J-R Curves From Circumferentially Through-Wall-Cracked Pipe Tests Subjected to Combined Bending and Tension—Part II: Experimental and Analytical Validation

[+] Author and Article Information
N. Miura

Materials Science Department, Central Research Institute of Electric Power Industry, 2-11-1, Iwado Kita, Komae-shi, Tokyo 201, Japan

G. M. Wilkowski

Engineering Mechanics Corporation of Columbus, 4181 Maystar Way, Hilliard, OH 43026

J. Pressure Vessel Technol 120(4), 412-417 (Nov 01, 1998) (6 pages) doi:10.1115/1.2842352 History: Received September 01, 1997; Revised June 10, 1998; Online February 11, 2008


In Part I (Miura and Wilkowski, 1998) of this paper, the theory of the two η-factor solutions for circumferentially through-wall-cracked pipes subjected to combined bending and tension due to internal pressure was presented. These solutions seemed to give reasonable predictions by comparing with the existing simplified J -estimation scheme. It was also ascertained that the J would be underestimated if the effect of the internal pressure was not properly considered. Consequently, this paper presents the application of these solutions to full-scale pipe tests. The tests were performed at 288°C (550°F) under combined bending and internal pressure. The materials used for the tests were both carbon steel and stainless steel. The effect of combined loading on the J-R curves was determined and compared to C(T) specimen J-R curves. The solutions were then verified by using three-dimensional finite element analysis.

Copyright © 1998 by The American Society of Mechanical Engineers
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