Damage mechanics characterization of high-cycle fatigue in quasi-isotropic CFRP laminates

Atsushi Hosoi, Hirokazu Karasawa, Hiroyuki Kawada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper describes the high-cycle fatigue characteristics of quasi-isotropic CFRP laminates [-45/0/45/90] s up to 10 8 cycles. To investigate the fatigue behavior in the high-life region, the fatigue tests were conducted with the frequency of 100Hz since it's difficult to conduct the tests with 5Hz. Then, the damage behavior of the specimen was observed with a microscope, a soft X-ray photography and a 3D ultrasonic inspection system. In this study, to evaluate quantitative characteristics of each the transverse crack propagation and the delamination growth in the high-cycle region, the energy release rate associated with damage growth to the width direction was calculate. The transverse crack propagation and the delamination growth to the width direction were evaluated based on a modified Paris-law approach. As the results, it was found that transverse crack propagation didn't depend on the frequency within the small temperature change and it was observed that delamination growth delayed with the test condition of less than σ maxb=0.3 of the applied stress level.

Original languageEnglish
Title of host publicationProceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics
Pages1729-1736
Number of pages8
Publication statusPublished - 2005 Dec 1
Event2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics - Portland, OR, United States
Duration: 2005 Jun 72005 Jun 9

Publication series

NameProceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics

Conference

Conference2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics
CountryUnited States
CityPortland, OR
Period05/6/705/6/9

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Keywords

  • CFRP laminates
  • Crack propagation
  • Delamination growth
  • Energy release rate
  • High-cycle fatigue

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Hosoi, A., Karasawa, H., & Kawada, H. (2005). Damage mechanics characterization of high-cycle fatigue in quasi-isotropic CFRP laminates. In Proceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics (pp. 1729-1736). (Proceedings of the 2005 SEM Annual Conference and Exposition on Experimental and Applied Mechanics).