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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin SITEKIN: Jurnal Sains, Teknologi dan Industri Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Turbo : Jurnal Program Studi Teknik Mesin Agritech: Jurnal Fakultas Pertanian Universitas Muhammadiyah Purwokerto Jurnal Indonesia : Manajemen Informatika dan Komunikasi Jurnal Sains dan Teknologi Jurnal Pendidikan, Sains dan Teknologi Jurnal Sains, Teknologi dan Rekayasa (SAINTESA)
Widyantoro Widyantoro
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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Comparison Analysis of Rula Scores on Improvement Workplace Design in Concrete Brick Manufacturing SMEs Nugraha, MH; IR, Anes; Widyantoro, Widyantoro; Rohman, Abd; Kostaman, Tata
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 20, No 2 (2023): June 2023
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v20i2.21282

Abstract

Paving block is constructions material usually used for form wall on building or construction jobs. Quality C dan D paving block manufacture on SMEs Scale in Tasilkmalaya Village does not have proper workplace design so that molder operator work in squat position. Squat position in manufacture paving block process is increasing RULA Score and ergonomic risk for musculoskeletal disorder (MSDs). In previous research, improvement has been applied to workplace, it has successfully increased productivity, but it is not sure can decrease ergonomic risk musculoskeletal disorder (MSDs) and RULA Score. This research aim to identify and compare the RULA Score before and after improvement. Analysis methods is used Rapid Upper Limb Assessment (RULA) with CATIA on moves element which has break down with Theblig methods. The result of research is workplace improvement has successfully decreased levels of ergonomic risk 43%.
Perbandingan Perancangan Sistem Kerja Manual Ball Valve Dan Motor Operated Valve Pada Sistem Peyiraman Pada Pertanian Bayam Widyantoro, Widyantoro; IR, Anes; AM, Randi
Jurnal Sains dan Teknologi (JSIT) Vol. 2 No. 3 (2022): September - Desember
Publisher : CV. Information Technology Training Center - Indonesia (ITTC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jsit.v3i1.548

Abstract

water spinach Kale is a nutritious food. The Association of Farmers Groups (GaPokTan) Mekar Jaya Mandiri in Cikupa Village, Karang nunggal, has agricultural land planted with watercress as the main source of income. Watering the water spinach plantations is carried out using a piping system with the distribution of water divided into two groups of blocks which is carried out by adding two ball valve mechanisms as a distribution system. The addition of 2 ball valves created problems for the operator. The work cycle when adding two ball valves is 12 body positions in operating the valve, including walking towards the valve, standing straight, and bending when opening or closing the valve. Walking and bending when opening or closing the ball valve takes a long time. Productivity was increased by developing two ball valves with an automatic valve system called the Motor Operated Valve (MOV). MOV uses an albino program for its operating system, and the operator controls M0V via cell phone. Comparison of work cycles between ball valves and those using MOV. The working time cycles for the redesigned operator open and close the valve is 63 seconds with 12 movements. The longest time is walking towards the valve, which is 16 seconds. After the redesign, the operator only needs a cell phone to operate the valve application so that the movement goes to the valve is 0 seconds, and the work cycle time after the redesign is 6 seconds
Evaluasi Struktural Rancangan Dongkrak Ulir sebagai Alat Pengangkat pada EV Maung Galunggung Menggunakan Analisis Elemen Hingga toro, Widyan
TURBO [Tulisan Riset Berbasis Online] Vol 14, No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i2.4586

Abstract

Penelitian ini bertujuan merancang dan menganalisis kekuatan struktur dongkrak ulir sederhana yang digunakan untuk mobil listrik Maung Galunggung dengan jarak rendah antara tanah dan rangka bawah sebesar 15 cm. Perancangan dilakukan menggunakan perangkat lunak CAD, sementara analisis kekuatan struktur dilakukan melalui metode Finite Element Analysis (FEA) berbasis Computer Aided Engineering (CAE). Model 3D dongkrak meliputi komponen batang ulir, tuas penggerak, dan penopang, dengan material st 37 yang mempunyai yield stress sebesar 225 Mpa. Simulasi dilakukan untuk mengetahui distribusi tegangan Von Mises, displacement material, dan faktor keamanan pada kondisi pembebanan sebesar 1 ton. Hasil analisis menunjukkan tegangan maksimum sebesar 0,5348 MPa, jauh di bawah batas elastis material, dengan displacement material  maksimum hanya 6,163 × 10⁻⁴ mm pada bagian top plate. Faktor keamanan maksimum mencapai 15, menunjukkan kekuatan struktur sangat tinggi terhadap beban yang diberikan. Nilai ini mengindikasikan desain aman digunakan, meskipun terdapat potensi overdesign yang memungkinkan optimasi material untuk efisiensi biaya dan berat. Penelitian ini diharapkan menjadi acuan bagi pengembangan desain dongkrak yang lebih efisien, andal, dan aman, sekaligus memberikan kontribusi bagi industri otomotif dalam penyediaan peralatan kerja yang mendukung keselamatan dan produktivitas
Co-Authors Abd Rohman Abd Rohman, Abd Adhy, Dewanto Rosian AM, Randi Anes Inda Rabbika Asep Mustofa Deden Junaedi, Deden Dyah Subositi Indratiningsih Indratiningsih IR, Anes Kostaman, Tata Luthfi, Ajie M MF, Willy Mia Sumiarsih Mochamad Irlan Malik Muhammad Hanhan Nugraha Mustofa, Asep Nugraha, MH Nurul Husniyati Listyana Nurwahid, Nurwahid Putri Adi Pertiwi rabbika, anes inda Rachmanto Hadiputranto Tatakostaman Tri Jaya Widagdo Wahudin, R.P Widagdo, Tri Jaya Widodo Widodo Willy Muhammad Fauzi