Deformation infrared calorimetry for materials characterization applied to study cyclic superelasticity in NiTi wires

0563585 - FZÚ 2023 RIV GB eng J - Journal Article
Alarcón Tarquino, Eduardo - Heller, Luděk
Deformation infrared calorimetry for materials characterization applied to study cyclic superelasticity in NiTi wires.
Materials and Design. Roč. 199, Feb (2021), č. článku 109406. ISSN 0264-1275. E-ISSN 1873-4197
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR GA18-03834S; GA ČR(CZ) GA20-14114S
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : heat Sources * deformation calorimetry * NiTi wires * strain Localization * superelasticity * functional fatigue
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 9.417, year: 2021
Method of publishing: Open access

In this article, we introduce the Deformation Infrared Calorimetry (DIRC) technique for resolving spatial distributions of heat and work in samples subjected to uniaxial loading under isothermal conditions. Heat and work distributions are computed from synchronized temperature and strain fields obtained by infrared thermography (IRT) and digital image correlation (DIC). The DIRC data acquisition and processing are described in the first part of the article. Then, we show the relevance and usage of DIRC by employing it to characterize the cyclic evolution of the thermomechanical response of a superelastic NiTi wire single bondtermed functional fatigue. Particularly, we evaluated the evolution of the heat, work, and internal energy changes upon the repeated propagation of stress-induced martensitic transformations (SIMTs) shear-bands, producing a highly heterogeneous deformation scenario.

Permanent Link: https://hdl.handle.net/11104/0335495