Determination of Stress Intensity Factors for an Interfacial Crack in a Bi-Material by Digital Photoelasticity

M. Ravichandran; K. Ramesh

doi:10.4028/www.scientific.net/AMM.1-2.139

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 1-2Determination of Stress Intensity Factors for an...

Determination of Stress Intensity Factors for an Interfacial Crack in a Bi-Material by Digital Photoelasticity

Abstract:

The main sources of error in the determination of stress intensity factors (SIFs) for an interface crack in a bi-material by conventional photoelasticity are the measurement of the positional co-ordinates of the data point and the fringe order. In the present work, use of two digital photoelasticity methods for collecting these data is discussed. SIFs are evaluated using constant radius method and a least squares approach based on the singular stress field equation. The need for developing a multi-parameter stress field solution for evaluating SIF is highlighted.

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Periodical:

Applied Mechanics and Materials (Volumes 1-2)

Pages:

139-146

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.1-2.139

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Online since:

September 2004

Authors:

M. Ravichandran, K. Ramesh

Keywords:

Digital Photoelasticity, Fringe Thinning, Interface Crack, Phase Shifting, Stress Intensity Factor (SIF)

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