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. [Final Year Project] (Unpublished)

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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
Subjects: T Technology > TJ Mechanical engineering and machinery
Departments / MOR / COE: Engineering > Mechanical
Depositing User: Users 1278 not found.
Date Deposited: 04 Oct 2012 12:12
Last Modified: 25 Jan 2017 09:44

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