1001 Estimation of Maximum Load for Pipes with Multiple Circumferential Flaws by Limit Load Analysis

Abstract

This experimental study presents validity of limit load analysis for pipes with multiple circumferential flaws. We performed quasi-static four-point bending tests on Type 304 stainless steel pipes with single, double or triple circumferential flaws. Maximum loads measured in these tests were estimated by limit load analysis for pipes with multiple circumferential flaws. All estimation results using flow stress (2.7S_m) defined by the JSME S NA-l-2008 show conservatism against test results. Estimation results using flow stresses obtained from tests for the pipe with the single flaw show in quantitative agreement with test results.