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An analysis of thermal gradient impact in thermal–mechanical fatigue testing

Abstract : Thermal–mechanical fatigue (TMF) testing is a good method to decrease the number of isothermal tests for non-isothermal behaviour laws identification. Based on experimental results of the TMF Standard European Working Group, this study aims to investigate the impact of thermal gradients on mechanical heterogeneity within the gage length specimen. The quality of the TMF test is examined by an energy criterion related to error bounds for nonlinear behaviour. A sensitivity analysis is then made for a given behaviour law identified on a TMF test to answer to the above question. Moreover the geometric instability phenomenon, already noticed by Sheffler and Coffin, is modelled herein.
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Soumis le : mardi 17 août 2010 - 11:26:57
Dernière modification le : jeudi 24 septembre 2020 - 18:30:04

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Vincent Maurel, Alain Köster, Luc Rémy. An analysis of thermal gradient impact in thermal–mechanical fatigue testing. Fatigue & Fracture of Engineering Materials & Structures, Wiley-Blackwell, 2010, 33, pp.473-489. ⟨10.1111/j.1460-2695.2010.01449.x⟩. ⟨hal-00509927⟩



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