A way forward for industry to determine valid cyclic-fatigue relationships for polymer-matrix fibre composites

Rhys Jones, Anthony J. Kinloch

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

2 Citations (Scopus)


In the present paper a novel methodology is proposed for predicting an 'upper-bound' (i.e. 'worst case') fatigue crack growth (FCG) rate curve from laboratory double-cantilever beam (DCB) test data which is representative of a composite laminate exhibiting no, or only very little, retardation (i.e. slowing) of the FCG rate under fatigue loading, as is the case with most real-life applications. The proposed methodology also takes into account the inherent scatter of such fatigue tests. To achieve this we have employed a variant of the Hartman-Schijve equation. The resulting conservative 'upper-bound' FCG rate curve represents a unique and valid 'upper-bound' fatigue relationship which may be used in industrial applications for (a) material development, characterisation and comparative studies and (b) design and lifing studies.

Original languageEnglish
Title of host publicationProcedia Structural Integrity
Number of pages13
Publication statusPublished - 2020
EventVirtual European Conference on Fracture 2020 - Virtual, Online
Duration: 29 Jun 20201 Jul 2020
Conference number: 1st
https://www.sciencedirect.com/journal/procedia-structural-integrity/vol/28/suppl/C (Proceedings)


ConferenceVirtual European Conference on Fracture 2020
Abbreviated titleVECF 2020
CityVirtual, Online
Internet address


  • CFRP
  • Composites
  • Fatigue
  • Fracture mechanics
  • Modelling
  • Service-life

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