Strain field measurements in polycrystalline tantalum
Résumé
The unterstanding and the local quantification of surface strain distribution is a key element of crack initiation analysis. Experiments following up the local strain distribution have been carried out, based on the construction of several hundred micrometers wide strain maps ; and using gratings of regularly spaced micrometric markers deposited by lithography. The strain maps are computed using a specific routine, allowing to quantify the local strain distribution at the grain scale for different interrupted tensile loads.
Domaines
Matériaux
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Colas-Finot-Flouriot_21eme_congres_de_mecanique_Bordeaux_2013_6_p.pdf (3.34 Mo)
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