Issue 70

G. Costanza et alii, Frattura ed Integrità Strutturale, 70 (2024) 257-271; DOI: 10.3221/IGF-ESIS.70.15

Exploring the elastocaloric effect of Shape Memory Alloys for innovative biomedical devices: a review

Girolamo Costanza, Ilaria Porroni, Maria Elisa Tata Industrial Engineering Department, University of Rome “Tor Vergata”, Italy costanza@ing.uniroma2.it, https://orcid.org/0000-0001-7463-1647 ilariaporroni95@gmail.com, https://orcid.org/0009-0007-2560-2357 elisa.tata@uniroma2.it, https://orcid.org/0000-0003-4111-9991

Citation: Costanza, G., Porroni, I., Tata, M. E., Exploring the elastocaloric effect of Shape Memory Alloys for innovative biomedical devices: a review, Frattura ed Integrità Strutturale, 70 (2024) 257-271.

Received: 24.06.2024 Accepted: 28.08.2024 Published: 17.09.2024 Issue: 10.2024

Copyright: © 2024 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

K EYWORDS . SMA, Innovative applications, Elastocaloric effect, Thermal microdevices, Compact refrigeration.

I NTRODUCTION

hape Memory Alloys (SMA) are widely recognized for their ability to revert to the original shape upon changes in temperature or mechanical stress. In recent years, due to increasing environmental concerns, they have garnered growing interest for their ability to dissipate and capture heat because of martensitic phase transformation (MT) when loads are exerted and relieved [1]. The mentioned unique property, also known as elastocaloric effect (EC), found an innovative application in the micro cooling sector, where eco-friendly compact cooling methods have shown the capability to supersede conventional cooling systems that rely on synthetic coolants, which are responsible for high energy consumption and greenhouse gas emissions. The EC can be categorized based on the external fields used to activate it. Primarily, three categories can be distinguished: 1) Stress-induced EC: the most common, where mechanical deformation causes the phase change; 2) Magnetic field-induced EC: observed in some ferromagnetic SMA; S

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