High-Temperature Mechanical Hysteresis in Ceramic-Matrix Composites

This book focuses on mechanical hysteresis behavior in different fiber-reinforced ceramic-matrix composites (CMCs), including 1D minicomposites, 1D unidirectional, 2D cross-ply, 2D plain-woven, 2.5D woven, and 3D needle-punched composites. Ceramic-matrix composites (CMCs) are considered to be the lightweight high-temperature materials for hot-section components in aeroengines with the most potential. To improve the reliability and safety of CMC components during operation, it is necessary to conduct damage and failure mechanism analysis, and to develop models to predict this damage as well as fracture over lifetime - mechanical hysteresis is a key damage behavior in fiber-reinforced CMCs. The appearance of hysteresis is due to a composite’s internal damage mechanisms and modes, such as, matrix cracking, interface debonding, and fiber failure. Micromechanical damage models and constitutive models are developed to predict mechanical hysteresis in different CMCs. Effects of a composite’s constituent properties, stress level, and the damage states of the mechanical hysteresis behavior of CMCs are also discussed. This book also covers damage mechanisms, damage models and micromechanical constitutive models for the mechanical hysteresis of CMCs. This book will be a great resource for students, scholars, material scientists and engineering designers who would like to understand and master the mechanical hysteresis behavior of fiber-reinforced CMCs.

1. Introduction, 2. Cyclic Mechanical Hysteresis Beahvior in 1D SiC/SiC minicomposites at Room Temperature, 3. High-Temperature Cyclic-Fatigue Mechanical Hysteresis Behavior in 2D Plain-Woven CVI SiC/SiC Composites, 4. High-Temperature Cyclic-Fatigue Mechanical Hysteresis Behavior in 2.5D Woven SiC/SiC composites, 5. High-Temperature Static Fatigue Mechanical Hysteresis Behavior in 2D Plain-Woven CVI C/[Si-B-C] Composites, 6. High-Temperature Dwell-Fatigue Mechanical Hysteresis Behavior in Cross-Ply SiC/MAS Composites, 7. Mechanical Hysteresis Behavior in 3D Needle-Punched C/SiC composite at Room Temperature, 8. Mechanical Hysteresis Behavior in CMCs under Multiple Stage Loading

Longbiao Li is a lecturer of the College of Civil Aviation at the Nanjing University of Aeronautics and Astronautics. Dr. Li’s research focuses on the vibration, fatigue, damage, fracture, reliability, safety and durability of aircraft and aero engine. In this research area, he is the first author of 183 SCI journal publications, 8 monographs, 4 edited books, 5 textbooks, 3 book chapters, 30 Chinese Patents, 2 US Patents, 2 Chinese Software Copyright, and more than 20 refereed conference proceedings. He has been involved in different projects related to structural damage, reliability, and airworthiness design for aircraft and aero engines, supported by the Natural Science Foundation of China, COMAC Company, and AECC Commercial Aircraft Engine Company.