Abstract

The paper provides analyses for two optical schemes developed for mapping 3-D crack tip fields in ductile materials. The first scheme combines the in-plane moire method with the projection moire method to determine all three displacement components simultaneously. In the second method, we combined one-beam laser speckle photography with the projection moire method to measure 3-D deformation fields. The experimental results obtained using these methods are presented.

© 1991 Optical Society of America

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