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RESEARCH PAPERS

Static and Dynamic Analysis of Flaw Stability in Piping Systems

[+] Author and Article Information
D. F. Quiñones

R. L. Cloud and Associates, Inc., Berkeley, CA 94710

R. E. Nickell

Applied Science and Technology, Inc., Poway, CA 92064

D. M. Norris

Santa Cruz, CA 95062

J. Pressure Vessel Technol 112(3), 204-212 (Aug 01, 1990) (9 pages) doi:10.1115/1.2928615 History: Received April 07, 1989; Revised February 24, 1990; Online June 17, 2008

Abstract

Static and dynamic pretest simulations of a degraded nuclear piping test are performed to investigate crack stability and piping integrity. The purpose of this study is to provide system design guidance for a large-diameter piping test and to gain insight on modeling dynamic crack behavior in austenitic and carbon steel base metal and weldments. Combined operating temperature and pressure plus an idealized seismic loading are applied until substantial crack growth, leakage, or pipe guillotining is predicted. The importance of modeling elbow deformation and plasticity is demonstrated.

Copyright © 1990 by The American Society of Mechanical Engineers
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