Long-term fatigue strength prediction of CFRP structure based on micromechanics of failure

Hongneng Cai, Yasushi Miyano, Masayuki Nakada, SungKyu Ha

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

A prediction method for the fatigue strength of polymer composites under arbitrary frequency, load ratio and temperature was developed with the combined method of the micromechanics of failure (MMF) developed by Ha and the accelerated testing methodology (ATM) developed by Miyano and Nakada. The time- temperature dependent master curves of MMF/ATM critical parameters were constructed by tensile and compressive static and fatigue tests for the longitudinal and transverse directions of unidirectional CFRP under various temperatures based on the three-dimensional micromechanics of fibers and matrix resin and the time- temperature superposition principle which holds for the viscoelastic behavior of matrix resin. These master curves can be used to predict the fatigue strength of composite structures with multi-directional laminations at any time, temperature, and number of cycles to failure. The applicability of MMF/ATM combined method to predict the long term strength of CFRP structures was experimentally confirmed by prediction of the open hole compression fatigue strength of the quasi-isotropic CFRP laminates.

Original languageEnglish
Pages (from-to)825-844
Number of pages20
JournalJournal of Composite Materials
Volume42
Issue number8
DOIs
StatePublished - 2008 Apr 1

Fingerprint

Micromechanics
Carbon fiber reinforced plastics
Testing
Temperature
Resins
Composite structures
Laminates
Polymers
Compaction
Fatigue strength
carbon fiber reinforced plastic
Fatigue of materials
Fibers
Composite materials

Keywords

  • Accelerated testing methodology
  • Constituent-based strength analysis.
  • Failure prediction
  • Fatigue strength
  • Micromechanics of failure

Cite this

Cai, Hongneng ; Miyano, Yasushi ; Nakada, Masayuki ; Ha, SungKyu. / Long-term fatigue strength prediction of CFRP structure based on micromechanics of failure. In: Journal of Composite Materials. 2008 ; Vol. 42, No. 8. pp. 825-844.
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Long-term fatigue strength prediction of CFRP structure based on micromechanics of failure. / Cai, Hongneng; Miyano, Yasushi; Nakada, Masayuki; Ha, SungKyu.

In: Journal of Composite Materials, Vol. 42, No. 8, 01.04.2008, p. 825-844.

Research output: Contribution to journalArticle

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