The importance of damage and slow crack growth in the creep behavior of ceramic matrix composites

1999 ◽  
Vol 8 (1) ◽  
pp. 77-85 ◽  
Author(s):  
Jean-Louis Chermant ◽  
Guillaume Boitier
Keyword(s):  
Crack Growth ◽  
Creep Behavior ◽  
Slow Crack Growth ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites

Prediction of Lifetime in Static Fatigue at High Temperatures for Ceramic Matrix Composites

2010 ◽  
Vol 112 ◽  
pp. 129-140 ◽  
Author(s):  
O. Loseille ◽  
Jacques Lamon
Keyword(s):  
Crack Growth ◽  
High Temperatures ◽  
Slow Crack Growth ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Woven Composites ◽  
Static Fatigue ◽  
Matrix Composites ◽  
Random Load ◽  
Delayed Failure

Previous works have shown that ceramic matrix composites are sensitive to delayed failure during fatigue in oxidizing environments. The phenomenon of slow crack growth has been deeply investigated on single fibers and multifilament tows in previous papers. The present paper proposes a multiscale model of failure driven by slow crack growth in fibers, for 2D woven composites under a constant load. The model is based on the delayed failure of longitudinal tows. Additional phenomena involved in the failure of tows have been identified using fractographic examination of 2D woven SiC/SiC composite testspecimens after fatigue tests at high temperatures. Stochastic features including random load sharing, fiber overloading, fiber characteristics and fiber arrangement within the tows have been introduced using appropriate density functions. Rupture time predictions are compared to experimental data.

scholarly journals Fracture in Metallic Ribbon Reinforced Ceramic Matrix Composites

1992 ◽  
Vol 1 (3) ◽  
pp. 096369359200100
Author(s):  
Rajendra U Vaidya ◽  
K K Chawla ◽  
T K Lee ◽  
K N Subramanian
Keyword(s):  
Fracture Surface ◽  
Metallic Glass ◽  
Crack Growth ◽  
Glass Matrix ◽  
Slow Crack Growth ◽  
Amorphous Ribbon ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Glass Matrix Composite

The fracture surfaces of a metallic–glass (amorphous) ribbon reinforced glass–ceramic and metallic ribbon reinforced glass matrix composite were studied. The features observed in the fracture surface of the brittle matrix were interpreted in terms of fast and slow crack growth in these composites. The implications of the nature of this crack growth on the toughness of such composites was also investigated.

Subcritical crack growth mechanisms in ceramic matrix composites: experimental observations and modelling

2001 ◽  
Vol 16 (1/2/3) ◽  
pp. 132
Author(s):  
Charles A. Lewinsohn ◽  
Charles H Henager Jr ◽  
Charles F. Windisch ◽  
Edward P. Simonen ◽  
Russell H. Jones ◽  
...  
Keyword(s):  
Crack Growth ◽  
Subcritical Crack Growth ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Growth Mechanisms

Microstructure and Creep Behavior of Al2O3-SiC Ceramic Matrix Composites

1998 ◽  
Vol 159-160 ◽  
pp. 399-404
Author(s):  
Zhen-Yan Deng ◽  
Jian Lin Shi ◽  
Y.F. Zhang ◽  
Jing Kun Guo ◽  
Takayuki Kobayashi
Keyword(s):  
Creep Behavior ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Sic Ceramic

Creep Behavior and Modeling of SiC-Based PC Ceramic Matrix Composites with Glass Sealant in High Temperature Air

1998 ◽  
Vol 164-165 ◽  
pp. 197-200 ◽  
Author(s):  
Takashi Ishikawa ◽  
N. Suzuki ◽  
Ian J. Davies ◽  
M. Shibuya ◽  
T. Hirokawa ◽  
...  
Keyword(s):  
High Temperature ◽  
Creep Behavior ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites

Development of ASTM Test Standards for the Mode I Interlaminar Fracture Toughness (GIc--Crack Growth Resistance) of Ceramic Matrix Composites

2018 ◽  
Author(s):  
Frank Abdi ◽  
Jalees Ahmad ◽  
Saber DorMohammadi ◽  
Cody Godines ◽  
Stephen Gonczy ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
High Temperature ◽  
Crack Growth ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Crack Growth Resistance ◽  
Test Method ◽  
Mode I ◽  
Matrix Composites ◽  
Interlaminar Fracture

Ceramic matrix composite (CMC) materials are targeted for high temperature application in aircraft and power turbines, because of their low density and high-temperature thermo-mechanical properties, compared to conventional nickel super alloys. New test methods are needed for the assessment of the effects of delamination cracks on the structural integrity and life of CMC components. The ASTM C28 Fracture Toughness (Crack Growth Resistance – CGR) Working Group has drafted a standard test method for the “Mode I Interlaminar Fracture Tougness (GIc – Crack Growth Resistance) of Fiber-Reinforced Ceramic Matrix Composites (CMC) by Wedge Loading of a Double Cantilever Beam at Ambient Temperatures” The wedge loading method was developed to avoid the problems of high temperature bonding of loading blocks and hinges. The ASTM test standard details the scope, use, and application of the test method, interferences, test equipment, specimen geometry and preparation, test procedures, data interpretation and calculation, and reporting requirements for the new CMC CGR test method.

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