Evaluation of Stress Intensity Factors in Biaxial Tensile Stress using Thermalelasticity and Photoelasticity

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Stress intensity factor K is analyzed by measuring distribution of sum of the principal stresses around slit tip by an infrared stress measuring device. Under the biaxial tensile stress, both K-values of the isotropic materials with slit angle 0° and 45° show there is no influence of the slit angle at Mode I. The tolerance of the measured K-values of the test specimens which are compared with measured K-values by photoelastic method are around 10-20and these increase as applied cyclic load increases. These tolerance can be reduced up to about 8% by modifying measurements. The effectiveness of the thermoelastic stress measurement method to KI value analyzing under biaxial tensile stress was confirmed.

Info:

Periodical:

Key Engineering Materials (Volumes 324-325)

Edited by:

M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz

Pages:

1103-1108

DOI:

10.4028/www.scientific.net/KEM.324-325.1103

Citation:

A. Shimamoto et al., "Evaluation of Stress Intensity Factors in Biaxial Tensile Stress using Thermalelasticity and Photoelasticity ", Key Engineering Materials, Vols. 324-325, pp. 1103-1108, 2006

Online since:

November 2006

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$35.00

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