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All Journal Journal of Mechanical Science and Engineering Jurnal Rekayasa Mesin AUSTENIT Simposium II UNIID 2017 Indonesian Journal of Engineering and Science (IJES) Calamity: A Journal of Disaster Technology and Engineering Jurnal Pelita Sriwijaya
Hendri Chandra
Pengajar Pasca Sarjana Jurusan Teknik Mesin Fakultas Teknik Universitas Sriwijaya
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Journal : AUSTENIT

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INVESTIGATION OF STRESS ON MULTI-LEVEL SHAFT USING FINITE ELEMENT METHOD BASED ON COMPUTER-AIDED ENGINEERING Chandra, Hendri; Putra, Dicky Pratama; Romli, Romli
AUSTENIT Vol. 13 No. 1 (2021): AUSTENIT: April 2021
Publisher : Politeknik Negeri Sriwijaya, Indonesia

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Abstract

The shaft is a rod that is part of the engine element with a circular cross-section that functions to move rotation without continuing power. Research on the stress concentration factor on the shaft continues to be developed significantly to mitigate torsional loads, bending loads, and axial loading. This study investigates the stress on a multilevel shaft using three methods: the engineering design method, simulation method, and analysis using the finite element method to obtain the investigated stress value based on computer-aided engineering. The material used in the shaft test is AISI 1020 steel with two research variables, namely, the independent variable with radius (mm); 0 mm, 2 mm, 6 mm, 10 mm, 20 mm, 50 mm, and the dependent variables are von mises and displacement. Based on the results of the test investigations that have been carried out by simulating the shaft, it can be concluded that the addition of radius material as the investigated variable by applying a torque of 50 N.m will reduce the stress on the shaft, and this does not apply to the displacement that occurs on the shaft when the force or load is working.
DESIGN OF AUTOCLAVE FOR FRESH SHRIMP STERILIZATON PROCESS USING FINITE ELEMENT ANALYSIS Chandra, Hendri; Abdi, Jusran; Homzah, Ozkar F.; Basri, Hasan; Azhari, Ikbal; Utami, Nurhabibah Paramitha Eka
AUSTENIT Vol. 14 No. 2 (2022): AUSTENIT: October 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i2.5676

Abstract

Chloramphenicol is one of antibiotic compound which is an additional ingredient that is forbidden to be used in food products, especially in fresh shrimp product export. To avoid the used of preservative, then required sterilization process in a physical way which is vaporization using a high-pressure supercritical carbon dioxide (CO2). One of sterilization process for supercritical carbon dioxide is using autoclave media. Autoclave is a closed heating device used to sterilize or reducing a substance or object that is disserve by using high temperature and high pressure steam. In designing and constructing autoclave, the first step to be done is to define the function and the operation capacity. The function and capacity will determine the initial dimension of autoclave as well its working pressure and temperature. In this study, the autoclave was designed with quantitative methods and modeling using software Autodesk inventor 2016 based on finite element method. The given load is in the form of supercritical carbon dioxide pressure of 73.83bar and temperature of 31.30C. Based on the result of design, quantitative methods gives the safe result and optimized thickness needed autoclave usage.
KARAKTERISTIK PERMUKAAN PATAH DAN KETAHANAN LELAH PADA MATERIAL BEJANA TEKAN BAJA ASTM A36 Azhari, Ikbal; Chandra, Hendri; Homzah, Ozkar F.; Ramadhoni, Tri Satya; Sampurno, Rachmat Dwi
AUSTENIT Vol. 16 No. 1 (2024): AUSTENIT: April 2024
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v16i1.7219

Abstract

Pressure vessels are equipment in the industrial field to hold pressurized fluids, such as gas, oil and chemicals, ASTM A36 steel is one type of material that can be used in pressure vessels, this steel has good mechanical properties but still has limitations in its fatigue resistance. Pressure vessels receive internal and external loads, this pressure difference results in stress on the wall (shell). This stress can cause material damage, therefore the author conducted fatigue repeated bending and Scanning electron microscopy (SEM) testing to analyze fatigue resistance and fracture surface characteristics. Fatigue testing of 4 specimens with angle variations of 4Ëš, 8Ëš, 11Ëš and 13Ëš resulted in a cycle count of 1490200 cycles, 400050 cycles, 234200 cycles and 99000 cycles respectively. SEM results of the fracture surface of the 4Ëš and 13Ëš testing angles of ASTM A36 steel showed striation and microvoid coalescence and crack propagation indicating that the fatigue failure that occurred was ductile fracture. Based on the conclusions obtained, it shows that the number of cycles is influenced by the testing stress, which means that at high stresses, the life time of the pressure vessel will be smaller and vice versa.
Co-Authors Abdi, Jusran Amir Arifin Aneka Firdaus Astuti - Azhari, Ikbal Barlin Barlin Dewi Puspitasari Diah Kusuma Pratiwi Dyos Santoso Eka Utami, Nurhabibah Paramitha Ellyanie Ellyanie Gunawan Gunawan Gustini, Gustini Hasan Basri Kaprawi Kaprawi Marwani Marwani, Marwani Nasution, Jimmy D. Nurhabibah Paramitha Eka Utami Ozkar F. Homzah, Ozkar F. Prakoso, Akbar Teguh Prastyanto, Wisnu Hafiz Putra, Dicky Pratama Putra, Risky Utama Qomarul Hadi Rafli Fazal, Muhammad Ramadhoni, Tri Satya Riady, Muhammad Ihsan Riman Sipahutar Romli Romli, Romli Sampurno, Rachmat Dwi Saputra, M. A. Ade Tumpal Ojahan Rajagukguk Utama Putra, Risky Utami, Nurhabibah Paramitha Eka Yogi Saputra Zulkarnain Zulkarnain Zulkarnain, Rizki