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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Heat source estimations to study the localized behaviour of superelastic NiTi shape memory alloys
verfasst von : H. Louche, D. Favier, L. Orgéas, V. Delobelle, P. Schlosser
Erschienen in: Application of Imaging Techniques to Mechanics of Materials and Structures, Volume 4
Verlag: Springer New York
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Full field measurements (thermal and kinematics) are powerful techniques to study the thermomechanical behaviour of materials. This communication presents coupled full field measurements conducted on NiTi SMAs during tensile tests. Temperature fields are used to estimate the heat sources associated with the stress induced phase transformations. A spatio temporal synchronisation between the thermal and kinematics fields allows to express the thermal or heat source fields in the reference (undeformed) configuration. Finally, a temporal integration of the heat sources for each material point gives the evolution of the heat induced by the phase transformation. Examples of such measurements are given in this communication.