STUDY ON RESISTANCE AGAINST CRACK OF STEEL MEMBER WITH GEOMETRICAL DISCONTINUITY

Abstract

It is effective to use the tough material in order to prevent the brittle fracture of steel members with some stress concentration points. In this study, FTP is defined as the necessary temperature to reduce the sensitivity to stress concentration and ensure the energy absorption capacity of the member. The aim of this study is to examine the influence of geometrical condition on FTP. For this purpose, specimens with side grooves and notches were manufactured and monotonic tensile loading tests were performed under the several different temperatures. As the result, the rise in FTP according to the sudden change of section area was observed.