Characterisation of the transverse mechanical properties of carbon/carbon composites by spherical indentation

Abstract : The mechanical characterisation of the carbon/carbon composite in the transverse direction is essential for the design of braking discs. This paper presents a technique based on spherical indentation to identify the mechanical behaviour of such materials in the transverse direction. After the presentation of the material properties as determined from static and fatigue compression tests, the indentation technique is described in detail. The characterisation technique used takes into consideration the transverse isotropy of these materials. The method used allows to identify the material behaviour in elastic and inelastic fields. Characterisation of elastic parameters is carried out after identification of the Hertz law in the unloading indentation cycles. The hardening parameters and the elastic limit are identified by expressing the law of Hertz in strain/stress form. The identified parameters are used in a simulation of an indentation test by finite element method. A good agreement is found between numerical and experimental results.
Document type :
Journal articles
Complete list of metadatas

Cited literature [29 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01611612
Contributor : Imt Mines Albi Ecole Nationale Supérieure Des Mines d'Albi-Carmaux <>
Submitted on : Wednesday, July 4, 2018 - 4:47:54 PM
Last modification on : Friday, January 10, 2020 - 9:09:45 PM
Long-term archiving on: Monday, October 1, 2018 - 2:11:56 PM

File

characterization-of-the-transv...
Files produced by the author(s)

Identifiers

Citation

Marie Poitrimolt, Mohammed Cheikh, Gérard Bernhart, Vincent Velay. Characterisation of the transverse mechanical properties of carbon/carbon composites by spherical indentation. Carbon, Elsevier, 2014, 66, p. 234-245. ⟨10.1016/j.carbon.2013.08.063⟩. ⟨hal-01611612⟩

Share

Metrics

Record views

181

Files downloads

145