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Timotius Anggit Kristiawan
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Journal of Mechanical Engineering and Applied Technology
Published by Politeknik Negeri Semarang
ISSN : -     EISSN : 30252725     DOI : http://dx.doi.org/10.32497/jmeat.v2i1
Core Subject : Engineering,
Automotive Engineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Journal of Mechanical Engineering and Applied Technology (JMEAT) provides online media to publish scientific articles from research and development in the field of Mechanical Engineering and Applied Technology. The scope of Journal of Mechanical Engineering and Applied Technology (JMEAT) is as follows: Manufacture Maintenance Automotive Renewable Energy Agriculture Health Mechatronics
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 66 Documents
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ANALISIS PERBANDINGAN KARAKTERISTIK FISIK MELALUI UJI KEKERASAN VICKERS PADA MATERIAL KOMPOSIT BERBASIS SERAT ALAMI DAN SERAT SINTETIS Hendi; Maulana, Muhammad Ikhsan; Patria, Suci; Adib, Adam Zuyyinal; Setiawan, Yudi
Journal of Mechanical Engineering and Applied Technology Vol. 3 No. 3 (2025): VOLUME 3 ISSUE 3 YEAR 2025 (NOVEMBER 2025)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v3i3.7158

Abstract

Composite materials have become highly important in the manufacturing industry. However, the development of composites often faces the challenge of finding effective, economical, and environmentally friendly reinforcing materials. This study aims to analyze the comparison of physical characteristics in composite materials reinforced with natural fibers through Vickers hardness testing and then compare these hardness values with composite materials reinforced with synthetic fibers. The Vickers hardness testing method adheres to the ASTM E348 microhardness testing standard. The results show that the addition of fibers to composite materials tends to increase the likelihood of voids or trapped air bubbles within the composite material, which increases its porosity value. Furthermore, the use of synthetic fibers, especially carbon fiber, is still superior to pineapple leaf fiber (PALF) because the hardness value of carbon fiber is indeed superior to other fibers. However, pineapple leaf fiber (PALF) has advantages in its stability, is more environmentally friendly, and has a lower production cost compared to synthetic fibers.
OPTIMASI PAREMETER PENGELASAN SMAW TERHADAP HASIL UJI TARIK MENGGUNAKAN METODE TAGUCHI PADA POSISI 3G Lukman, Muhammad; Hamid, Abdul; Nailul Ulum, Muhammad Showi
Journal of Mechanical Engineering and Applied Technology Vol. 3 No. 3 (2025): VOLUME 3 ISSUE 3 YEAR 2025 (NOVEMBER 2025)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v3i3.7178

Abstract

This research aims to optimize the Shielded Metal Arc Welding (SMAW) process parameters on tensile strength using the Taguchi method in the 3G welding position. The study investigates the effects of welding current, electrode type, and electrode soaking time on the quality of weld joints. The base material used was ASTM A36 steel, welded with E7016 and E7018 electrodes at current settings of 85 A and 95 A. The experimental design employed a Taguchi L4 (2³) orthogonal array, resulting in four parameter combinations. Performance analysis used the Larger is Better Signal-to-Noise (S/N) ratio approach. The optimum parameter combination was found at 85 A welding current, E7016 electrode, and 30 minutes of electrode soaking, achieving a maximum average tensile strength of 404.35 MPa. Analysis of Variance (ANOVA) revealed that the most influential factor on tensile strength was electrode soaking time (57.65%), followed by electrode type (32.38%), and welding current (9.97%). The absence of residual error indicates a highly efficient and reliable experimental model. This study confirms that the Taguchi method is an effective approach to optimize SMAW parameters, enhance weld joint quality, and minimize trial-and-error efforts in the welding process. Keywords: SMAW Welding, Tensile Test, Taguchi Method, 3G Position, Parameter Optimization, ANOVA.
PERFORMANCE TESTING OF SEAWATER DISTILLATION EQUIPMENT USING SOLAR POWER TO PRODUCE FRESH WATER Sepdianto; Kosasih, Khaecal Rabbil Izzati; Bakhri, Mohammad Samsul
Journal of Mechanical Engineering and Applied Technology Vol. 3 No. 3 (2025): VOLUME 3 ISSUE 3 YEAR 2025 (NOVEMBER 2025)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v3i3.7195

Abstract

Design is a stage that involves several systematic stages, ranging from basic calculations to the performance test process. In the process of making distillation equipment, after the fabrication process, a process of testing the performance of the tool is required. Where is the performance test process to find out if the tool is in accordance with the calculations made in the previous process. This study aims to determine the quality of water resulting from distillation which includes, TDS, odor, pH, and salinity. The test method used in this study is experimental by conducting a performance test of a distillation device that utilizes sunlight for 5 days with 5 liters of water tested (1 liter per day continuously) starting from 08.00 to 17.00 by making observations every 1 hour. The results of the equipment test show that the quality of the water produced from the distillation equipment has met the standards of the Indonesian Ministry of Health. No.2 of 2023, while for the highest freshwater productivity per day of 287 ml and the lowest 204 and for the highest distillation equipment performance with an efficiency value of 94.18% and the lowest efficiency of 86.75%. Keywords: Distillation; Solar Power; Sea Water; Quality
Front Matter Journal of Mechanical Engineering and Applied Technology, 3 (3) November 2025 Kristiawan, Timotius
Journal of Mechanical Engineering and Applied Technology Vol. 3 No. 3 (2025): VOLUME 3 ISSUE 3 YEAR 2025 (NOVEMBER 2025)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Back Matter Journal of Mechanical Engineering and Applied Technology, 3 (3) November 2025 Kristiawan, Timotius
Journal of Mechanical Engineering and Applied Technology Vol. 3 No. 3 (2025): VOLUME 3 ISSUE 3 YEAR 2025 (NOVEMBER 2025)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ANALISIS PENGARUH KETEBALAN IRISAN TERHADAP KUALITAS IRISAN DAN EFISIENSI WAKTU PENGIRISAN PADA MESIN PENGIRIS TEMPE Nouvaldy, Raditya Eka; Khoryanton, Ampala; Abidin , Zainal
Journal of Mechanical Engineering and Applied Technology Vol. 3 No. 3 (2025): VOLUME 3 ISSUE 3 YEAR 2025 (NOVEMBER 2025)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v3i3.7206

Abstract

The tempe processing industry plays a strategic role in food security and the local economy, especially within small and medium enterprises. However, productivity challenges remain, particularly in the slicing process, which impacts the quality and efficiency of production. This study investigates the effect of tempe slice thickness variation (2 mm, 3 mm, and 4 mm) on slice quality (categorized as intact and damaged) and slicing time using a specific performance cutting machine. It addresses the research gap where previous studies have not optimized the relationship between slice thickness and the drive motor performance of tempe cutting machines. The objective is to analyze the influence of slice thickness on quality, time efficiency, and motor performance. An experimental method was employed, varying slice thickness and measuring slice quality and cutting time using quantitative data analyzed descriptively and comparatively. Results showed a significant impact of slice thickness on both quality and time efficiency; 4 mm slices yielded the best quality with the highest intact slice percentage, whereas 2 mm slices resulted in the shortest cutting time. In conclusion, optimizing slice thickness and motor performance is essential to produce high-quality tempe slices with maximum time efficiency. These findings are significant for developing tempe slicing machine technology that enhances productivity and competitiveness for MSMEs.

Page 7 of 7 | Total Record : 66

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