Journal of Materials Science

, Volume 30, Issue 7, pp 1661–1670 | Cite as

The flex fatigue of polyamide and polyester fibres

Part II The development of damage under standard conditions
  • J. W. S. Hearle
  • M. Miraftab


Polyamide and polyester fibres have been subjected to flex fatigue by pulling to and fro over a pin, in order to investigate the alternative damage modes, namely cracks along kink-bands due to compression, and axial splitting due to shear stresses. Initial studies determined the conditions that were sufficiently severe to give a short enough test time but not so severe that abrasion on the pin was dominant. Fibres were then cycled for varying periods, the damage viewed in a scanning electron microscope, and the change in tensile properties, including residual strength, determined.


Polymer Electron Microscope Scanning Electron Microscope Fatigue Shear Stress 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    J. W. S. Hearle and M. Miraftab, J. Mater. Sci 26 (1991) 2861.CrossRefGoogle Scholar
  2. 2.
    J. W. S. Hearle, B. Lomas, W. D. Cooke and I. J. Duerden, “Fibre Failure and Wear of Materials” (Ellis Horwood, Chichester, 1989).Google Scholar
  3. 3.
    J. P. Den Hartog, “Strength of Materials” (McGraw-Hill, 1949; Dover, 1961).Google Scholar
  4. 4.
    M. Miraftab, PhD thesis, University of Manchester (1986).Google Scholar

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • J. W. S. Hearle
    • 1
  • M. Miraftab
    • 1
  1. 1.Department of TextilesUMISTManchesterUK

Personalised recommendations