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All Journal Jurnal Teknik Mesin Rekayasa Mesin Info-Teknik JURNAL PENGABDIAN KEPADA MASYARAKAT JOURNAL OF SCIENCE AND APPLIED ENGINEERING Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Jurnal Energi dan Teknologi Manufaktur Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Journal of Welding Technology Otopro JURPIKAT (Jurnal Pengabdian Kepada Masyarakat) Jurnal Pengabdian Polinema Kepada Masyarakat Jurnal Pengabdian dan Pemberdayaan Nusantara (JPPNu) Bulletin of Science Education Jurnal Pengabdian Kepada Masyarakat Journal of Mechanical and Electrical Technology Logic : Jurnal Rancang Bangun Dan Teknologi Jurnal Teknik Mesin, Industri, Elektro dan Informatika Asian Journal Science and Engineering Journal of Mechanical Engineering Venus: Jurnal Publikasi Rumpun Ilmu Teknik Journal of Evrimata: Engineering and Physics Journal of Community Engagement JK3UHO
Kris Witono
Jurusan Teknik Mesin Politeknik Negeri Malang
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SOLAR PANEL APPLICATION IN KOI SPAWNING PONDS FOR IMPROVED FISH FARMING PRODUCTIVITY IN TULUNGAGUNG Adiwidodo, Satworo; Asrori, Asrori; Witono, Kris; Fakhruddin, Muhammad; Pranoto, Bayu; Yudiyanto, Eko; Sulistyono, Sulistyono
Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Vol. 8 No. 4 (2024): DESEMBER
Publisher : LPPM Univ. Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/abdidos.v8i4.2484

Abstract

The Community Service (CS) program took place in Sumberingin Kidul Village, Ngunut District, Tulungagung Regency, approximately 100 km southwest of Malang City. The target group for this program includes small and medium enterprises (SMEs) engaged in koi fish spawning. Our partners face several challenges, primarily the reliance on aeration pumps powered by the national electricity grid (PLN) to supply oxygen to the ponds. The program aimed to install a 100 Wp solar panel system to generate clean energy for a low-voltage aeration pump, helping to maintain optimal oxygen levels in the pond and supporting healthy fish growth. The program successfully implemented this solar-powered aerator pump system in the pond area, providing an innovative, sustainable solution that empowers the community by integrating science and technology into fisheries. It is hoped that this program will inspire other fish farmers in Tulungagung and surrounding areas to adopt similar sustainable practices.
Pembuatan Grating Tahan Beban Truk Muatan Pasir atau Batu di Malang Hadi, Syamsul; Witono, Kris; Kasijanto, Kasijanto; Purwoko, Purwoko; Muqit, Abd.
JURNAL PENGABDIAN KEPADA MASYARAKAT Vol 15 No 2 (2025): Desember 2025
Publisher : LPPM UNINUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30999/jpkm.v15i2.3827

Abstract

Damage to the grating after being passed by heavy vehicles from trucks carrying hot asphalt during road repairs with asphalting of roads in residential areas is a problem faced. The purpose of community service is to obtain grating made of strong steel that can be passed by trucks loaded with stone or sand or asphalt with a full load and can be entered by rainwater and passed by heavy vehicles without sagging or damage, but can be opened and closed again if desired for cleaning or repairing water gutters. The method applied is a discussion with residents to determine the desired model design, make adequate gratings, install gratings, trials and modifications, and submit to the Head of RT 03 where the gratings are installed. With the installation of good gratings, it is hoped that the safety of residents or guest vehicles can be guaranteed in traffic in the area. Thus, there is synergy between the State Polytechnic of Malang (Polinema) and residents in order to realize safety in community life in RW 06 Tasikmadu, Lowokwaru, Malang City.
THE EFFECT OF THE ANGLE AND DIMENSIONS OF A CROSS-SECTION SPECIMEN ON THE TORSIONAL STRENGTH OF AISI 1020 SQUARE STEEL SHAFT Bima Cahya Maula Dana; Syamsul; Hangga Wicaksono; Kris Witono
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 24 No. 1 (2024): March
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v24i1.9-16

Abstract

The unknown torsional strength due to the inconsistency of the angles and dimensions of the square cross-section of AISI 1020 steel specimens in the torsion test is the problem encountered. The research method included: preparation of square AISI 1020 steel specimens measuring 6 mm x 6 mm x 160 mm, measurement of 2 diagonal angles of the cross section of the specimen and dimensions of the cross section at 5 observation points along the specimen receiving torsion loads, torsion testing of specimens, analysis of torsion test results data, and drawing conclusions. The results of the study affect the angle and dimensions of the specimen cross-section on the torsional strength of the AISI 1020 steel square shaft which has a greater value at the angles of 89o and 91o than 90o which with an angle of 89o at dimensions of 5.96 mm x 5.96 mm has a torsional strength of 412 MPa, while at an angle of 90o with dimensions of 5.96 mm x 5.96 mm it has a torsional strength of 359 MPa, and for an angle of 91o in dimensions of 5.95 mm x 5.95 mm has a torsional strength of 402 MPa. The average torsional strength is achieved in the range of 351 to 397 MPa, at an angle of 89o the torsional strength increases by 46 MPa or around 13.1 %, and at an angle of 91o the torsional strength increases by 43 MPa or around 12.3%.
Influence of MIG Welding Process Parameters on the Strength of Bimetal Joints: Study of Gas Flow Rate and Macrofractures Talifatim Machfuroh; Kris Witono; Septyana Riskitasari; Etik Puspitasari
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 24 No. 3 (2024): November
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v24i3.141-149

Abstract

Bimetal joints are often used in various industries, such as automotive, power generation, electronics, and manufacturing. This is because bimetal joints allow the joining of two types of metal with different properties. Welding two different types of metal can pose its own challenges, such as the difficulty of controlling welding parameters so that the results are optimal for both types of metal, as well as differences in the thermal and mechanical properties of the two metals. This has led to extensive research on bimetal plate connections. Based on this background, this research aims to determine the effect of variations in flow rate and current strength on the tensile strength of robotic welding bimetal welded joints, as well as determine the results of macro photos of fractures resulting from tensile tests for each variation. The research was carried out experimentally where each variation was repeated with data 3 times. Based on the results and discussion, it is known that the optimal gas flow rate in general is 20 l/min, where the tensile strength reaches 353.1442 MPa–455.5458 MPa. At this flow rate, the dominant fracture occurs in the base metal and is ductile, which indicates good plastic deformation. On the other hand, gas flow that is too low or too high causes joint defects and reduces the tensile strength. Meanwhile, other welding parameters, namely variations in welding current, affect tensile strength. At a gas flow of 10 l/min, increasing the current to 180 A produces the highest tensile strength of 449.4357 MPa with ductile fracture characteristics. However, at a current of 120 A there is a significant decrease due to overheating, especially at higher gas flows such as 20 l/min and 30 l/min, which results in brittle fracture in the heat-affected zone (HAZ). The results of this research contribute to the understanding of the influence of welding parameters on the tensile strength and fracture characteristics of bimetallic joints. This research can be a reference for the development of more efficient and reliable welding processes in various industries, such as automotive, power generation and manufacturing, which require bimetallic joints with optimal quality.
KESADARAN MAHASISWA TMPP TERHADAP KESELAMATAN DAN KESEHATAN KERJA SAAT PRAKTIK KERJA DI BENGKEL REKAYASA PRODUKSI PTV XX. Eko Yudiyanto; Kris Witono; Satworo Adiwidodo; Bayu Pranoto
Jurnal Kesehatan dan Keselamatan Kerja Universitas Halu Oleo Vol. 7 No. 1 (2026): Jurnal Kesehatan dan Keselamatan Kerja Universitas Halu Oleo (JK3UHO)
Publisher : Departemen K3 FKM Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37887/jk3uho.v7i1.230

Abstract

Kecelakaan merupakan permasalahan serius yang terus mengalami peningkatan dari tahun ke tahun, sehingga memerlukan perhatian khusus dalam implementasi Keselamatan dan Kesehatan Kerja (K3). Kesadaran tentang K3 diharapkan akan meningkatkan kewaspadaan dilingkungan kerja. Penelitian ini bertujuan untuk mengetahui tingkat pemahaman dan sikap peserta didik terhadap penerapan K3 di bengkel rekayasa produksi. Metode yang digunakan adalah deskriptif dengan teknik pengumpulan data melalui kuesioner dan observasi langsung terhadap 81 responden yang ditentukan menggunakan rumus Slovin. Pengambilan data dilakukan dengan random sampling yang memungkinkan selurun polulasi dapat menjadi responen. Hasil penelitian menunjukkan bahwa peserta didik sangat memahami terhadap pentingnya kesehatan dan keselamatan kerja, yang ditunjukkan oleh tingginya persentase pemahaman pada berbagai aspek, seperti kebersihan lingkungan kerja, penempatan peralatan, penggunaan alat tangan, serta pengoperasian mesin perkakas. Sebagian besar responden telah mampu mengidentifikasi potensi bahaya dan memahami prosedur kerja yang aman. Namun demikian, terdapat kesenjangan antara tingkat pemahaman dan penerapan sikap di lapangan. Beberapa peserta didik masih menunjukkan perilaku yang kurang konsisten dalam menerapkan prinsip K3, seperti penggunaan alat yang tidak sesuai atau kurang disiplin dalam prosedur kerja aman. Oleh karena itu, diperlukan upaya penguatan melalui pelatihan berkelanjutan, pengawasan yang lebih ketat, serta pembiasaan disiplin untuk membentuk budaya keselamatan kerja yang konsisten di lingkungan pendidikan teknik. Budaya disiplin K3 dan peraturan yang tegas diperlukan untuk menegakkan kepatuhan K3 untuk keselamatan bersama.
Fabrication of A Mushroom Planting Media Mixing Machine For Mushroom Farmers in Desa Gondowangi, Kecamatan Wagir, Kabupaten Malang Kris Witono; Nurhadi Nurhadi; Eko Yudiyanto; Talifatim Machfuroh; Satworo Adiwidodo; Rilis Eka Perkasa
Journal of Community Engagement Vol. 01 No. 02, (2025)
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/jce.vi.96

Abstract

White oyster mushrooms (Pleurotus ostreatus) represent a vital agricultural commodity and a major source of income for residents of Dusun Wiloso, Desa Gondowangi, Kecamatan Wagir, Kabupaten Malang. Despite their economic potential, the productivity of local mushroom farmers remains constrained by the conventional manual process of preparing baglog planting media, which involves mixing wood sawdust and rice bran. This traditional method is not only labor-intensive and time-consuming but also prone to inconsistencies that may damage the planting media and reduce overall yields. In response to these challenges, the Community Service Program (PPM) introduced an innovative training and technology transfer initiative focused on the design, fabrication, and utilization of a mushroom planting media mixing machine. This intervention effectively mechanizes the mixing process, thereby improving production efficiency, ensuring greater uniformity and quality of the planting media, and enhancing cultivation outcomes. Beyond its technical advantages, the program promotes local capacity building by expanding community knowledge in mechanical engineering and fabrication, fostering innovation, and stimulating entrepreneurial opportunities among local fabrication workshops. These workshops play a strategic role in sustaining the availability of appropriate agricultural technologies, supporting the continuous improvement of mushroom cultivation systems, and strengthening the region’s technological independence. Consequently, this PPM initiative not only addresses critical production bottlenecks but also contributes to broader goals of rural economic development, technological empowerment, and sustainable community self-reliance within Dusun Wiloso.
Developing Interactive Information Boards as Public Educational Media in Sumberingin Edu-Tourism Village, Tumpang, Malang Satworo Adiwidodo; Bagus Wahyudi; Pondi Udianto; Kris Witono; Asrori Asrori; Siti Duratun Nasiqiati Rosady
Journal of Community Engagement Vol 02, No 01, (2026)
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/jce.vi.133

Abstract

Sumberingin bathing area is one of the landmarks of Wringinsongo Village, Tumpang, Malang, with strong potential as a natural spring-based edu-tourism destination. Previous community service programs have supported this area through the installation of an Archimedes screw turbine micro-hydropower demonstration unit in 2022 and the development of Archimedes dye cafe in 2023, which combines natural tourism with science-based learning. However, the lack of supporting information media has limited visitors' understanding of the working principles and benefits of the mechanical demonstration tools. This community service program aims to strengthen public education facilities by developing and installing interactive information boards at cafe cepat archimedes. The method included identifying educational needs, designing the board layout and content, fabricating the information board, installing it in the tourism area, and integrating QR codes linked to digital learning materials. The information board was designed with ergonomic considerations to ensure clear readability and accessibility for children, students, and adult visitors. The result of this program is the availability of an interactive public information board that connects physical learning media with digital content, including a YouTube-based explanation of the Archimedes water turbine. This facility is expected to improve visitor learning experiences, increase the educational value of the tourism area, and support BUMDes in developing more innovative and sustainable edu-tourism services.
Analysis of The Cooling Spray System for Hot Pool Water With An Electricity Source from Solar Cells bambang irawan; Syamsul Hadi; Samsul Hadi; kris witono
Journal of Evrímata: Engineering and Physics Vol. 01 No. 01, 2023
Publisher : PT. ELSHAD TECHNOLOGY INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70822/journalofevrmata.vi.10

Abstract

This study discusses the cooling of water with a system of spraying it into the free air. The energy source to drive the pump uses energy from sunlight. This research is to solve a problem in an area where it is difficult to get water so that the water for the cooling process must be cooled so that it can be used for the next process. The second problem is that the electrical energy is very minimal, so you have to use other energy that can be used for the cooling process. The process of cooling the water spray system into the air was chosen to solve this problem. The tools used in this study were a 600 Wp solar cell, a 300 W water pump and a spray pipe. The research was conducted during the dry season in August. The research results show that the temperature of the water in the pool is not homogeneous the deeper the water in the pool the lower the temperature. The higher the pool water temperature, the longer the cooling time will be. The greater the pump discharge, the faster it will take to cool the pool water. Solar energy is able to supply energy to drive pumps with pool water temperatures up to 45 C. This cooling system can be used at night because it is equipped with batteries. The results of this research can be used and developed to create a larger system. This cooling system does not cause any impact on the environment because the energy source is from sunlight which is environmentally friendly.
Co-Authors Abd. Muqit Agus Hardjito Agus Harijono Agus Setiawan AGUS SETIAWAN Agus Sujatmiko Akhlis Rizza, Muhammad Akhmad Faizin Akhmad Faizin Akka Sunoko Amrullah, Miftahul Asrori Asrori Bagus Wahyudi Bambang Irawan BAYU PRANOTO Bayu Pranoto Bima Cahya Maula Dana Budi Eko Prasetyo Danang Risky Suhadi Dani, Agus Eko Yudiyanto Elka Faizal Elka Faizal Etik Puspitasari Etik Puspitasari, Etik Faizal, Elka Gumono Gumono Gunawan, Chandra Hadi Samsul Hadi Susilo, Sugeng Hangga Wicaksono Hangga Wicaksono Harie S Jaya Harijono, Agus Haris Puspito Buwono Heru Prasetyo Heru Suryanto Heryanto Heryanto Kasijanto Kasijanto Kasijanto, Kasijanto Lisa Agustriyana Listiyono Moh. Nasir Mohammad Noor Hidayat Muhammad Fakhruddin NASIR, MOH. Nurhadi Nurhadi Pipit Wahyu Nugroho Pondi Udianto Pranoto, Bayu Purwoko Purwoko Putu Wijaya Sunu R N Akhsanu Takwim Rahmad, Cahya Raihan Insan Nararya Ratna Monasari Rifa’i, Muhamad Rilis Eka Perkasa Riskitasari, Septyana Risno Bayu Riswan E.W. Susanto Riswan E.W. Susanto Robbi Malik Rudy Soenoko Sadar Wahjudi Samsul Hadi Sarjiyana Satworo Adiwidodo SEPTYANA RISKITASARI Siti Duratun Nasiqiati Rosady Subagiyo Subagiyo Sugeng Hadi Susilo Sugeng Hadi Susilo Sulistyono Sulistyono Syamsul Syamsul Hadi Syamsul Hadi Syamsul Ph.D M.A. Hadi Talifatim Machfuroh Talifatim Machfuroh Talifatim Machfuroh Talifatim Machfuroh, Talifatim Walid, Achmad Wicaksono, Hangga Yudy Surya Irawan Yuniarto Agus Winoko Zakki Fuadi Emzain