کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
767616 | 897193 | 2011 | 5 صفحه PDF | دانلود رایگان |
A back-face strain (BFS) compliance relation has been developed for the standard compact C(T) specimen for a very wide range in crack-length-to-width (a/W) ratios. Both finite-element and boundary-element methods were used to develop the BFS relation for a/W ratios from 0.2 to 0.95. In addition, experimentally determined compliance values on four metallic materials compared well with the new relation over nearly the complete a/W range. The new relation can be used to monitor crack-length-against-cycles using computerized crack-monitoring systems that are currently used with the crack-mouth-opening-displacement (CMOD) gage method, and the relation has been cast in a standard form compatible with existing compliance crack length monitoring systems.
► Determined the back-face strain as a function of crack length in standard compact specimen.
► Develop an equation relating crack length to back-face strain over a wide range in crack-length-to-width ratios.
► Tested compact specimens made of four materials to validate compliance relationship.
Journal: Engineering Fracture Mechanics - Volume 78, Issue 15, October 2011, Pages 2707–2711