27 September 1993 Measurement of mixed mode (I,II) stress intensity factors (SIFs) of an interface crack by the optical method of caustics
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Abstract
The optical method of caustics has been utilized to study the problem of a crack lying along the interface of adhesively bonded aluminum structures. The basic principles of the method, the mathematical description and the derivation of caustic evaluation formulas are presented for homogeneous and dissimilar materials. Optically flat mirror surfaces were achieved by developing a 'coating adhesion' technique. Predicted caustics using the derived equations were compared with the caustics obtained experimentally which show good agreement.
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Lyndon Edwards, Lyndon Edwards, H. Y. Ahmad, H. Y. Ahmad, } "Measurement of mixed mode (I,II) stress intensity factors (SIFs) of an interface crack by the optical method of caustics", Proc. SPIE 1999, Adhesives Engineering, (27 September 1993); doi: 10.1117/12.158596; https://doi.org/10.1117/12.158596
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