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Effects of surface finish and mechanical training on Ni-Ti sheets for elastocaloric cooling [elektronski vir]Engelbrecht, Kurt ...Elastocaloric cooling has emerged as a promising alternative to vapor compression in recent years. Although the technology has the potential to be more e ffi cient than current technologies, there ... are many technical challenges that must be overcome to realize devices with high performance and acceptable durability. We study the e ff ects of surface finish and training techniques on dog bone shaped polycrystalline samples of NiTi. The fatigue life of several samples with four di ff erent surface finishes was measured and it was shown that a smooth surface, especially at the edges, greatly improved fatigue life. The e ff ects of training both on the structure of the materials and the thermal response to an applied strain was studied. The load profile for the first few cycles was shown to change the thermal response to strain, the structure of the material at failure while the final structure of the material was weakly influenced by the surface finish.Source: APL materials [Elektronski vir]. - ISSN 2166-532X (Vol. 4, 2016, f. 1-6)Type of material - e-articlePublish date - 2016Language - englishCOBISS.SI-ID - 14774555
Author
Engelbrecht, Kurt |
Tušek, Jaka |
Sanna, Simone |
Eriksen, Dan |
Mishin, Oleg V. |
Bahl, Christian Robert Haffenden |
Pryds, Nini
Topics
elastocaloric effect |
surface finish |
colling |
fatigue life |
shape memory material |
elastokalorični efekt |
kvaliteta površine |
hlajenje |
doba trajanja |
material z oblikovnim spominom
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Database name | Field | Year |
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Engelbrecht, Kurt | |
Tušek, Jaka | 29624 |
Sanna, Simone | |
Eriksen, Dan | |
Mishin, Oleg V. | |
Bahl, Christian Robert Haffenden | |
Pryds, Nini |
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