Using a holographic grating for the high temperature and Moire interferomet
ry method, this paper offers an experimental study on the residual creep st
rain of a No. 20 carbon steel specimen with a central hole under a tensile
load. The test was carried out at 600 degrees C for 40 h. The residual cree
p strain distribution of the specimen over the minimum cross-section and th
e changing trend of the strain-concentration factors with creep were obtain
ed. (C) 1999 Elsevier Science S.A. All rights reserved.