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All Journal Semesta Teknika JMPM (Jurnal Material dan Proses Manufaktur) JRST (Jurnal Riset Sains dan Teknologi) Prosiding Seminar Nasional Sains dan Teknologi Terapan JURNAL CRANKSHAFT Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Otopro Scientific Journal of Mechanical Engineering Kinematika Journal of Mechanical Engineering, Science, and Innovation Prosiding Seminar Nasional Teknologi Industri Berkelanjutan The Journal of System Engineering and Technological Innovation AMMA : Jurnal Pengabdian Masyarakat Journal of Science and Social Development Jurnal Polimesin
Miftahul Ulum
Universitas Qomaruddin
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing

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ANALISIS TEGANGAN SECARA STATIS DAN DINAMIS PADA POROS TRUK PENGANGKUT RINGAN MENGGUNAKAN METODE ELEMEN HINGGA Muhammad Fakku Ilham Firmansyah; Ahmad Anas Arifin; Eka Marliana; Miftahul Ulum
Scientific Journal of Mechanical Engineering Kinematika Vol 10 No 1 (2025): SJME Kinematika Juni 2025
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v10i1.712

Abstract

The purpose of this study is to determine the structural failure that occurs in the propeller shaft model of light duty vehicles with FCD450-10, SM45C, and SCM440 material types due to static and dynamic loading. This research was conducted using a simulation-based finite element method on software. The results of static FEM simulations show that each material has its own characteristics. Based on the static stress analysis that has been carried out, the results are obtained that the FCD450-10 material is stated to be in the best condition among other materials with the smallest equivalent stress value, which is 0.34203 MPa, and has the lowest minimum shear stress value of 0.19294 MPa. The best maximum total displacement value was obtained in SCM440 material, with the smallest value of 8.3405 mm. Based on the results of the Random Vibration simulation on the directional deformation of the SCM440 material, it is stated that it is in the best condition among other materials, with the smallest maximum directional deformation value of 30.109 mm and at the equivalent stress the smallest maximum value obtained is 84,433 MPa
Performance evaluation of a laboratory-scale Pelton turbine under variable nozzle distance and valve opening Aini Lostari; Didik Sugiono; Miftahul Ulum; Umi Kulsum; Yudi Hartono
Jurnal Polimesin Vol 24, No 3 (2026): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i3.8200

Abstract

Pelton turbines are impulse turbines widely used in micro-hydro power systems operating under high-head and low-flow conditions. Their performance depends strongly on the quality of the water jet impacting the runner buckets, which is influenced by nozzle distance and valve opening. This study experimentally investigated the effects of nozzle distance (60, 70, and 80 mm) and valve opening (30°, 60°, and 90°) on the hydraulic power, turbine power, electrical power, and efficiency of a laboratory-scale Pelton turbine. Turbine rotational speed was measured using a tachometer, while voltage and current were measured using a multimeter to determine power output. The results showed that increasing the valve opening increased hydraulic, turbine, and electrical power due to higher flow rate and jet kinetic energy. However, the turbine efficiency showed non-linear behavior because it was influenced by the quality of the jet and the effectiveness of momentum transfer. The maximum turbine power of 10.52 Watts and electrical power of 10.58 Watts were obtained at a nozzle spacing of 80 mm and a valve opening of 90°. Meanwhile, optimum efficiency was achieved at a nozzle distance of 80 mm and a valve opening of 30%, indicating that optimum conditions do not always occur at maximum flow. The results of this study indicate that the combination of nozzle distance and valve opening significantly influences Pelton turbine performance and is important for optimizing laboratory-scale micro-hydro systems.
ANALISIS KEKUATAN MATERIAL KOMPOSIT POLYESTER BERPENGUAT SERAT SISAL DAN SERBUK KAYU MAHONI DENGAN VARIASI FRAKSI VOLUME MATRIKS DAN REINFORCEMENT Yoga Ahdiat Fakhrudi; Imam Basuki; Miftahul Ulum
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16599

Abstract

The purpose of this study is to examine how changing the volume percentage of sisal fiber and mahogany wood powder composites can improve their mechanical qualities. The hand lay-up method was used to create composites with a set resin volume fraction of 50% and varying volume fractions of sisal fiber and mahogany sawdust (30%:20%, 35%:15%, 40%:10%, 45%:5%, and 50%:0%). The tensile test (ASTM D638), bending test (ASTM D790), and impact test (ISO 179-1) were among the tests. According to the results, the best impact toughness (70.34 KJ/mm²) was achieved with a combination of 45% fiber and 5% powder. The composition with the maximum tensile strength (23.36 MPa), strain (0.041%), and elastic modulus (574.20 Pa) was 40% fiber and 10% powder; the composition with the highest bending strength (124.50 N/mm²) was 50% fiber and 0% powder. The best composition from the impact test—45% fiber and 5% powder—is used in this study's rearview mirror cover product.
Co-Authors Afira Ainur Rosidah Ahmad Anas Arifin Ahmad Yusuf I Ahmad Yusuf Ismail Aini Lostari Ali Khomsah Aloysius Doni Bramantyo Ardi Noerpamoengkas Arrizal Eka Putra Arya, Rizky Nur Bambang Setyono, Bambang Desmas Arifianto P Desmas Arifianto Patriawan Didik Sugiono Dwi Khusna Eka Marliana Ellys Kumala Pramartaningthyas, Ellys Kumala Febriansyah Sukma Pratama Firmansyah, M. Adie Frizka Vietanti Gatot Setyono Hakim, Ainul Hanif Darmawan Firmansyah Hasan Syafik M Hery Irawan Hery Irawan, Hery Iftika Philo Wardani Imam Basuki Imam Syarifuddin Lostari, Aini M Arif M Sulton Alqoroni Maulana, Hasan Syafik Michael Azzura Akbar Moh. Yusril Fahmi Muhammad Fakku Ilham Firmansyah Naguib Mahfoudz Novi Indah Riani Riani, Novi Indah Saif Muizzadin Wadaullah Suheni Susastro Susastro Syamsuri Talifatim Machfuroh, Talifatim Umi Kulsum Vega Viandi Prihantoko Vuri Ayu S Vuri Ayu Setyowati Yoga Ahdiat Fakhrudi Yoga Pamungkas Yudi Hartono Zain Lillahulhaq