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RESEARCH PAPERS

Notch Ductility Requirements of Line Pipes for Arresting Propagating Shear Fracture

[+] Author and Article Information
E. Sugie

Kawasaki Steel Corporation; High Strength Line Pipe Research Committee, Iron and Steel Institute of Japan, Tokyo, Japan

M. Matsuoka

Kobe Steel Ltd.; High Strength Line Pipe Research Committee, Iron and Steel Institute of Japan, Tokyo, Japan

T. Akiyama

Nippon Kokan K. K.; High Strength Line Pipe Research Committee, Iron and Steel Institute of Japan, Tokyo, Japan

K. Tanaka

Nippon Steel Corporation; High Strength Line Pipe Research Committee, Iron and Steel Institute of Japan, Tokyo, Japan

Y. Kawaguchi

Sumitomo Metal Industries Ltd.; High Strength Line Pipe Research Committee, Iron and Steel Institute of Japan, Tokyo, Japan

J. Pressure Vessel Technol 109(4), 428-434 (Nov 01, 1987) (7 pages) doi:10.1115/1.3264926 History: Received August 04, 1987; Online November 05, 2009

Abstract

Full-scale burst tests were carried out on X70 line pipes, 48 in. o. d. × 0.720 in. w. t., with air and rich and natural gas as the pressurizing gases. The experimental results indicated that very high notch ductilities of pipes are required for arresting propagating shear fracture especially in the case of the rich natural gas. From theoretical investigations a method was developed which enabled the prediction of the required notch ductilities of line pipes with regard to the type of gas, design stress and acceptable fracture length.

Copyright © 1987 by ASME
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