Abstract
This paper presents an experimental investigation of the singular stress field near the vertex of a bimaterial wedge using a digital photoelastic technique. Special attention is given to the casting of bimaterial wedge specimens and analysis technique for extracting stress intensity factors from photoelastic samples. Different bimaterial wedge specimens are made of two different photoelastic materials bonded through a special casting procedure and loaded in simple tension. A new multiple-parameter method is developed to obtain the stress intensity factor reliably from the isochromatic fringe patterns and the series representation of the stress field at the vertex of the wedge. Experimental results are compared with finite element predictions, and good agreement is observed.
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Meguid, S.A., Tan, M.A. Photoelastic analysis of the singular stress field in a bimaterial wedge. Experimental Mechanics 40, 68–74 (2000). https://doi.org/10.1007/BF02327550
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DOI: https://doi.org/10.1007/BF02327550