Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 41, Issue 1, Pages 121-129Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2020.07.065
Keywords
Ceramic matrix composites (CMCs); Electrical resistivity; Acoustic emission spectra; Tensile tests; Damage monitoring
Categories
Funding
- Centre National de Recherche Scientifique (CNRS)
- Commissariat a Penergie atomique et aux energies alternative (CEA)
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Three ceramic matrix composites (CMCs) were characterized in tension to further develop and understand the data provided by electrical resistance measurements. The observed changes in electrical resistance were compared to acoustic emission spectra and classical unloading/reloading cycles. A model was proposed to predict the evolution of resistance as a function of the damage state of the three composites, providing accurate results for materials with different mechanical and physical behaviors.
In order to further develop and understand the data provided by electrical resistance measurements, three ceramic matrix composites (CMCs) were characterized in tension. The observed changes of the electrical resistance were compared to the acoustic emission spectra, another commonly used damage monitoring method, as well as the classical interposed unloading/reloading cycles. A model was then proposed in order to predict the evolution of the resistance as a function of the damage state of the three composites. The proposed model provides accurate results for the three materials which, although they all belong to the CMC family, display different mechanical and physical behaviors.
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