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http://dx.doi.org/10.3795/KSME-A.2014.38.7.757

Evaluation of Shape Parameter Effect on the J-R Curve of Curved CT Specimen Using Limit Load Method  

Shin, In Hwan (Central Research Institute, Korea Hydro Nuclear Power Corporation)
Park, Chi Yong (Central Research Institute, Korea Hydro Nuclear Power Corporation)
Seok, Chang Sung (Dept. of Mechanical Engineering, SungKyunKwan Univ.)
Koo, Jae Mean (Dept. of Mechanical Engineering, SungKyunKwan Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.38, no.7, 2014 , pp. 757-764 More about this Journal
Abstract
In this study, the effect of shape parameters on the J-R curves of curved CT specimens was evaluated using the limit load method. Fracture toughness tests considering the shape factors L/W and $R_m/t$ of the specimens were also performed. Thereafter, the J-R curves of the curved CT specimens were compared using the J-integral equation proposed in the ASTM (American Society for Testing and Materials) and limit load solution. The J-R curves of the curved CT specimens were also compared with those of the CWP (curved wide plate), which is regarded to be similar to real pipe and standard specimens. Finally, the effectiveness of the J-R curve of each curved CT specimen was evaluated. The results of this study can be used for assessing the applicability of curved CT specimens in the accurate evaluation of the fracture toughness of real pipes.
Keywords
Curved CT Specimen; J-R Curve; Fracture Toughness; Limit Load Method; Plastic ${\eta}$-Factor;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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