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Ozkar F Homzah
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AUSTENIT
Published by Politeknik Negeri Sriwijaya
ISSN : 20851286     EISSN : 26227649     DOI : https://doi.org/10.53893/austenit
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
AUSTENIT (pISSN 2085-1286 and eISSN 2622-7649) is a peer-reviewed open access journal published by Mechanical Engineering Department, Politeknik Negeri Sriwijaya. Focused on original articles in the form of technical and vocational research results or literature review which provides insight in the field of mechanical engineering and machinery that includes Mechanical Structure, Manufacturing, Metallurgy Sciences and Engineering, Design Engineering, Maintenance and Repair Engineering, Fluid Dynamics, HVAC (Heating, Ventilation and Air Conditioning), Heat-Mass Transfer, Sustainable Renewable Energy, Mechatronic and Control Systems or as well as other related Mechanical Engineering field study.
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Articles 232 Documents
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RANCANG BANGUN ATTACHMENT CYLINDRICAL GRINDING PADA MESIN BUBUT DAN EVALUASI KEKASARAN PERMUKAAN POROS BAJA ST 37 Muhammad Ikram Kido; Tri Agus Susanto; Haedar Bahri; Sultan Muhammad Shaleh; Ervin Huzaedi
AUSTENIT Vol. 18 No. 1 (2026): Austenit: April 2026
Publisher : Politeknik Negeri Sriwijaya, Indonesia

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Abstract

Conventional lathe machining processes often produce inadequate surface finish quality, which may cause difficulties during component assembly. This study aims to improve the surface roughness (Ra) of ST 37 steel shafts through the design and implementation of a cylindrical grinding attachment mounted on a conventional lathe machine. The research methodology consisted of the design, fabrication, and assembly of the attachment, followed by experimental testing. Grinding experiments were conducted at a constant spindle speed of 1500 rpm with two feed rate variations, namely 0.062 mm/min and 0.079 mm/min. Surface roughness measurements were performed using a surface roughness tester to evaluate the effectiveness of the developed system. The experimental results indicate that a feed rate of 0.062 mm/min produced an average surface roughness of Ra 2.212 μm, whereas a feed rate of 0.079 mm/min resulted in Ra 2.724 μm at the same spindle speed. The findings demonstrate that reducing the feed rate significantly improves surface finish quality. Therefore, the developed cylindrical grinding attachment is effective in enhancing the surface characteristics of ST 37 steel shafts.
Study of the Power Output of a Thermoelectric Generator (TEG) Prototype in Utilizing Asphalt Heat through Variations in Copper Plate Thickness as a Heat Conductor Ike Bayusari; Anggun Ismeriyanti Putri; Ayu Soraya; Caroline; Hermawati; Rahmawati
AUSTENIT Vol. 18 No. 1 (2026): Austenit: April 2026
Publisher : Politeknik Negeri Sriwijaya, Indonesia

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Abstract

Asphalt, as a key infrastructure element, absorbs solar heat and can be utilized as a renewable energy source through Thermoelectric Generator (TEG) technology, which converts temperature differences into electrical energy. This study evaluates the performance of a TEG system equipped with copper plates high thermal conductivity heat conductors with varying thicknesses of 1 mm, 2 mm, and 3 mm. The highest average values of ∆T, voltage, current, and output power for the 1 mm copper plate were 6.12 °C, 349 mV, 2.973 A, and 1037.58 mW, respectively. For the 2 mm plate, the values were 7.39 °C, 294 mV, 3.196 mA, and 939.62 mW, while the 3 mm plate yielded 7.56 °C, 363 mV, 1.928 A, and 699.86 mW. The results suggest that the 2 mm copper plate provides the most optimal configuration to enhance TEG performance without inducing excessive thermal resistance, thereby delivering the highest overall current and power output.

Page 24 of 24 | Total Record : 232

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