3D Detection and Quantitative Characterization of Cracks in a Ceramic Matrix Composite Tube Using X-Ray Computed Tomography

Y. Chen, L. Gélébart, C. Chateau, M. Bornert, A. King, P. Aimedieu, C. Sauder

Research output: Contribution to journalArticlepeer-review

5 Citations (SciVal)

Abstract

Cracks play an essential role in the degradation of the thermomechanical behavior of ceramic matrix composites. However, characterizing their complex 3D geometries within a complex microstructure is still a challenge. This paper presents a series of procedures, based on X-ray tomographic images, to evaluate the applied 3D strains, including their through-thickness gradients, and to detect and quantify the induced crack networks in ceramic matrix composites. Digital volume correlation and some dedicated image processing algorithms are employed. A novel method is proposed to estimate the opening, orientation and surface area of the detected cracks. The proposed procedures are applied to the images of a SiC/SiC composite tube that has been tested in situ under uniaxial tension with synchrotron X-ray computed tomography.

Original languageEnglish
Pages (from-to)409-424
Number of pages16
JournalExperimental Mechanics
Volume60
Issue number3
DOIs
Publication statusPublished - 1 Mar 2020

Keywords

  • Ceramic matrix composites (CMCs)
  • Crack quantification
  • Damage mechanisms
  • X-ray computed tomography

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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