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JURNAL CRANKSHAFT
Published by Universitas Muria Kudus
ISSN : 26230720     EISSN : 26230755     DOI : -
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal ini merupakan sarana publikasi dan ajang berbagi karya riset dan pengembangannya di bidang teknologi. Jurnal Crankshaft terbit 2 kali dalam setahun, yaitu pada bulan Maret dan September.
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Articles 254 Documents
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STUDI KONVERGENSI MESH PADA RESPONS HANCUR NUMERIK STRUKTUR SANDWICH HONEYCOMB Kamil, Syahiir; Machmud, M. Nizar; Hasanuddin, Iskandar; Sabri, Faris Ahmad Mizanus; Adlie, Taufan Arif; Arif, Zainal
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.v9i1.16831

Abstract

In this research, finite element methods are utilized to investigate the mechanical behavior of aluminium honeycomb sandwich structures under out-of-plane compression. The structures were virtually compressed from the initial elastic regime until the plateau phase using explicit non-linear analysis modelling approaches. A mesh convergence study is conducted to ensure the accuracy and reliability of the simulation results, aiming to determine the optimal mesh size that balances precision with computational efficiency. An analytical equation for calculating the plateau force, or average crush load, along with experimental data from the study by Mertani, is used to validate the numerical results. The study concludes that a mesh size of 0.5 mm offers an ideal balance between accuracy and computational cost, yielding an error of 3.1%.
ANALISIS KINERJA MESIN PENCACAH SAMPAH DENGAN VARIASI KECEPATAN PUTAR MOTOR LISTRIK Siringoringo, Zebtomen; Pranoto, Sigiet Haryo; Nurrohkayati, Anis Siti; Sylvano, Ananda
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.v9i1.16840

Abstract

This study aims to analyze the effect of variations in the rotational speed of an electric motor on shredding capacity and the average size of shredded output in a plastic waste shredding machine. The method used is an experimental approach by conducting direct tests on a shredding machine using a single-phase electric motor with a power of 2 HP, with speed variations of 600 rpm, 900 rpm, and 1200 rpm. The test materials include plastic bottles, plastic bags, and cardboard, with a shredding time of 2 minutes for each test. The observed parameters include the mass of shredded material, shredding capacity (kg/h), and the average size of the shredded output. The results show that the highest shredding capacity for plastic bottles and plastic bags was achieved at a speed of 900 rpm, reaching 25.20 kg/h and 13.50 kg/h, respectively, while for cardboard material, the highest capacity was obtained at 600 rpm, reaching 28.59 kg/h. These findings indicate that increasing rotational speed does not always result in the highest shredding capacity for all materials, as the physical characteristics of the materials influence the shredding performance.
Flow Structures and Performance Characteristics of a Savonius Wind Turbine Under Varying Wind Speeds and Blade Angles Sari, Tria Puspa; Izzah, Anisah Nurul; Satria, Muhammad Hendra Budi; Lamura, M. Danny Pratama; Musyaroh; Shabrina, Dhia Fairuz
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.v9i1.16912

Abstract

Savonius wind turbines belong to the class of vertical-axis wind turbines (VAWTs) and are well known for the ability to self-start at low wind speeds without the need for yaw control. Despite these advantages, their aerodynamic efficiency remains lower than that of horizontal-axis wind turbines (HAWTs). In this study, the flow structures and performance characteristics of a Savonius wind turbine are examined using streamline visualization under varying wind speeds ranging from 8 to 10 m/s and blade angles between 100° and 130°. The Reynolds number variations reflect changes in the flow regime and momentum exchange caused by different wind speeds and blade orientations. Across all wind speeds, the 120° blade angle consistently resulted in the most favorable flow conditions. Streamline visualization highlights key flow features, including flow separation, vortex development, and wake structures, which play a critical role in determining aerodynamic efficiency and energy capture. By directly relating Reynolds number variations to observable flow phenomena, this study offers practical insights for aerodynamic optimization. The findings contribute to the development of more efficient Savonius wind turbine designs, particularly for applications in low to moderate wind environments.
PROSES MANUFAKTUR SPUR GEAR CUTTER MENGGUNAKAN MESIN FRAIS UNIVERSAL KNEE MILLING MODEL 57-3C Ratlalan, Roberth Marshall; Arhan, Muhammad
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.v9i1.16932

Abstract

Spur gears are essential components in power transmission systems and are widely used in various mechanical applications. As industrial needs evolve, the use of engineering polymer materials such as Teflon has become an attractive alternative due to their low coefficient of friction, good chemical resistance, low noise levels, and light weight. This study aims to study the manufacturing process for a Teflon (PTFE) spur gear cutter using a Knee Milling Machine Model 57-3C universal milling machine and to evaluate the resulting product's quality control methods. The method used involves several stages: gear dimension design, material and tool preparation, machining parameter settings, tooth formation using a modular milling cutter and dividing head, and finishing, spline groove creation, and threading. Quality control is performed through dimensional measurements using calipers and visual inspection to detect surface defects, cracks, and deformation caused by the cutting process. The results show that a Teflon spur gear cutter with 45 teeth and a module of 2.5 can be manufactured satisfactorily using a universal milling machine. All main dimensions measured are within a tolerance of ±0.20 mm, and no significant defects were found during visual inspection. This shows that the universal milling machine Knee Milling Machine Model 57-3C can be used effectively for manufacturing spur gears made of engineering polymers with an adequate level of accuracy. Keyword : Spur gear, Teflon (PTFE), Knee Milling Machine Model 57-3C, Dividing head, Quality Control.

Page 26 of 26 | Total Record : 254

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