Analysis of moiré data for near-interface cracks |
| |
Authors: | Keith Rozenburg J R Berger Paul A Martin Ivar Reimanis |
| |
Affiliation: | (1) Department of Metallurgical and Materials Engineering, Colorado School of Mines, Golden, CO 80401, USA;(2) Division of Engineering, Colorado School of Mines, Golden, CO 80401, USA;(3) Present address: School of Engineering, University of Alaska Anchorage, Anchorage, AK 99502, USA;(4) Department of Mathematical and Computer Science, Colorado School of Mines, Golden, CO 80401, USA |
| |
Abstract: | The analysis of moiré data obtained in bimaterials with near-interface cracks is examined. To extract stress intensity factors,
a collocation-type method is developed where Westergaard crack-tip expansions are used for displacements in the cracked portion
of the bimaterial, expansions from the method of fundamental solutions are used for displacements in the uncracked portion
of the bimaterial, and continuity conditions at the interface are used to couple the two expansions. Proof-of-principle numerical
experiments performed on synthetic data from a boundary element analysis of a cracked bimaterial successfully demonstrated
the analysis method. Mixed-mode stress intensity factors were then determined from actual moiré data obtained in a copper–tungsten
specimen. |
| |
Keywords: | Moiré Near-interface cracks Collocation |
本文献已被 SpringerLink 等数据库收录! |
|