Plastic collapse stresses for pipes with circumferential twin flaws using combination rules

Kunio Hasegawa, Yinsheng Li, Yun-Jae Kim, Valery Lacroix, Bohumir Strnadel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

When discrete multiple flaws are in the same plane, and they are close to each other, it can be determined whether they are combined or standalone in accordance with combination rules provided by fitness-for-service (FFS) codes, such as ASME, JSME, BS7910, FKM, WES2805, etc. However, specific criteria of the rules are different amongst these FFS codes. On the other hand, plastic collapse bending stresses for stainless steel pipes with circumferential twin flaws were obtained by experiments and the prediction procedure for collapse stresses for pipes with twin flaws were developed analytically. Using the experimental data and the analytical procedure, plastic collapse stresses for pipes with twin flaws are compared with the stresses in compliance with the combination criteria. It is shown that the calculated plastic collapse stresses based on the combination criteria are significantly different from the experimental and analytical stresses.

Original languageEnglish
Title of host publicationCodes and Standards
PublisherAmerican Society of Mechanical Engineers (ASME)
Volume1A-2018
ISBN (Electronic)9780791851586
DOIs
Publication statusPublished - 2018 Jan 1
EventASME 2018 Pressure Vessels and Piping Conference, PVP 2018 - Prague, Czech Republic
Duration: 2018 Jul 152018 Jul 20

Other

OtherASME 2018 Pressure Vessels and Piping Conference, PVP 2018
CountryCzech Republic
CityPrague
Period18/7/1518/7/20

ASJC Scopus subject areas

  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Plastic collapse stresses for pipes with circumferential twin flaws using combination rules'. Together they form a unique fingerprint.

  • Cite this

    Hasegawa, K., Li, Y., Kim, Y-J., Lacroix, V., & Strnadel, B. (2018). Plastic collapse stresses for pipes with circumferential twin flaws using combination rules. In Codes and Standards (Vol. 1A-2018). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP201884019