Interface of Ceramic-Matrix Composites: Design, Characterization, and Damage Effects

Description

The book "Interfaces of Ceramic-Matrix Composites" demonstrates the definition, function and type of the interface of ceramic-matrix composites and gives comprehensive investigations on the interface design, interface characterization, interface assessment, and interface damage law of both C/SiC and SiC/SiC ceramic-matrix composites subjected to tensile and fatigue loading at different testing conditions. Thereby, it helps material designers and engineers to better design ceramic-matrix composite components for applications. Cover Title Page Copyright Contents Preface Acknowledgments Chapter 1 Definition, Function, and Design of Interface in Ceramic‐Matrix Composites 1.1 Introduction 1.2 The Definition of Interface in Ceramic‐Matrix Composites 1.2.1 Non‐oxide CMCs 1.2.2 Oxide/Oxide CMCs 1.3 The Function of Interface in Ceramic‐Matrix Composites 1.3.1 Effect of Interphase on Sliding Resistance 1.3.2 Effect of Interphase on Thermal Misfit Stress 1.4 The Design of Interface in Ceramic‐Matrix Composites 1.4.1 PyC Interphase 1.4.2 BN Interphase 1.5 Conclusion References Chapter 2 Interface Characterization of Ceramic‐Matrix Composites 2.1 Introduction 2.2 Effect of Interface Properties on Tensile and Fatigue Behavior of Ceramic‐Matrix Composites 2.2.1 Theoretical Analysis 2.2.1.1 First Matrix Cracking Stress 2.2.1.2 Matrix Cracking Density 2.2.1.3 Fatigue Hysteresis‐Based Damage Parameters 2.2.2 Results and Discussion 2.2.2.1 Effect of the Interface Properties on First Matrix Cracking Stress 2.2.2.2 Effect of the Interface Properties on Matrix Cracking Density 2.2.2.3 Effect of the Interface Properties on the Fatigue Hysteresis‐Based Damage Parameters 2.2.3 Experimental Comparisons 2.2.3.1 First Matrix Cracking Stress 2.2.3.2 Matrix Cracking Density 2.2.3.3 Fatigue Hysteresis‐Based Damage Parameters 2.3 Effect of Pre‐exposure on Tensile Damage and Fracture of Ceramic‐Matrix Composites 2.3.1 Theoretical Analysis 2.3.1.1 Stress Analysis Considering Interface Oxidation and Fiber Failure 2.3.1.2 Matrix Multicracking Considering Interface Oxidation 2.3.1.3 Interface Debonding Considering Interface Oxidation 2.3.1.4 Fiber Failure Considering Interface and Fiber Oxidation 2.3.1.5 Tensile Stress–Strain Curves Considering Effect of Pre‐exposure 2.3.2 Results and Discussion 2.3.2.1 Effect of Pre‐exposure Temperature on Tensile and Damage Process 2.3.2.2 Effect of Pre‐exposure Time on Tensile and Damage Processes 2.3.2.3 Effect of Interface Shear Stress on Tensile and Damage Processes 2.3.2.4 Effect of Fiber Strength on Tensile and Damage Processes 2.3.2.5 Effect of Fiber Weibull Modulus on Tensile and Damage Processes 2.3.3 Experimental Comparisons 2.4 Effect of Interface Properties on Lifetime of Ceramic‐Matrix Composites 2.4.1 Theoretical Analysis 2.4.1.1 Life Prediction Model at Room Temperature 2.4.1.2 Life Prediction Model at Elevated Temperatures in the Oxidative Environment 2.4.2 Experimental Comparisons 2.4.2.1 Life Prediction at Room Temperature 2.4.2.2 Life Prediction at Elevated Temperature 2.5 Conclusion References Chapter 3 Interface Assessment of Ceramic‐Matrix Composites 3.1 Introduction 3.2 Relationships Between Interface Slip and Temperature Rising in CMCs 3.2.1 Hysteresis Theories 3.2.1.1 Case I 3.2.1.2 Case II 3.2.1.3 Case III 3.2.1.4 Case IV 3.2.2 Experimental Comparisons 3.2.2.1 Unidirectional CMCs 3.2.2.2 Cross‐Ply CMCs 3.2.2.3 2D CMCs 3.3 Interface Assessment of CMCs from Hysteresis Loops 3.3.1 Results and Discussion 3.3.1.1 Unidirectional C/SiC Composite 3.3.1.2 Cross‐Ply C/SiC Composite 3.3.1.3 2.5D C/SiC Composite 3.3.2 Experimental Comparisons 3.3.2.1 Unidirectional C/SiC Composite 3.3.2.2 Unidirectional SiC/CAS Composite 3.3.2.3 Unidirectional SiC/CAS‐II Composite 3.3.2.4 Cross‐Ply C/SiC Composite 3.3.2.5 2.5D C/SiC Composite 3.4 Conclusion References Chapter 4 Interface Damage Law of Ceramic‐Matrix Composites 4.1 Introduction 4.2 Interface Damage Law at Room Temperature 4.3 Interface Damage Law at Elevated Temperature in Inert Atmosphere 4.4 Interface Damage Law at Elevated Temperature in Air Atmosphere 4.4.1 1000 °C 4.4.2 1200 °C 4.4.3 1300 °C 4.5 Interface Damage Law at Elevated Temperature in Steam Atmosphere 4.5.1 1000 °C 4.5.2 1200 °C 4.6 Results and Discussion 4.6.1 Effect of Temperature, Oxidation, and Fiber Preforms on Interface Damage of CMCs 4.6.2 Comparisons of Interface Damage Between C/SiC and SiC/SiC Composites 4.7 Conclusion References Index EULA