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

Akira Shimamoto; Hiroshi Ohkawara; Hong Yang Zhao

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

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 324-325Evaluation of Stress Intensity Factors in Biaxial...

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

Abstract:

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.

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Key Engineering Materials (Volumes 324-325)

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1103-1108

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https://doi.org/10.4028/www.scientific.net/KEM.324-325.1103

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Online since:

November 2006

Authors:

Akira Shimamoto, Hiroshi Ohkawara, Hong Yang Zhao

Keywords:

Biaxial Tension, Photoelasticity, Stress Intensity, Thermoelasticity

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