Nonlinear Behavior of Ceramic-Matrix Composites

Chapter 1 Introduction to CMCs
1.1 Application background of CMCs
1.2 Nonlinear damage behavior of ceramic-matrix composites under tensile loading
1.2.1 Unidirectional CMCs
1.2.2 Cross-ply CMCs
1.2.3 2D CMCs
1.2.4 2.5D CMCs
1.2.5 3D CMCs
1.3 Nonlinear damage behavior of ceramic-matrix composites under fatigue loading
1.3.1 Unidirectional CMCs
1.3.2 Cross-ply CMCs
1.3.3 2D CMCs
1.3.4 2.5D CMCs
1.3.5 3D CMCs
1.4 Effect of strain rate on nonlinear damage behavior of ceramic-matrix composites
1.5 Effect of temperature on nonlinear damage behavior of ceramic-matrix composites
1.6 Effect of environmental attack on nonlinear damage behavior of ceramic-matrix composites
1.7 Dynamic nonlinear damage behavior of ceramic-matrix composites
1.8 Nonlinear damage analysis of CMC components
1.9 Conclusion
References

Chapter 2 Damage mechanisms and models of ceramic-matrix composites
2.1 Introduction
2.2 Matrix cracking
2.2.1 Non-steady state first matrix cracking
2.2.2 Steady-state first matrix cracking
2.2.3 Matrix multiple cracking
2.3 Interface debonding and slip
2.3.1 Interface debonding
2.3.1 Interface slip
2.4 Fiber failure
2.4.1 Global Load Sharing
2.4.2 Local Load Sharing
2.5 Conclusion
References

Chapter 3 Nonlinear damage behavior of ceramic-matrix composites under tensile loading
3.1 Introduction
3.2 Nonlinear constitutive model
3.3 Experimental comparisons
3.3.1 Unidirectional CMCs
3.3.2 Cross-ply CMCs
3.3.3 2D CMCs
3.3.4 2.5D CMCs
3.3.5 3D CMCs
3.4 Conclusion
Reference

Chapter 4 Nonlinear damage behavior of ceramic-matrix composites under cyclic fatigue loading
4.1 Introduction
4.2 Nonlinear constitutive model
4.3 Experimental comparisons
4.3.1 Unidirectional CMCs
4.3.2 Cross-ply CMCs
4.3.3 2D CMCs
4.3.4 2.5D CMCs
4.3.5 3D CMCs
4.4 Conclusions
References

Chapter 5 Strain-rate dependent nonlinear damage behavior of ceramic matrix composites
5.1 Introduction
5.2 Nonlinear constitutive model
5.3 Experimental comparisons
5.3.1 Unidirectional CMCs
5.3.2 Cross-ply CMCs
5.3.3 2D CMCs
5.3.4 2.5D CMCs
5.3.5 3D CMCs
5.4 Conclusion
Reference

Chapter 6 Stochastic loading dependent nonlinear damage behavior of ceramic-matrix composites
6.1 Introduction
6.2 Nonlinear constitutive model
6.3 Results and discussion
6.3.1 Effect of fiber volume on nonlinear damage behavior
6.3.2 Effect of interface shear stress on nonlinear damage behavior
6.3.3 Effect of interface debonding energy on nonlinear damage behavior
6.3.4 Effect of saturation matrix crack spacing on nonlinear damage behavior
6.3.5 Effect of fiber strength on nonlinear damage behavior
6.4 Experimental comparisons
6.4.1 Unidirectional CMCs
6.4.2 Cross-ply CMCs
6.4.3 2D CMCs
6.4.42.5D CMCs
6.4.5 3D CMCs
6.5 Conclusion
References

Chapter 7 Time-dependent nonlinear damage behavior of ceramic matrix composites
7.1 Introduction
7.2 Time-dependent damage models
7.3 Time-dependent nonlinear constitutive model
7.4 Results and discussion
7.4.1 Effect of fiber volume on time-dependent nonlinear damage behavior
7.4.2 Effect of fiber radius on time-dependent nonlinear damage behavior
7.4.3 Effect of matrix Weibull modulus on time-dependent nonlinear damage behavior
7.4.4 Effect of matrix crack characteristic stress on time-dependent nonlinear damage behavior
7.4.5 Effect of matrix crack saturation spacing on time-dependent nonlinear damage behavior
7.4.6 Effect of interface shear stress on time-dependent nonlinear damage behavior
7.4.7 Effect of interface debonding energy on time-dependent nonlinear damage behavior
7.4.8 Effect of fiber strength on time-dependent nonlinear damage behavior
7.4.9 Effect of fiber Weibull modulus on time-dependent nonlinear damage behavior
7.5 Experimental comparisons
References

Chapter 8 Effect of pre-exposure on nonlinear damage behavior of ceramic-matrix composites
8.1 Introduction
8.2 Nonlinear constitutive model
8.3 Results and discussion
8.3.1 Effect of pre-exposure temperature on nonlinear damage behavior
8.3.2 Effect of pre-exposure time on nonlinear damage behavior
8.3.3 Effect of interface shear stress on nonlinear damage behavior
8.3.4 Effect of fiber strength on nonlinear damage behavior
8.3.5 Effect of fiber Weibull modulus on nonlinear damage behavior
8.4 Experimental comparisons
8.4.1 Mini-CMCs
8.4.2 2D CMCs
8.4.3 2.5D CMCs
8.4.4 3D CMCs
Conclusion
References

Chapter 9 Effect of thermal fatigue on nonlinear damage behavior of ceramic-matrix composites
9.1 Introduction
9.2 Nonlinear constitutive model
9.3 Results and discussion
9.3.1 Effect of thermal fatigue temperature on nonlinear damage behavior
9.3.2 Effect of thermal fatigue cycle number on nonlinear damage behavior
9.3.3 Effect of fiber volume on nonlinear damage behavior
9.3.4 Effect of interface shear stress on nonlinear damage behavior
9.3.5 Effect of fiber strength on nonlinear damage behavior
9.3.6 Effect of fiber Weibull modulus on nonlinear damage behavior
9.4 Experimental comparisons
9.4.1. Unidirectional CMCs
9.4.2 2D CMCs
9.4.3 3D CMCs

Ceramic-matrix composites (CMCs) are high-temperature structural materials, with outstanding advantages such as high specific strength, high specific modulus, high temperature resistance and good thermal stability, which play a crucial role in the development of high thrust weight ratio aero engines. The critical nature of the application of these advanced materials makes complete characterization a necessity. Designers must have information pertaining to not only the strength of the material, but also its fatigue and damage characteristics. Nonlinear Damage Behavior of Ceramic Matrix Composites will help the reader [researchers, material scientists and design engineers] to understand more deeply about the damage mechanisms inside CMCs, in order to better design components used in aeronautics and astronautics. Key areas addressed in the book include: the nonlinear damage behavior of ceramic-matrix composites, including damage mechanisms and models, nonlinear damage behavior of ceramic-matrix composites under tensile and fatigue loading, strain-rate dependent, stochastic loading dependent, and time dependent nonlinear damage behavior, and the effect of pre-exposure and thermal fatigue on non-linear damage behavior of ceramic-matrix composites.

• Comprehensive coverage of damage mechanisms and models under tensile and cyclic fatigue loading, which ultimately control nonlinear behavior
• Covers nonlinear damage analysis of CMC components and experimental observation of damage evolution
• Provides extensive knowledge on fracture mechanic principles used in the design of aerospace propulsion systems

Academic and industrial researchers, materials scientists and design engineers working on in aeronautics and the fracture mechanics of ceramics and ceramic matrix composites