Crack initiation and propagation in braided SiC/SiC composite tubes: Effect of braiding angle

Yang Chen, Lionel Gélébart, Camille Chateau, Michel Bornert, Andrew King, Cédric Sauder, Patrick Aimedieu

Research output: Contribution to journalArticlepeer-review

8 Citations (SciVal)

Abstract

Crack initiation and propagation in three braided SiC/SiC composite tubes with different braiding angles are investigated by in situ tensile tests with synchrotron micro-computed tomography. Crack networks are precisely detected after an image subtraction procedure based on Digital Volume Correlation. FFT based simulations are performed on the full-resolution 3D images to assess elastic stress/strain fields. Quantitative measurements of the crack geometries are performed using a novel method based on grey levels. The results show that braiding angle has no obvious effect on the location of crack onsets (initiation always occurs at tow interfaces), whereas it significantly affects the paths of crack propagation. This work provides an explicit demonstration of the crack propagation scenarios with respect to the mesoscopic fibre architectures.

Original languageEnglish
Pages (from-to)4403-4418
Number of pages16
JournalJournal of the European Ceramic Society
Volume40
Issue number13
Early online date11 May 2020
DOIs
Publication statusPublished - 31 Oct 2020

Keywords

  • Ceramic matrix composites
  • Crack detection
  • Crack propagation scenario
  • FFT simulation
  • In situ X-ray computed tomography

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Crack initiation and propagation in braided SiC/SiC composite tubes: Effect of braiding angle'. Together they form a unique fingerprint.

Cite this