ABSTRACT
SPATE(Stress Pattern Analysis by Thermal Emission) can be effectively used to analyzed the stress distribution of the orthotropic structure under the repeated load by non-contact. In this research, the measuring conception and method of stress intensity factor of orthotropic material using SPATE are suggested. The validity of the method and conceptions were certified through SPATE experiment.
The relationships between the maximum values of SPATE signal and https://www.w3.org/1998/Math/MathML"> 1 / x ′ ( or 1 / y ′ ) https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203477021/be9e9212-91e2-414c-a3fd-3411e53b9ffb/content/inline-math_102_B.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> are theoretically established in the vicinity of crack tip of the orthotropic material. It is certified through SPATE experiment that their linear quality is very excellent.
