Journal of Materials Science

, Volume 23, Issue 9, pp 3168–3172 | Cite as

Delayed elastic recovery of hardness indentations in polyethylene

  • V. Lorenzo
  • J. M. Pereña
  • J. G. Fatou
  • J. A. Mendez-Morales
  • J. A. Aznarez


The depth of Vickers microindentations in high density, low density and linear low density polyethylenes has been studied by two wave interferometry. The evolution of the delayed depth recovery is explained in terms of the Burgers model of viscoelastic behaviour and the numerical parameters associated with the model are related to the crystallinity, elastic modulus and yield stress of the polyethylenes studied.


Polymer Polyethylene Elastic Modulus Viscoelastic Behaviour Numerical Parameter 
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Copyright information

© Chapman and Hall Ltd 1988

Authors and Affiliations

  • V. Lorenzo
    • 1
  • J. M. Pereña
    • 2
  • J. G. Fatou
    • 2
  • J. A. Mendez-Morales
    • 3
  • J. A. Aznarez
    • 3
  1. 1.E. T. S. de Ingenieros IndustrialesMadridSpain
  2. 2.Instituto de Plásticos y CauchoMadridSpain
  3. 3.Instituto de OpticaMadridSpain

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