Published Online: 22
Page Count: 3
A Study on the Fitting Accuracy of CMOD Compliance Equations
Postdoctoral Research Fellow, Dept. of Civil & Environmental Engineering, Western Univ., London, ON
Assistant Professor, Dept. of Civil & Environmental Engineering, Western Univ., London, ON
Research Scientist, CANMET Materials Technology Laboratory, Natural Resources Canada, Hamilton, ON
(Received 28 June 2012; accepted 10 September 2012)
The maximum error of the inverse fitting of Tada et al.’s equation of the a/W–crack mouth opening displacement (CMOD) compliance equation proposed by Joyce and adopted in ASTM E1820-11 for single edge bend [SE(B)] specimens with shallow cracks (0.05 ≤ a/W < 0.45) is observed to be 2.03 % for 0.05 < a/W < 0.1. A new a/W–CMOD compliance equation with the same fifth-order polynomial fitting applicable for SE(B) specimens with 0.05 ≤ a/W ≤ 0.7 is therefore proposed. The maximum fitting error of the proposed equation is approximately 0.19 %.
E1820, SE(B), compliance equation, shallow crack, fitting accuracy
Paper ID: JTE20120213
Title A Study on the Fitting Accuracy of CMOD Compliance Equations
Symposium , 0000-00-00
ASTM International is a member of CrossRef.