TY - JOUR
T1 - Plastic Collapse Stresses Based on Flaw Combination Rules for Pipes Containing Two Circumferential Similar Flaws
AU - Hasegawa, Kunio
AU - Li, Yinsheng
AU - Kim, Yun Jae
AU - Lacroix, Valery
AU - Strnadel, Bohumir
N1 - Funding Information:
• European Union (Grant No: CZ.02.1.01/0.0/0.0/17_048/ 0007373; Funder ID: 10.13039/501100000780).
PY - 2019/6/1
Y1 - 2019/6/1
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. However, specific criteria of the rules are different among these FFS codes. On the other hand, plastic collapse bending stresses for stainless steel pipes with two circumferential similar flaws were obtained by experiments, and the prediction procedure for collapse stresses for pipes with two similar flaws was developed analytically. Using the experimental data and the analytical procedure, plastic collapse stresses for pipes with two similar flaws are compared with the stresses in compliance with the flaw combination criteria. It is shown that the calculated plastic collapse stresses based on the flaw 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. However, specific criteria of the rules are different among these FFS codes. On the other hand, plastic collapse bending stresses for stainless steel pipes with two circumferential similar flaws were obtained by experiments, and the prediction procedure for collapse stresses for pipes with two similar flaws was developed analytically. Using the experimental data and the analytical procedure, plastic collapse stresses for pipes with two similar flaws are compared with the stresses in compliance with the flaw combination criteria. It is shown that the calculated plastic collapse stresses based on the flaw combination criteria are significantly different from the experimental and analytical stresses.
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U2 - 10.1115/1.4042991
DO - 10.1115/1.4042991
M3 - Article
AN - SCOPUS:85063320496
SN - 0094-9930
VL - 141
JO - Journal of Pressure Vessel Technology, Transactions of the ASME
JF - Journal of Pressure Vessel Technology, Transactions of the ASME
IS - 3
M1 - 031201
ER -