Tearing Modulus Analysis for Pipes Containing Constant Depth Internal Flaw

[+] Author and Article Information
M. D. Rajab

Department of Mechanical Engineering, Kuwait University, Kuwait

Akram Zahoor

Novetech Corporation, Rockville, MD

J. Eng. Mater. Technol 113(1), 156-161 (Jan 01, 1991) (6 pages) doi:10.1115/1.2903372 History: Received December 04, 1989; Revised May 01, 1990; Online April 29, 2008


The pipe displacement and tearing modulus solutions are derived for pipes containing a uniform depth internal flaw under bending moment or axial loading. The tearing modulus solution is derived for both load control and displacement control conditions. These solutions are then used to construct critical stress curves for various flaw sizes for a carbon steel pipe. These curves are useful in predicting the onset of flaw growth instability. Critical stress curves can be similarly constructed for other materials and pipe geometries.

Copyright © 1991 by The American Society of Mechanical Engineers
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