Thermoelastic and thermoplastic effects investigated in steel, polyamide, and shape memory alloys

Elzbieta Pieczyska; Stefan Gadaj; Wojciech Nowacki

doi:10.1117/12.459598

15 March 2002 Thermoelastic and thermoplastic effects investigated in steel, polyamide, and shape memory alloys

Elzbieta Pieczyska, Stefan Gadaj, Wojciech Nowacki

Proceedings Volume 4710, Thermosense XXIV; (2002) https://doi.org/10.1117/12.459598
Event: AeroSense 2002, 2002, Orlando, FL, United States

Abstract

This research is an experimental confirmation of the theoretical model, presented by M.G. Beghi, C.E. Bottani and G. Cagliotti, realized due to the contact less method of temperature measurement and conversion. The effects of thermomechanical coupling occurring in austenitic steel, polyamide and shape memory alloys were examined. The change of character of the samples temperature was applied as a criterion for the limit between the elastic and plastic regimes. The thermal effects concomitant with thermoelastic unloading were also quite precisely evaluated. The obtained results indicate on both qualitative and quantitative differences between thermomechanical behaviors of the materials subjected to deformation. TiNi shape memory alloy was tested both at room and at elevated temperatures. The temperature distribution on the surface of specimen examined at ambient temperature was uniform, while for the specimen deformed at elevated temperature the areas of higher temperature were registered. There are probably the regions of creation and developing of the new - martensite phase.

Citation Download Citation

Elzbieta Pieczyska, Stefan Gadaj, and Wojciech Nowacki "Thermoelastic and thermoplastic effects investigated in steel, polyamide, and shape memory alloys", Proc. SPIE 4710, Thermosense XXIV, (15 March 2002); https://doi.org/10.1117/12.459598

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