# SPATE에 의한 직교이방성체의 응력확대계수 측정

Hwang, Jae-Seok;Suh, Jae-Guk;Lee, Hyo-Jae;Nam, Jeong-Hwan;Rpwlands, R.E.
황재석;서재국;이효재;남정환

• Published : 1996.10.01
• 14 6

#### Abstract

SPATE(Stress Pattern Analysis by Thermal Emission) can be effectively used to analyze 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 relationships between the maximum values of SPATE signal and $1/\sqrt{X'}$ (or $1/\sqrt{y'}$) 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.

#### Keywords

SPATE(Stress Pattern Analysis by Thermal Emission);Stress Intensity Factor;Thermomechanical Calibration Coefficient