Differential Scanning Calorimetry of Superelastic Nitinol for Tuneable Devices

Feeney, A. and Lucas, M. (2015) Differential Scanning Calorimetry of Superelastic Nitinol for Tuneable Devices. In: 10th International Conference on Advances in Experimental Mechanics, Edinburgh, Scotland, 1-3 Sep 2015,

Abstract

Nitinol has been used to fabricate tuneable-frequency cymbal transducers by exploiting its solid-state phase transformation capability. The temperatures at which Nitinol transforms are commonly measured using differential scanning calorimetry (DSC). However, these measurements are shown to be inaccurate for superelastic Nitinol, reportedly attributed to residual stresses in the material resulting from the fabrication process. This study of DSC accuracy is conducted for untreated and heat-treated superelastic Nitinol. Cymbal transducers are fabricated from both materials and it is demonstrated, through comparison of results from DSC estimations of transformation temperatures with the vibration response measured through a heating cycle, that heat-treated superelastic Nitinol can be accurately characterised by DSC.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Feeney, Dr Andrew and Lucas, Professor Margaret
• Authors: Feeney, A., and Lucas, M.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Copyright Holders: Copyright © 2015 The Authors
• Publisher Policy: Reproduced with permission of Authors

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