Acoustic emission and fracture behavior of GFRP woven laminates at cryogenic temperatures

Yasuhide Shindo, Mayumi Sumikawa, Fumio Narita, Kazuaki Sanada

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This paper describes an experimental and analytical study on fracture and damage behavior of GFRP woven laminates at cryogenic temperatures. CT (compact tension) tests were carried out at room temperature, liquid nitrogen temperature (77 K) and liquid helium temperature (4 K) to evaluate the critical values of the fracture mechanics parameters. During the CT tests, AE (acoustic emission) method was implemented. AE signals can identify the critical load at which gross failure occurs. A FEA (finite element analysis) was also applied to calculate the fracture mechanics parameters. The failure criteria (Hoffman criterion and maximum strain criterion) or the damage variable based on the continuum damage mechanics was incorporated into the model to interpret the experimental measurements and to study the damage distributions within the specimen. Several methods of calculating J-integral are discussed.

Original languageEnglish
Pages (from-to)439-449
Number of pages11
JournalCryogenics
Volume45
Issue number6
DOIs
Publication statusPublished - 2005 Jun 1

Keywords

  • Composites (A)
  • Fusion magnets (F)
  • Mechanical properties (C)
  • Structural supports (F)
  • Superconducting magnets (F)

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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