Author(s)

T. Honda, Y. Kitsunai & T. Sasaki

Abstract

Stress concentration factors measured by an infrared stress analysis method have usually been lower than theoretical or analytical values In order to reveal the source of the error, an unsteady heat conduction analysis under cyclic loading was carried out and the results were compared with the measurement results. The comparison showed that there were three sources of error: (1) inability to achieve the adiabatic condition due to heat conduction around the notch root, (2) the edge effect of infrared camera and (3) the resolution limit of an infrared camera. 1 Introduction The local stresses and strains near notches or cracks are very important for fracture analyses of cyclically loaded structure components. Thus, a number of experimental methods such as a photoela

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