Experimental Analysis of KI KII Mixed Mode Stress Intensity Factors by Combination of Slab Analogy and Moire Measurement

A new development of the slab analogy is proposed for the experimental determination of the KI and KII mixed mode stress intensity factors by the combination of the slab analogy and moire measurement. In this method, sharpness of crack tips and arbitrary forms can be more easily given to the crack models to be analyzed in comparison with existent mothods. The present new method was applied to the analysis of theoretically known cracks, such as inclined linear, linear bent and circular cracks, to prove its applicability. The results obtained suggest further effective application to the analysis of Stress intensity factors of the cracks with arbitrary configuration and locations.