Experimental Evaluation of Stress-Optical Constants by Caustics
Source abstract
Abstract
A study of the experimental evaluation of the stress-optical constants accurate values was undertaken by the method of caustics. A series of experiments were performed in single edge-cracked specimens made of Plexiglas (PMMA). It was found that the values of the stress-optical constants were varied with the load and the thickness of the specimens. This means that a three-dimensional stress conditions hold in the neighbourhood of the crack tip. The accurate stress intensity factor KI can be experimentally evaluated by accurate values of the stress-optical constants. The present work illuminates the complicated problem of the changing state of stress around cracks and establishes the limits of applicability of the method of caustics for the evaluation of stress intensity factors and the triaxiality factor at crack tip
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Research context
OpenAlex topics: Engineering Structural Analysis Methods · Fatigue and fracture mechanics · Ultrasonics and Acoustic Wave Propagation
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References (19)
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