EXPERIMENTAL STUDY ON J-INTEGRAL VALUE FOR THREE-POINT BEND SPECIMEN
SU HongYing
LIU RenDong
LI WenZhu
LIN Li
XU Xin
Abstract：Using two different kinds of three-point bend specimens,J-integral values calculated based on plastic area of under load-notch-opening displacement curve,according to GB/T 21143-2014 and GB/T 21143-2007,GB/T 2358-1994 appendix D two standards,combining with the two different methods to calculate the J-integral values.The results showed that with respect to the different crack extension △a,J-integral values from low to high values,the average relative deviation of two methods J-integral value ＜ 2.0％,illustrated with GB/T 21143-2007,GB/T 2358-1994 Appendix D combined two standards can also accurately calculate the J-integral values,a method of calculating the J-integral values using a three-point bending specimen was provided.
Keywords：J-integral valueFracture toughnessThree-point bend specimen
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 1348-1352 )