Fatigue crack growth under compressive loading

Koichi Kasaba, Takahiro Sano, Souichi Kudo, Tetsuo Shoji, Kazumune Katagiri, Tadashi Sato

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

S/C magnets have many components which were designed to be compressively stressed. This paper describes a possible fatigue crack growth even under fully compressive stresses. In general crack is thought to close under compressive stress condition. But, if there is a tensile residual stress field in the specimen, the crack can open and grow to a considerable length. Compressive cyclic loading tests were made on the compact tension specimen with a hole at the center of ligament region where a tensile residual stress field was introduced by an excessive compressive pre-stress. Elastoplastic Finite Element Method (FEM) analysis indicated that the crack growth relaxed and re-distributed the residual tensile stress to some extent. In consequence it is experimentally verified that the crack grew to the length nearly to the fracture.

Original languageEnglish
Pages (from-to)2059-2063
Number of pages5
JournalJournal of Nuclear Materials
Volume258-263
Issue numberPART 2 B
DOIs
Publication statusPublished - 1998 Oct

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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