Study of the plastic deformation behaviour of ductile polymers: Use of the material key curves

S. Agnelli F. Baldi L. Castellani K. Pisoni M. Vighi Lucien Laiarinandrasana 1
1 MAT - Centre des Matériaux
Abstract : Material key curves are functions providing a relationship among load, displacement and crack size, and are used in fracture mechanics methods for ductile polymers. This work shows that the material key curves provide also a tool to distinguish among different deformational mechanisms involved in the fracture process and they reflect the constraint degree. Tests are carried out on an acrylonitrile-butadiene-styrene resin (ABS) as a model material, and different deformation mechanisms are induced by different temperatures and loading rates, up to impact conditions. Deformation mechanisms are investigated, for the first time on ABS, by tomography and the results are compared to more traditional imaging techniques as scanning and transmission electron microscopy.
Keywords : Material key curves Plastic deformation mechanisms Synchrotron Radiation Tomography ABS Load separation principle
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Article dans une revue
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01677854
Contributeur : Bibliothèque Umr7633 <>
Soumis le : lundi 8 janvier 2018 - 16:12:51
Dernière modification le : lundi 12 novembre 2018 - 10:58:37

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S. Agnelli, F. Baldi, L. Castellani, K. Pisoni, M. Vighi, et al.. Study of the plastic deformation behaviour of ductile polymers: Use of the material key curves. Mechanics of Materials, Elsevier, 2018, 117, pp.105-115. ⟨10.1016/j.mechmat.2017.11.002⟩. ⟨hal-01677854⟩

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