field. If all other field test results are good then the power transformer is still in good condition and ready to operate and the difference in the graph at a frequency of less than 2 KHz in the SFRA test during SAT compared to when FAT is likely to be caused by residual magnetism that is still on the core side due to testing. DC before or. Residual magnetism can occur due to static electrical phenomena due to the oil purification process or due to the induction effect of the network grounding system where the power transformer is placed
Windshield Damage Analysis on ATR 42/72-600 Aircraft at PT. DEF Wilarso, Wilarso; Indra Gumilar; Hilman Sholih; Asep Saepudin
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 10 No 1 (2025): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v10i1.1750

Abstract

Windshield damage on ATR 42/72-600 aircraft at PT. DEF has caused operational disruptions, including flight delays, increased maintenance costs, and potential safety risks. Repeated damage to the Windshield is caused by various factors, namely inspection and maintenance errors, improper installation procedures, damage to the heating system or pressure distribution, glass material degradation, and exposure to extreme weather and UV rays. In this study, the analysis was carried out using a quantitative method with a fishbone diagram to identify the main causes of damage and appropriate mitigation steps. The results of the analysis showed that the main factors contributing to the damage were errors in inspection, installation errors, and material degradation. After implementing mitigation steps such as improving technician training, revising maintenance procedures, and improving material selection, there was a significant decrease in the frequency of Windshield damage. An indication of the success of these mitigation steps can be seen from the repairs carried out during January to June 2024 which succeeded in reducing damage and rejects on the Windshield by 40% compared to 2023, improving the quality of maintenance, inspection and material durability. In terms of maintenance costs for spare parts, there is a decrease in spending on purchasing spare windshields, namely USD 15,375 (PPG Inc.) x 10 units = USD 153,750 in 2023 to USD 21,915 (Saint Gobain) x 3 units = USD 65,745 in 2024 (June), which is 42% until mid-2024. This step increases operational reliability, cost efficiency, flight safety, and employee productivity, customer satisfaction also increases along with reduced flight delays and cancellations due to technical problems. Overall, the study succeeded in reducing Windshield damage and increasing the company's operational efficiency and reliability
Co-Authors Abda Abda Achmad Husen Afriliyanti, Alfiyah Ahmad Aji Kurniawan Ahmad Faisal Mohamad Ayob Aji Setiawan Alfiyah Afriliyanti Ari Dwi Wibowo Arif Ardianto Asep Dharmanto Asep Dharmanto Asep Saepudin Ashari Imamuddin Aswin Domodite awang surya Awang Surya Azharul, Firmansyah Azziqi, Yusril Zindar Barlan Tahiti Saufa Bayu Hamengku Rizkiansyah Bayu Idianto Bayu Idiyanto Bayu Idiyanto C.W. Mohd Noor Che Wan Mohd Noor Che Wan Mohd Noor Che Wan Mohd Noor Dan Mugisidi Dharmanto, Asep Djoko Wahyu K Domodite, Aswin Fatur Rohim Fauzi Ramdani Firman Firman Gunawan Firman Gunawan Firmansyah Azharul Firmansyah Azharul Fitriaji, Abdul Azis Giardyan Komara Hanifah Syayidah Lutfiyah Hilman Sholih Holyness Nurdin Singadimedja Idris, Mustopa Ika Novalia Saputri Ika Novalia Saputri Ilman Nadif Filsafah Indra Gumilar Irpan Setiawan Iwung Hari Retno Iwung Hari Retno Izar Mahmud Syuhada Jaelani Syurdiansyah Jujun Juniadi Juniadi, Jujun Khoidul Umam M Ali Pahmi M. Tri Maulady Alamsyah Miftahul Imtihan Mohamad Anas Sobarnas Mohd. Yuhazri Yaakob Muhamad Farhan Muhammad Ilham Alhabsyie Muhammad Mujtaba Mujiarto Mujiarto Mujiarto, M. Mupah Rizal Mustopa Idris Mustopa Idris Nandang Imam Santosa Nandang Imam Santosa Nur Rofiq Nurkholis Pamuji Agustiar Ma’sudi1 Pracoyo, Wisnu Rendi Reshudin Retno, Iwung Hari Rizki Rudi Indrawan S.Pd. M Kes I Ketut Sudiana . Saepudin, Asep Sholih, Hilman Solly Aryza Sugiharjo Sulistya Agus Prabowo Surya, Awang Umam, Khoidul Umam Upay Ripa’I Verry Surya Hendrawan Wan Nurdiyana Wan Mansor Wijanarko Wisnu Pracoyo Wisnu Pracoyo Wisnu Pracoyo Yusril Zindar Azziqi