600°C creep analysis of metals using the Moiré interferometry method

Abstract Using a holographic grating for the high temperature and Moire interferometry method, this paper offers an experimental study on the residual creep strain of a No. 20 carbon steel specimen with a central hole under a tensile load. The test was carried out at 600°C for 40 h. The residual creep strain distribution of the specimen over the minimum cross-section and the changing trend of the strain-concentration factors with creep were obtained.