A unified approach to thermo-mechano-caloric-characterization of elastocaloric materials
This paper presents a novel approach to characterizing the relevant mechanical, thermal and caloric properties of elastocalorics material in a single testing device. Usually, tensile experiments are performed to determine the rate- and process-depending stress/strain behavior of nickel-titanium-base...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | JPhys Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2515-7655/acfb39 |
| _version_ | 1797660673958739968 |
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| author | Franziska Louia Nicolas Michaelis Andreas Schütze Stefan Seelecke Paul Motzki |
| author_facet | Franziska Louia Nicolas Michaelis Andreas Schütze Stefan Seelecke Paul Motzki |
| author_sort | Franziska Louia |
| collection | DOAJ |
| description | This paper presents a novel approach to characterizing the relevant mechanical, thermal and caloric properties of elastocalorics material in a single testing device. Usually, tensile experiments are performed to determine the rate- and process-depending stress/strain behavior of nickel-titanium-based shape memory alloys and potentially other elastocaloric materials made from metallic alloys. These tests are relevant for, e.g., characterization of hysteresis properties and subsequent calculation of mechanical work input. In addition, simultaneous observation with an infrared camera is useful to understand temperature evolution and maximum temperature changes achievable during the loading/unloading process. Characterization of the caloric properties of the materials determines latent heats and, together with the mechanical work, also the material coefficient of performance. It is typically carried out via differential scanning calorimetry (DSC), which is performed in a separate device and requires a second experiment with different types of samples. Furthermore, DSC measurements do not reflect the way mechanically induced phase transformations trigger the release and absorption of latent heats as it is the case for elastocalorics. In order to provide a more consistent understanding of the relevant elastocaloric material properties, we here present a novel method that (a) allows for a systematic determination of load-dependent latent heats and (b) introduces a comprehensive testing setup and suitable testing routine to determine the mechanical, thermal and caloric parameters in the same experimental device and with the same sample, thus greatly simplifying the overall procedure. |
| first_indexed | 2024-03-11T18:33:18Z |
| format | Article |
| id | doaj.art-cdf57c4eed084977b2a7e2f56b5e2c3d |
| institution | Directory Open Access Journal |
| issn | 2515-7655 |
| language | English |
| last_indexed | 2024-03-11T18:33:18Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | JPhys Energy |
| spelling | doaj.art-cdf57c4eed084977b2a7e2f56b5e2c3d2023-10-13T08:05:00ZengIOP PublishingJPhys Energy2515-76552023-01-015404501410.1088/2515-7655/acfb39A unified approach to thermo-mechano-caloric-characterization of elastocaloric materialsFranziska Louia0Nicolas Michaelis1Andreas Schütze2Stefan Seelecke3https://orcid.org/0000-0003-1018-247XPaul Motzki4https://orcid.org/0000-0001-9903-2018Intelligent Material Systems Lab, Department of Systems Engineering, Department of Materials Science and Engineering, Saarland University , Saarbrücken, GermanyHYDAC Fluidtechnik GmbH , Sulzbach/Saar, GermanyLab of Measurement Technology, Saarland University , Saarbrücken, GermanyIntelligent Material Systems Lab, Department of Systems Engineering, Department of Materials Science and Engineering, Saarland University , Saarbrücken, GermanyIntelligent Material Systems Lab, Department of Systems Engineering, Department of Materials Science and Engineering, Saarland University , Saarbrücken, Germany; Center for Mechatronics and Automation Technology—ZeMA gGmbH , Saarbrücken, GermanyThis paper presents a novel approach to characterizing the relevant mechanical, thermal and caloric properties of elastocalorics material in a single testing device. Usually, tensile experiments are performed to determine the rate- and process-depending stress/strain behavior of nickel-titanium-based shape memory alloys and potentially other elastocaloric materials made from metallic alloys. These tests are relevant for, e.g., characterization of hysteresis properties and subsequent calculation of mechanical work input. In addition, simultaneous observation with an infrared camera is useful to understand temperature evolution and maximum temperature changes achievable during the loading/unloading process. Characterization of the caloric properties of the materials determines latent heats and, together with the mechanical work, also the material coefficient of performance. It is typically carried out via differential scanning calorimetry (DSC), which is performed in a separate device and requires a second experiment with different types of samples. Furthermore, DSC measurements do not reflect the way mechanically induced phase transformations trigger the release and absorption of latent heats as it is the case for elastocalorics. In order to provide a more consistent understanding of the relevant elastocaloric material properties, we here present a novel method that (a) allows for a systematic determination of load-dependent latent heats and (b) introduces a comprehensive testing setup and suitable testing routine to determine the mechanical, thermal and caloric parameters in the same experimental device and with the same sample, thus greatly simplifying the overall procedure.https://doi.org/10.1088/2515-7655/acfb39elastocaloric effectsuperelasticNiTiexperimentallatent heatsload-dependency |
| spellingShingle | Franziska Louia Nicolas Michaelis Andreas Schütze Stefan Seelecke Paul Motzki A unified approach to thermo-mechano-caloric-characterization of elastocaloric materials JPhys Energy elastocaloric effect superelastic NiTi experimental latent heats load-dependency |
| title | A unified approach to thermo-mechano-caloric-characterization of elastocaloric materials |
| title_full | A unified approach to thermo-mechano-caloric-characterization of elastocaloric materials |
| title_fullStr | A unified approach to thermo-mechano-caloric-characterization of elastocaloric materials |
| title_full_unstemmed | A unified approach to thermo-mechano-caloric-characterization of elastocaloric materials |
| title_short | A unified approach to thermo-mechano-caloric-characterization of elastocaloric materials |
| title_sort | unified approach to thermo mechano caloric characterization of elastocaloric materials |
| topic | elastocaloric effect superelastic NiTi experimental latent heats load-dependency |
| url | https://doi.org/10.1088/2515-7655/acfb39 |
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