Finite Element Analysis and Small Punch Testing for Determining the Cryogenic Fracture Toughness of Austenitic Stainless Steel Welds

Y. Shindo, K. Horiguchi, T. Sugo, Y. Mano

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The small punch (SP) test has been used successfully to characterize the elastic-plastic fracture toughness (JIC) of structural alloys and weldments for superconducting magnets in fusion energy systems with thin plate specimens of 10 by 10 by 0.5 mm. This study was performed to demonstrate the feasibility of performing SP tests on austenitic stainless steels and their welds at liquid helium temperature (4 K). Correlations between SP energy, equivalent fracture strain, and JIC were assessed. All JIC data were obtained using 25 mm thick compact specimens that followed the standard test method for JIC. A finite element analysis was also performed to convert the experimentally measured load-displacement data into useful engineering information. The maximum strain energy density was calculated and correlated with JIC.

Original languageEnglish
Pages (from-to)431-437
Number of pages7
JournalJournal of Testing and Evaluation
Volume28
Issue number6
DOIs
Publication statusPublished - 2000 Nov

Keywords

  • Austenitic stainless steels
  • Cryomechanics
  • Finite element analysis
  • Fracture toughness
  • Liquid helium temperature
  • Small punch testing
  • Welds

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Finite Element Analysis and Small Punch Testing for Determining the Cryogenic Fracture Toughness of Austenitic Stainless Steel Welds'. Together they form a unique fingerprint.

Cite this