Advertisement

Journal of Materials Science

, Volume 16, Issue 2, pp 429–432 | Cite as

A mathematical relation between volume strain, elongational strain and stress in homogeneous deformation

  • Derk Heikens
  • S. Dirk Sjoerdsma
  • W. Jan Coumans
Papers

Abstract

A model is presented for the volume strain of a two-phase blend which elongates homogeneously in a tensile test apparatus. In the case when only elastic deformation and crazing take place the volume strain against elongation curve can be constructed and calculated from the data of the stress-strain curve alone. When, as well as crazing and elastic deformation, shearing takes place, the data of the stress against elongation curve and the volume strain against elongation curve can be used to calculate the separate contributions of the three deformation mechanisms at any elongation. In principle, the model can be also used for any homogeneous system which deforms without necking and where one or more deformation mechanism is present.

Keywords

Polymer Tensile Test Elastic Deformation Deformation Mechanism Test Apparatus 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    W. Jan Coumans, Derk Heikens andS. Dirk Sjoerdsma,Polymer 21 (1980) 103.Google Scholar
  2. 2.
    W. Jan Coumans andDerk Heikens,Polymer 21 (1980) 957.Google Scholar
  3. 3.
    W. Jan Coumans, Derk Heikens andS. Dirk Sjoerdsma, International Union of Pure and Applied Chemistry 26th International Symposium on Macromolecules, Mainz, September, 1979, Vol. III, edited by I. Lüderwald and R. Weis, p. 1389.Google Scholar
  4. 4.
    C. B. Bucknall andD. Clayton,Nature 231 (1971) 107.Google Scholar
  5. 5.
    Idem, J. Mater. Sci. 7 (1972) 202.Google Scholar
  6. 6.
    C. B. Bucknall, D. Clayton andW. E. Keast,J.Mater. Sci. 7(1972)1443.Google Scholar
  7. 7.
    C. B. Bucknall, “Toughened Plastics” (Applied Science Publishers, London, 1977).Google Scholar

Copyright information

© Chapman and Hall Ltd 1981

Authors and Affiliations

  • Derk Heikens
    • 1
  • S. Dirk Sjoerdsma
    • 1
  • W. Jan Coumans
    • 1
  1. 1.Eindhoven University of TechnologyEindhovenThe Netherlands

Personalised recommendations