Abstract
Shape memory alloys (SMAs) are employed in innovative applications experiencing millions of cycles during their
lifetime. The existing failure criteria are purely phenomenological based on macroscopic experimental results and ignore
their complex microstructure. The proposed paper presents a two-scale fatigue criterion based on the elastic shakedown of
the austenitic and martensitic grains of the Dang Van - Papadopoulos class. The underlying assumptions and predictions
are discussed on a series of novel experiments and compared with results from literature.
Conclusions and Perspectives
This paper has investigated the elastic shakedown behavior of SMA materials and has presented the extension of the DV
high cycle fatigue criterion to SMAs and opens a novel way to analyze the onset of damage for materials involving phase
change. The analysis also open a realm of new questions ranging from additional insight into microscopic deformation
and damage mechanisms at the phase boundaries to innovative methods for the fast identification of fatigue limits, such
as infrared thermography measurements.
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