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Stress Intensity Factor on a Surface Crack of Cylindrical Pressure Vessel

Mohamed Razali, Muhammed Raqib bin (2009) Stress Intensity Factor on a Surface Crack of Cylindrical Pressure Vessel. Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

Cylindrical Pressure Vessel is widely used in the industries. The wide application of this vessel has made the studies and engineering design to be more important than before. The best design need to be obtained in order to ensure the safety, performance and reliability of the vessel. Because of wrong selection of material, design and overloading cracks can occur at the surface of the pressure vessel. This is due to high Stress intensity Factor (SIF) that occurs at the crack. This report basically discusses the research done and basic understanding of the chosen topic, which is Stress Intensity Factor on a Surface Crack of Cylindrical Pressure Vessel. The objective of the project is to do the investigation and understand the surface crack propagation in a cylindrical pressure vessel. A standard practice of the fracture testing is referred to the ASTM Standard Test Practice for Fracture Testing with Surface-Crack Tension Specimens (E 740 – 88). The analysis used A516 Grade 60 mild steel (0.25 carbon) as a reference of material of this project. It is based from Pressure Vessel Design Manual, Third Edition by Dennis R. Moss where it states the material for the surface material for cylindrical pressure vessel. Software called ANSYS had been used to analyze the effect of surface crack to the Stress Intensity Factor (SIF). Theorically, if the crack size and crack depth increase the value of Stress Intensity Factor will also increase at the crack tip of the crack. This has been proves with the result that the author get. From the analytical approach the crack length, c and crack depth, a influences the value of SIF. This result can be approved with the ANSYS analysis where the value of SIF will increase with the increasing of crack depth and crack size.

Item Type: Final Year Project
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 1278 not found.
Date Deposited: 04 Oct 2012 12:12
Last Modified: 25 Jan 2017 09:44
URI: http://utpedia.utp.edu.my/id/eprint/3995

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