TY - GEN
T1 - Plastic collapse stresses for pipes with circumferential twin flaws using combination rules
AU - Hasegawa, Kunio
AU - Li, Yinsheng
AU - Kim, Yun Jae
AU - Lacroix, Valery
AU - Strnadel, Bohumir
N1 - Funding Information:
This work was conducted under the activities of the ASME Code Section XI Working Group on Pipe Flaw Evaluation. The authors wish to acknowledge the supports and suggestions by chair Douglas A. Scarth and members of the Working Group.
Publisher Copyright:
Copyright © 2018 ASME.
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85056834512&partnerID=8YFLogxK
U2 - 10.1115/PVP201884019
DO - 10.1115/PVP201884019
M3 - Conference contribution
AN - SCOPUS:85056834512
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
BT - Codes and Standards
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2018 Pressure Vessels and Piping Conference, PVP 2018
Y2 - 15 July 2018 through 20 July 2018
ER -