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All Journal Rekayasa Mesin E-Dimas: Jurnal Pengabdian kepada Masyarakat Civil Engineering Journal Adimas : Jurnal Pengabdian Kepada Masyarakat Jurnal Teknik Mesin Indonesia KURVATEK Mekanika: Majalah Ilmiah Mekanika Jurnal Berdaya Mandiri Jurnal Nasional Teknologi Terapan International Journal of Sustainable Transportation Technology Abdi Masya Journal of Mechanical Engineering Automotive Experiences METAL : Jurnal Sistem Mekanik dan Termal
Muhayat, Nurul
Department Of Mechanical Engineering, Universitas Sebelas Maret, Surakarta 57126,
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Mitigation of Porosity and Residual Stress on Car Body Aluminum Alloy Vibration Welding: A Systematic Literature Review Saifudin Saifudin; Nurul Muhayat; Eko Surojo; Yupiter HP Manurung; Triyono Triyono
Automotive Experiences Vol. 5 No. 3 (2022)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.7965

Abstract

Fatigue resistance is influenced by porosity and residual stress in welded joints. Fatigue failure in some means of transportation is caused by the inability to withstand the load received from the car body and passengers while operating. This study uses a systematic literature review (SLR) method to identify the effect of vibration welding on porosity and residual stress. Vibration can reduce the empty cavity (porosity) and increase the density of the weld. The ultrasonic vibration spot resistance (UVSR) method with 20 kHz on AA6082 is able to reduce residual stress up to 53% and is effective for homogenization of concentrated residual stress up to 57%.
EFFECT OF SHIELDING GAS ON THE PROPERTIES OF STAINLESS-STEEL SUS 304L PLUG WELDED Ilham Habibi; Januar Tri Prasetyo; Nurul Muhayat; Triyono Triyono
Jurnal Rekayasa Mesin Vol. 13 No. 3 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i3.1251

Abstract

The effect of shielding gas composition and welding current on the mechanical-physical properties of plug welding joint stainless steel SUS 304L has been investigated. Metal Inert Gas (MIG) welding was used to join SUS304L with a thickness of 3 mm. The variations of welding current were 80 A, 100 A, and 120 A, while variations of shielding gas composition were 100% Ar; 92,5% Ar-7,5% CO2; 85% Ar-15% CO2; 77,5% Ar-22,5% CO2; 100% CO2. Macro and microstructural tests were conducted to determine welded joints physical properties. Tensile-shear testing and micro hardness Vickers were done to determine welded joints physical properties. The results show that the higher level of welding current and CO2 content in the shielding gas, the more tensile-shear load bearing capacity and decreased hardness. The welding current of 120 A and shielding gas 77,5% Ar-22,5% CO2 produced welded joints with the highest tensile-shear load bearing capacity. The nugget size increased as the higher level of welding current and the CO2 content in the shielding gas due to the increase of heat input.
Pendampingan Penggunaan Perangkat Lunak CAD dalam Proses Perancangan oleh Juru Las di Desa Jaten Sukmaji Indro Cahyono; Triyono Triyono; Nurul Muhayat
E-Dimas: Jurnal Pengabdian kepada Masyarakat Vol 14, No 1 (2023): E-DIMAS
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/e-dimas.v14i1.6697

Abstract

Usaha bengkel las di Wilayah JatenKaranganyar sebagian besar mengerjakan kontruksi kecil hingga sedang. Kondisi sebelum program pengabdian masyarakat berjalan, gambar desain yang diinginkan konsumen hanya dibuat sket gambar manual seadanya tanpa mengukuti kaidah gambar teknik standar ISO dan tanpa melalui proses perancangan, sehingga estimasi biaya dan kebutuhan bahan hanya perkiraan saja. Selain itu dalam proses pembuatan produk, terjadi banyak kesalahan pengukuran sehingga pemotongan dan penggunaan bahan tidak effesien. Pendampingan pengenalan dan pelatihan penggunaan perangkat lunak CAD dalam mendesain dan merancang produk yang dikerjakan dengan proses pengelasan menjadi fokus utama PKM ini. Sasaran utama program pengabdian ini adalah juru las dan warga sekitar terutama warga lulusan sekolah vokasi/SMK untuk berkolaborasi dengan mengangkat studi kasus merancang dan mendesain pembuatan Gazebo masjid Fatimah Ar-Royyan Jaten karanganyar. Hasil dari kegiatan pengabdian ini adalah tumbuhnya minat warga yang ingin mempelajari dan menguasai pengoperasian perangkat lunak desain CAD. Evaluasi secara keseluruhan terjadi peningkatan interaksi antara mitra pembuat (juru las dengan Mitra konsumen) dengan adanya peresentasi visual gambar 3D maupun gambar teknik, dan terjadi efesiensi penggunaan bahan dan proses yang lebih baik. 
Load Capacity and Bending Strength of Double-Acting Friction Stir Welded AA6061 Hollow Panels Nurul Muhayat; Muhammad Budi Utama; Ericha Dwi Wahyu Syah Putri; Eko Prasetya Budiana; Aditya Rio Prabowo; Yohanes P. D. S. Depari; . Triyono
Civil Engineering Journal Vol 10, No 8 (2024): August
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2024-010-08-018

Abstract

Aluminum alloy hollow panels are essential components in both civil and mechanical structures, such as building floors or large vehicle platforms. They enhance rigidity while staying lightweight and conserving material volume. In its application, this panel must be joined using welding methods. One common issue encountered in aluminum welding is the formation of porosity defects. Solid-state welding methods like Friction Stir Welding (FSW) can be a solution to address this problem. The FSW joining process on hollow panels cannot be completed in one welding operation due to their thickness. The FSW process must be performed on both surfaces, which requires a relatively long time. Therefore, FSW needs to be developed into a Double-acting FSW that utilizes two tools simultaneously. These two tools introduce two sources of heat input, pressing force, and friction-stirring, resulting in a novel response that needs further research. This study delves into the impact of welding speed variations in Double-Acting FSW on the load capacity and bending strength of AA 6061 hollow panel joints. Welding speeds of 20, 30, and 40 mm/min were tested alongside rotational speed (1500 rpm), tilt angle (2°), and shoulder diameter (24 mm). It was discovered that reducing welding speed enhances both load capacity and bending strength. Notably, specimens welded at 20 mm/min exhibited a load capacity of 15.61 kN and bending strength of 52 MPa, highlighting the potential of slower speeds for superior weld performance. Doi: 10.28991/CEJ-2024-010-08-018 Full Text: PDF
PELATIHAN PROSES GAS METAL ARC WELDING (GMAW) UNTUK TUKANG LAS SOLO RAYA Triyono; Nurul Muhayat; Eko Surojo
Abdi Masya Vol 7 No 1
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/abdimasya.v7i1.382

Abstract

There are numerous welding workshops in Solo, but they mostly offer similar products such as household items like fences, canopies, and window grilles. These products are customized, leading to inconsistent production levels—sometimes with high demand, other times quiet periods. To sustain these workshops, it's crucial to innovate both products and marketing strategies. Products like office, campus, and school furniture are consistently in demand. To compete effectively, workshop products need to improve in quality through advanced welding technology, particularly Gas Metal Arc Welding (GMAW). Therefore, workshops require training in using sophisticated equipment like GMAW machines. In the Community Partnership Program (PKM), the PKM UNS team collaborates with two partners: Sumber Rejeki Welding Workshop in Dusun Sawahan and the Takmir of Fatimah Ar-Royyan Mosque. The program unfolds in two phases. Phase I involves training workshop owners and workers in GMAW machine operations, with the PKM UNS team providing expertise. Phase II includes a joint project to create desk and chair furniture as demonstration products from the training, which will be donated to the TPA of Fatimah Ar-Royyan Mosque in Jongkang. This PKM initiative aims to equip owners and workers from Sumber Rejeki Welding Workshop and nearby workshops with skills in designing structures and manufacturing office furniture using GMAW, as well as effectively marketing these products.
PENINGKATAN EFISIENSI TATA LETAK RUANG PRODUKSI PADA IHRISH CREATIVE STUDIO MELALUI PENDEKATAN ERGONOMI DAN LEAN MANUFACTURING Triyono Triyono; Rizki Dwi Ardika Rizki; Eko Surojo; Nurul Muhayat; Teguh Triyono; Sukmaji Indro Cahyono
ADIMAS Jurnal Pengabdian Kepada Masyarakat Vol 10 No 1 (2026): Maret 2026
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/adimas.v10i1.12675

Abstract

This study aims to improve the efficiency of production space at Ihrish Creative Studio through an ergonomics and lean manufacturing approach. The study was conducted using direct observation, interviews, workflow analysis, and redesign of the production layout. The implementation results showed a reduction in production material movement time from an average of 14 minutes to 5–6 minutes. This increase in efficiency resulted in an increase in daily production output of up to ±30%, as well as a reduction in operational costs through time and energy savings. The application of ergonomic principles also increased comfort and safety at work, as demonstrated by positive feedback from workers. In addition, the new layout also strengthened the studio's social function as a training and community empowerment center. This study confirms that the integration of ergonomics and lean manufacturing is effective in addressing space limitations in micro-enterprises, while strengthening operational and social sustainability.
Design Analysis and Structural Prediction of Bus Driver Chair Support: A Study Case using HOQ and FEM Joung Hyung Cho; Ridwan Ridwan; Rama Panji Kusuma; Joko Triyono; Nurul Muhayat; Aprianur Fajri; Fajar Budi Laksono
Mekanika: Majalah Ilmiah Mekanika Vol 22, No 1 (2023): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v22i1.44371

Abstract

The bus driver's comfort is crucial. The location of the driver's seat, which is correlated with the seat support design, is one of the elements supporting his comfort. By considering the safety factor, House of Quality (HOQ), weight, shape, and seat support dimensions, this study intends to ascertain how the characteristics of the bus seat support form after receiving a load or force. Conducting a field visit to gather the necessary data was the initial step in this research. The following stage was to decide on the design criteria based on the collected data. Next, use SolidWork to model the design. Using the Finite Element Method (FEM), this program can investigate design characteristics. The loading simulation under consideration included clutch engagement, bus brake application, and clutch engagement, whether the support was static or stationary. The validation with two supporting journals was then run as the following step to validate the findings. According to the study's findings, the constant chair support fulfills the typical value, whereas Support 1 was the most fracture-prone. The outcomes of Supports 2 and 3 demonstrated that the support strength was weak since it was subjected to an unequal load.
Frictional Characterization Of Grey Cast Iron Train Brake Block Using A Reduced Scale Dynamometer Bernardus Prasetya Utama; Herru Santoso Budiono; Eko Surojo; Nurul Muhayat
Mekanika: Majalah Ilmiah Mekanika Vol 21, No 1 (2022): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v21i1.48246

Abstract

The brake block is an essential component that slows down and stops the train. The safety of this transportation is very dependent on the reliability of this component. One of the essential features of the brake block material is the coefficient of friction. The coefficient of friction of the brake block material should fulfill the requirements. The coefficient of friction of a material is measured using a friction test. Many friction testing methods have been developed to study the characteristics of friction materials. In contrast to previous studies, in this study, the frictional characteristics of gray cast iron brake blocks were evaluated using a reduced scale dynamometer. The friction test is carried out by pressing the brake block specimen to the surface of the rotating wheel. The specimen size of the brake block and carriage wheels is reduced to ¼ of the original size. The friction test is carried out at a contact pressure of 0.15, 0.20, 0.25, and 0.30 MPa and the friction speeds of 3, 6, 9, and 12 m/s. This study indicates that the coefficient of friction of the gray cast iron brake block decreases with increasing sliding speed and contact pressure.
Co-Authors . Triyono Aditya Rio Prabowo Alvia Restu Putra Utama Aprianur Fajri Ari Prasetyo Ari Prasetyo Bernardus Prasetya Utama Budy Nugroho Ciptadi Natawiguna D. D. Dwi Pria Tjahjana Dany Taufiq Alim Ansori Dody Ariawan Eko Prasetya Budiana Eko Surojo Eko Surojo Ericha Dwi Wahyu Syah Putri Fajar Budi Laksono Fajar Budi Laksono Gilang Sigit Saputro Hafidh Rawi Mufti Hammar Ilham Akbar Herru Santosa Budiono Herru Santoso Budiono Ilham Habibi Imam Abdul Majid Januar Tri Prasetyo Joko Triyono Joung Hyung Cho Kuswardi, Yemi Lenggana, Bhre Masa'id, Aji Mazlan, Saiful Mustakim Mustakim Nurwijayanti Rama Panji Kusuma Ridwan Ridwan Rizal Akhmad Bukhori Rizki Dwi Ardika Saifudin Sigit Edy Purwanto Sukmaji Indro cahyono Sukmaji Indro cahyono Syamsul Hadi T Triyono T Triyono Taufik, Ikhwan Teguh Muttaqie Teguh Triyono Teguh Triyono Titis Srimuda Pitana, Titis Srimuda Triyono Triyono . Triyono . Triyono Triyono Triyono Triyono Triyono Triyono Triyono Triyono Ubaidillah Wahid Ramadhan Wibowo Wibowo Wibowo, Wibowo Yohanes P. D. S. Depari Yupiter HP Manurung