CHARACTERISTICS OF FRACTURE SURFACE AND FATIGUE RESISTANCE IN ASTM A36 STEEL PRESSURE VESSEL MATERIAL

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Published: May 31, 2024
DOI: https://doi.org/10.5281/zenodo.11403148
Keywords:
pressure vessel, ASTM A36 steel, fatigue, scanning electron microscopy (SEM)

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Ikbal Azhari
Department of Mechanical Engineering, Universitas Sriwijaya
Hendri Chandra
Department of Mechanical Engineering, Universitas Sriwijaya
Ozkar F. Homzah
Department of Mechanical Engineering, Politeknik Negeri Sriwijaya
Tri Satya Ramadhoni
Department of Mechanical Engineering, Politeknik Negeri Sriwijaya
Rachmat Dwi Sampurno
Department of Mechanical Engineering, Politeknik Negeri Sriwijaya

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 4˚, 8˚, 11˚ and 13˚ resulted in a cycle count of 1490200 cycles, 400050 cycles, 234200 cycles and 99000 cycles respectively. SEM results of the fracture surface of the 4˚ and 13˚ 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.

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How to Cite
Azhari, I., Chandra, H., Homzah, O. F., Ramadhoni, T. S., & Sampurno, R. D. (2024). CHARACTERISTICS OF FRACTURE SURFACE AND FATIGUE RESISTANCE IN ASTM A36 STEEL PRESSURE VESSEL MATERIAL. AUSTENIT, 16(1), 42–47. https://doi.org/10.5281/zenodo.11403148
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Vol. 16 No. 1 (2024): AUSTENIT: April 2024
Section
Articles
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