Journal of Materials Science

, Volume 23, Issue 9, pp 3314–3320 | Cite as

Calorimetric measurements of transformation thermodynamics and thermal efficiencies of NiTi helices

  • A. P. Jardine
Article

Abstract

The latent heats and thermal efficiency of a NiTi helix as the driving element of a Shape Memory Effect (SME) heat engine was measured by an adiabatic calorimeter capable of simulating a heat engine cycle. The latent heat measurements were found to be highly variable. Thermal efficiencies between 2.6 and 4.5% were measured in the limit of low external stresses needed for reproducible cycling behaviour.

Keywords

Polymer Thermal Efficiency Calorimeter Latent Heat Memory Effect 

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Copyright information

© Chapman and Hall Ltd 1988

Authors and Affiliations

  • A. P. Jardine
    • 1
  1. 1.H. H. Wills Physics LaboratoryUniversity of BristolBristolUK

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