Effect of Surface Roughness on the Determination of the Creep Properties of Material by Using Three Points Bending Creep Test

摘要

The purpose of this paper is to understand the effect of surface roughness of the specimen on obtaining the creep characteristics by using bending creep tests. To this aim, a numerical study has been performed on the creep damage development of the specimen by implementing the different surface roughness into finite element models. The work may shed some light on the influence of different surface roughness on the stress distribution, the net section stress, and the indentation creep stress index were analyzed.