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http://dx.doi.org/10.3795/KSME-A.2003.27.1.119

Variation of A2 with Crack Propagation in a Ductile Metal； Experimental Evaluation  

Kim, Heon-Joong (전남대학교 대학원 기계공학과)
Kim, Dong-Hak (전남대학교 대학원 기계공학과)
Yang, Kyeong-Jin (전남대학교 대학원 기계공학과)
Kang, Ki-Ju (전남대학교 기계시스템공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.27, no.1, 2003 , pp. 119-125 More about this Journal
Abstract
A way to measure the second parameter $A_2$of CT specimens is described. The displacement $\delta$$_{5}$ which is measured continuously from visual images of the lateral surface during crack growth is used to calculate the A, as a function of crack growth. The crack length is measured by DCPD(Direct Current Potential Drop) method and the J-resistance curve is determined according to ASTM standard E1737-96. To prove the validity of this method, three dimensional finite element analyses were performed, and variations of the displacements $\delta$$_{5}$ and $A_2$along the thickness were explored. As the result, it has been shown that the $\delta$$_{5}$ measured from the visual images of the lateral surface and the corresponding $A_2$can be regarded as the average through the thickness for 1T and 1/2T specimens of SA106Gr.C steel.steel.
Keywords
J-$A_2$Theory; J-R Curve; CT Specimen; Finite Element Method;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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