SEMI-ANALYTICAL SOLUTIONS OF FRACTURE PARAMETERS FOR CURVED CT SPECIMEN FROM CANDU PRESSURE TUBE

被引：0

作者：

Cao, Yupeng ^{[1
]}

Bao, Chen ^{[2
]}

机构：

[1] Shanghai Nucl Engn Res & Design Inst, Shanghai, Peoples R China

[2] Southwest Jiao Tong Univ, Chengdu, Peoples R China

来源：

PROCEEDINGS OF ASME 2023 PRESSURE VESSELS & PIPING CONFERENCE, PVP2023, VOL 5 | 2023年

关键词：

curved compact tension specimen; pressure tube; fracture toughness;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The pressure tubes of Zr-2.5Nb are primary pressure boundaries in a CANDU reactor. The major threat to the inservice pressure tubes is posed by Delayed Hydrogen Crack (DHC) initiation and growth. The fracture initiation toughness values are the necessary input data required by CSA N285.8[1]. The curved compact tension (CCT) specimens are recommended. However, the CCT specimen is not a standard specimen specified by ASTM E1820[2]. This paper studies the K factor, the compliance C and the J-integral solutions for the CCT specimen using theoretical analysis and FEA modeling. The modified solutions are compared with the results from the solution for standard CT specimen in E1820 and from FEA. The applicability of the modified solutions is discussed in this paper.

引用

页数：13