Effect of the distribution of lip-shaped matrix cracks in continuous fibre reinforced ceramic matrix composites on failure progress under transverse tension

2020 ◽  
pp. 1-15
Author(s):  
Li Xiangping ◽  
Chen Xi ◽  
Zhang Hong ◽  
Liu Guangcheng
Keyword(s):  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Continuous Fibre ◽  
Matrix Cracks ◽  
Transverse Tension

Damping in Unidirectional and Cross-Ply Ceramic Matrix Composites With Matrix Cracks

2001 ◽  
Author(s):  
Victor Birman ◽  
Larry W. Byrd
Keyword(s):  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Interfacial Friction ◽  
Matrix Composites ◽  
Matrix Interface ◽  
Unidirectional Composites ◽  
Matrix Cracks ◽  
Dissipation Of Energy ◽  
Fiber Matrix Interface ◽  
Fiber Matrix

Abstract The paper elucidates the methods of estimating damping in ceramic matrix composites (CMC) with matrix cracks. Unidirectional composites with bridging matrix cracks and cross-ply laminates with tunneling cracks in transverse layers and bridging cracks in longitudinal layers are considered. It is shown that bridging matrix cracks may dramatically increase damping in unidirectional CMC due to a dissipation of energy along damaged sections of the fiber-matrix interface (interfacial friction). Such friction is absent in the case of tunneling cracks in transverse layers of cross-ply laminates where the changes in damping due to a degradation of the stiffness remain small. However, damping in cross-ply laminates abruptly increases if bridging cracks appear in the longitudinal layers.

Fracture behaviour of 2D-weaved, silica–silica continuous fibre-reinforced, ceramic–matrix composites (CFCCs)

2004 ◽  
Vol 71 (18) ◽  
pp. 2589-2605 ◽  
Author(s):  
N. Eswara Prasad ◽  
Sweety Kumari ◽  
S.V. Kamat ◽  
M. Vijayakumar ◽  
G. Malakondaiah
Keyword(s):  
Fracture Behaviour ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Continuous Fibre

ANALYSIS OF CERAMIC MATRIX COMPOSITES WITH BRIDGING CRACKS IN THE PRESENCE OF CREEP

1998 ◽  
Vol 22 (4B) ◽  
pp. 447-456
Author(s):  
V. Birman ◽  
L.W. Byrd
Keyword(s):  
Thermal Stresses ◽  
Tensile Load ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Effect Of Temperature ◽  
Uniaxial Tensile ◽  
Matrix Composites ◽  
Mechanical Loads ◽  
Aerospace Applications ◽  
Matrix Cracks

Ceramic matrix composites (CMCs) represent an attractive class of materials, particularly in aerospace applications where a combination of thermal and mechanical loads may present a challenge for a designer. An important feature of these materials is their ability to withstand damage without immediate failure. This emphasizes a significance of studies of damaged CMCs, particularly at high temperatures. In particular, the analysis of creep of CMCs with matrix cracks is important to accurately predict the response and reliability of such materials. The solution presented in this paper concentrates on creep in the presence of bridging cracks and uniaxial tensile load. Residual thermal stresses and the effect of temperature on the rate of creep are incorporated into the formulation.

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