Measurement of crack growth and strain distribution around crack tip under elevated temperature

Tatsuhiko Aizawa, Genki Yagawa, Yoshio Ando, Katsuhiko Sakaue, Mikio Takagi

Research output: Contribution to journalArticle

Abstract

Through the macroscopic measurement of crack growth under the elevated temperature, the crack propagation rate has been found to be in better correlation with the J contour integral value than with other candidate parameters e.g. elastic stress intensity factor, net section stress. In order that this J value may be defined under the stationary creep condition, we must be aware of a certain singular strain field around the crack tip, which has been theoretically analyzed but the existence of which is not recognized experimentally. Using the Moire topographical method and digital processing of raw Moire grids and fringe patterns, the interesting informations have been obtained regarding the strain concentration at the crack tip.

Original languageEnglish
Pages (from-to)281-284
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume189
DOIs
Publication statusPublished - 1979 Jul 27
Externally publishedYes

Fingerprint

strain distribution
crack tips
Crack tips
Crack propagation
cracks
stress intensity factors
crack propagation
Digital signal processing
Stress intensity factors
Creep
diffraction patterns
grids
Temperature
temperature

ASJC Scopus subject areas

  • Applied Mathematics
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Computer Science Applications

Cite this

Measurement of crack growth and strain distribution around crack tip under elevated temperature. / Aizawa, Tatsuhiko; Yagawa, Genki; Ando, Yoshio; Sakaue, Katsuhiko; Takagi, Mikio.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 189, 27.07.1979, p. 281-284.

Research output: Contribution to journalArticle

Aizawa, Tatsuhiko ; Yagawa, Genki ; Ando, Yoshio ; Sakaue, Katsuhiko ; Takagi, Mikio. / Measurement of crack growth and strain distribution around crack tip under elevated temperature. In: Proceedings of SPIE - The International Society for Optical Engineering. 1979 ; Vol. 189. pp. 281-284.
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