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Program Studi Sarjana Terapan Teknik Mesin Produksi dan Perawatan, Jurusan Teknik MesinPoliteknik Negeri Sriwijaya, Palembang, Indonesia
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MACHINERY: Jurnal Teknologi Terapan
Published by Politeknik Negeri Sriwijaya
ISSN : 27233359     EISSN : 2776673X     DOI : https://doi.org/10.5281/zenodo.
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
MACHINERY Jurnal Teknologi Terapan was published by Mechanical Engineering Department, Politeknik Negeri Sriwijaya to disseminate in the form of technical and vocational research results of undergraduate (Sarjana Terapan) students of Mechanical Engineering in the fields of Machinery, Manufacturing, Metallurgy Sciences and Engineering, Design Engineering, Heavy Machine to academics, practitioners and students as well as interested parties. MACHINERY accepts article submissions written in Indonesian and welcoming in English. Determination of articles published in Machinery Jurnal Teknologi Terapan is through a review process by best partner of MACHINERY by considering, among others: fulfillment of the standard requirements of journal publications, research methods used, significance, and contribution to the results of research on technical and vocational in Mechanical engineering field study.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 126 Documents
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OPTIMALISASI NILAI AKURASI PEMOTONGAN AKRILIK BERWARNA MENGGUNAKAN CNC LASER CUTTING DIODA 15 WATT Ramadhan, A.; Sairul Effendi; Almadora Anwar Sani
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 1 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15234349

Abstract

In this study, a 15 watt diode laser cutting was used to cut black acrylic material with a thickness of 2 mm. In cutting black acrylic, cutting parameters are required to obtain optimal cutting results, so to obtain optimal parameters, a quantitative method is used with the Larger Is Better characteristic taguchi method approach. There are 3 factors used for cutting parameters, namely laser power (%), cutting speed (mm / min) and nozzle distance (mm). The nozzle distance is a factor that has a significant effect on the results of cutting acrylic with P-Value = 0.000. The optimal cutting parameters for 2 mm acrylic thickness are laser power: 95%, cutting speed: 10 mm / min and nozzle distance: 50 mm with a cutting accuracy of 98.20%.  
ANALISA PENGARUH PENDINGINAN MENGGUNAKAN METODE KRIOGENIK DAN DROMUS COOLANT TERHADAP KEKERASAN DAN KEKASARAN PADA BENDA KERJA DI MESIN BUBUT Zurianti, Zurianti; Sundari, Ella; Anas, Adian Aristia
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 1 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15234420

Abstract

In this analysis, a quantitative research methodology is used to test which is better the roughness and hardness values of both cryogenic and dromus coolant cooling methods for the manufacture of chuck locks on lathes with AISI 1045 steel material. As well as using the ANOVA analysis method to process the results. And from the results of the measurement using the Surface Roughness Tester roughness test tool carried out, can be concluded that the chuck lock made on a lathe using the cryogenic cooling method has a smaller roughness value, namely at the N7 level, while the dromus coolant method at the N9 level according to the ISO or DIN 4763:1981 roughness standard, which means that the chuck lock that goes through the cooling process with the cryogenic method can produce a smoother surface than the surface that using the Dromus Coolant cooling method. And from Vickers testing can be concluded that cooling with the liquid nitrogen cryogenic method can increase the hardness of the chuck lock with AISI 1045 steel material, namely dromus coolant (10.62%) and cryogenic (14.64%).
ANALISIS PENGARUH VARIASI SUHU DAN BAHAN BAKU KARBON AKTIF PADA SISTEM INSTALASI AIR BERSIH Radjiq, Ahmad; Gunawan, Indra
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 1 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15234445

Abstract

This research analyzes the effect of temperature variations and activated carbon raw materials on clean water installation systems using brackish water as raw material. Water is a vital basic need, but the availability of clean water is still a problem in many areas. To overcome this, this research carried out a filtering process to process brackish water into clean water. Variations in temperature and types of active carbon raw materials, namely coconut shells and coal, were tested to determine the most optimal conditions in the filtering process. The research results showed that the quality of brackish water before and after the filtering process experienced significant changes. The effect of variations in temperature and type of raw material on the performance of activated carbon in filtering brackish water was tested using physical parameters (turbidity, taste, color, TDS) and chemical parameters (pH, Fe metal content). This research succeeded in finding the right temperature and active carbon raw materials to produce quality clean water, providing benefits to local communities by increasing the availability of clean water that is safe and suitable for consumption. The benefit of this research is that it provides practical solutions for processing brackish water into clean water and increases awareness of the importance of maintaining water quality for health. It is hoped that this research can become a reference for further research and implementation of similar technology in other areas that face similar problems. Keywords : Temperature, Activated Carbon, Water, Installation
PENGARUH FRAKSI MASSA SERAT DAUN NANAS DAN SERAT KACA TERHADAP KEKUATAN KOMPOSIT SEBAGAI MATERIAL ALTERNATIF BUMPER MOBIL Lintang, Kemas Arif Ramadhan Lanang; Firdaus , Firdaus; Azharuddin, Azharuddin
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 1 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15242180

Abstract

In 2022, Indonesia produce 3.2 million tons of pineapples. Besides the fruit, pineapple leaves can be used as composite materials. Combining pineapple leaf fibers with glass fibers offers a potential high-strength material. This study examines how different mass fractions of these fibers affect composite strength for car bumper alternatives. The highest tensile strength (116.40 MPa) was found in a specimen with 18.52 g Pineapple Leaf Fiber, 43.89 g Glass Fiber, 38.70 g Epoxy, and 18.14 g Hardener. However, the T-test showed no significant effect of mass fraction on tensile strength (0.123 > 0.05). For flextural strength, the highest value (136.45 MPa) was in a specimen with 11.25 g Pineapple Leaf Fiber, 26.67 g Glass Fiber, 23.52 g Epoxy, and 11.02 g Hardener, with no significant effect of mass fraction (0.784 > 0.05). The highest impact strength (57.61 kJ/m²) was found in a specimen with 9.36 g Pineapple Leaf Fiber, 22.18 g Glass Fiber, 19.56 g Epoxy, and 9.17 g Hardener. Unlike the other tests, the mass fraction significantly affected impact strength (0.001 < 0.05).
Pengembangan Alat Praktikum Fisika Gaya Gesek Pada Bidang Miring Berbasis Internet of Things Zulensi, Fisabilillah Caudilo; Anas, Adian Aristia; Wilza, Romi; Sundari, Ella; Rizal, Syamsul
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 1 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15234480

Abstract

Friction Force on An Inclined Plane (FFIP) is one of the important chpaters in physics courses. This study aims to develop and determine the performance of the lab physics lab based on the Internet of Things (IoT). This research method uses qualitative method and experimental approach. This physics lab is afterward compared to theoretical calculations from the FFIP formula by using tests at 3 inclined plane’s angles of 30o, 45o, and 60o, as well as at 2 distances of 40 cm and 70 cm. The data were analyzed using ANOVA of simple linear regression to obtain the level of accuracy and the relationship between the inclined plane’s angles and the distance towards the kinetic friction coefficient of the test objects. The results of the study shows that the development of the lab physics FFIP IoT-based has very decent performance as long as the error percentage (average) is 4.77% or less than 10% as well as the level of accuracy (average) is 95.23%. The results of the analysis showed that the inclined plane’s angles have a significant effect towards the kinetic friction coefficient of the test objects. On the other hand, the distance barely has no effect towards the kinetic friction coefficient.
Analisis Modifikasi Pipa Penukar Panas pada Alat Distilasi Biodiesel Safputra, Ravi Pratama; Firdaus, Firdaus; Azharuddin, Azharuddin
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 1 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.15234502

Abstract

This study analyzes the effect of condenser design variations on the yield and efficiency of biodiesel production in a distillation apparatus. The condenser tube was modified with different shapes but maintained an identical cross-sectional area. The distillation results were analyzed using T-tests in SPSS to evaluate parameters such as effectiveness, production efficiency, cetane number, flash point, fire point, and water content. The findings revealed that the spiral condenser is more effective in enhancing efficiency and biodiesel quality compared to the straight condenser, showing higher cetane numbers, yields, and overall effectiveness. However, the water content did not significantly differ between the two condenser designs. In conclusion, the spiral condenser is superior in supporting the biodiesel distillation process, although the water content remains similar across both condenser types
ANALISIS ERGONOMI POSISI PENGEMUDI MOBIL MINI PARIWISATA UNTUK MENINGKATKAN KENYAMANAN DAN KEAMANAN MENGGUNAKAN METODE REBA Prayogo, Andika Lady; Umar, Mega Lazuardi; Finali, Asmar; Hanafi, Agung Fauzi; Yudha, Igna Satria Prasetya Darma
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 3 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36257/machinery.v6i3.10651

Abstract

Di Indonesia saat ini, transportasi merupakan komponen utama dalam membantu masyarakat bepergian. Tujuan penelitian ini diharapkan dapat ditemukan solusi untuk meningkatkan keamanan dan kenyamanan pengemudi mobil mini pariwisata, dapat memberikan kontribusi dalam pengembangan desain kendaraan yang lebih memperhatikan aspek ergonomis. Metode analisis REBA (Rapid Entire Body Assessment) digunakan untuk menghitung dan menganalisis semua bagian tubuh manusia dengan melihat hasil nilai skor akhir. Dari hasil analisis ini dapat disimpulkan bawasannya untuk kursi pengemudi dari berbagai tipe dengan perbedaan sudut punggung dan tinggi kursi, pada postur kerja pengemudi dengan kursi tipe 1, 3, dan 4 menghasilkan skor akhir REBA adalah 3, adapun postur kerja pengemudi dengan kursi tipe 2 menghasilkan skor REBA adalah 4. Maka di perlukan analisis lebih lanjut untuk mencari yang terbaik mengenai variasi sudut punggung 105o dan 95o, dengan tinggi 30 cm dan 40 cm kursi pengemudi mobil mini pariwisata tipe 1, tipe 3, dan tipe 4.
Perancangan Ulang Saringan Vibration Sieve untuk Pengolahan Limbah Padat: Studi Kasus di PT ABC Enggita, Asadian Puja Enggita; Kurnia, Ganjar; Darmawan, Daffa Athalla
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 3 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36257/machinery.v6i3.10807

Abstract

Effective solid waste management is essential to support industrial operations and environmental sustainability. PT ABC faces obstacles in the solid waste screening due to the less-than-optimal performance of the Vibration Sieve, especially in handling additive-lime and masterbatch-resin. This study aims to evaluate the performance of the tool before and after the redesign of the filter, as well as to determine the appropriate filter specifications for each type of waste. The method used is a quantitative approach through observation, measurement, and performance testing of the tool. The results show that a filter with a hole diameter of 6 mm is effective for additives and lime, while a 3 mm filter is effective for masterbatch and resin. After modification, the weight of the filtered waste increased from 3.26 kg to 16.97 kg. This modification has been shown to increase filtering effectivity and reduce waste
The Pengaruh Sudut Kemiringan Kaca Terhadap Performa Distilator Surya Alit, Ida Bagus; Made Wirawan
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 3 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36257/machinery.v6i3.10916

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh variasi sudut kemiringan kaca penutup terhadap efisiensi kinerja distilator surya. Variasi sudut yang digunakan adalah 35°, 40°, dan 45°, dengan parameter utama yang diamati berupa jumlah air distilasi yang dihasilkan serta efisiensi termal sistem. Metode yang digunakan bersifat eksperimental, dengan distilator tipe basin tunggal yang diuji di bawah kondisi radiasi matahari alami. Hasil penelitian menunjukkan bahwa sudut kemiringan kaca berpengaruh terhadap performa distilator. Pada sudut kemiringan 35°, distilator menghasilkan volume air distilasi paling tinggi dibandingkan dua sudut lainnya. Efisiensi termal juga mencapai nilai maksimum pada sudut ini, menunjukkan bahwa posisi kaca yang lebih landai memungkinkan penyerapan dan kondensasi panas yang lebih efektif. Sebaliknya, pada sudut 40° dan 45°, terjadi penurunan output distilasi dan efisiensi. Hal ini didugadisebabkan oleh peningkatan sudut pantul radiasi matahari dan penurunan penyerapan energi oleh air dalam bak. Kesimpulan dari penelitian ini adalah bahwa sudut kemiringan kaca sebesar 35° memberikan performa optimal bagi distilasi surya dalam kondisi geografis dan iklim tempat penelitian dilakukan.
ANALISA KEBOCORAN SAMBUNGAN LAS PIPA SANITARY SS 316L YANG DI RENDAM DALAM LARUTAN PH 4 Oktariady, Muhammad; M. Rasid; Ella Sundari
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 3 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36257/machinery.v6i3.10569

Abstract

This study aims to analyze the cause of leakage in SS 316L sanitary pipes used for food additive distribution. The leakage is suspected to be caused by corrosion due to exposure to the acidic environment. The research was conducted experimentally using 12 samples subjected to different treatments: no welding, argon welding, and electric welding using NSN-309L/E 309-16 and NSN-316/E 309-16 electrodes. All samples were immersed for 24 hours in a pH 4 solution and tested using the gravimetric method to measure mass loss due to erosion. The results showed that pH 4 acid solution significantly caused mass reduction in the pipes, with the highest erosion occurring in electric welding joints. The highest erosion percentage, 2.99%, was found in samples welded with NSN-309L/E 309-16 electrodes, while unwelded samples experienced only 0.21% erosion. The validity of the data was tested and confirmed based on the comparison between the calculated r-value and the critical r-table value. The conclusion indicates that the welding method influences the pipe’s susceptibility to corrosion, with electric welding posing a higher risk than argon welding in acidic environments.

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