本书论述了切口敏感度因子和切口强度的估算公式在结构的强度设计时选用材料、细节设计和安全性评估等方面的实用意义和一般原则。全书通过对切口件应力应变分析和材料切口敏感性理论的介绍，给出了适用于包括切口件、裂纹件和光滑试件的断裂准则。本书为工程技术人员在结构设计中选用材料和进行强度校核提供了有用工具，也为材料研究工作者改善材料的性能提供了依据，同时，本书也可作为材料、机械类研究生教学的参考用书。

本书通过对切口件应力应变分析和材料切口敏感性理论的介绍，给出了适用于包括切口件、裂纹件和光滑试件的断裂准则，主要涉及切口件在拉、弯、扭、压条件下的低应力脆断准则和强度问题，也对产生低应力脆断的内、外部条件，如环境温度、加载速率等进行了探讨，涵盖钢铁、非铁金属、陶瓷、玻璃、高分子材料和复合材料等多种材料。

本书为工程技术人员在结构设计中选用材料和进行强度校核提供了有用工具，也为材料研究工作者改善材料的性能提供了依据，同时，本书也可作为材料、机械类研究生教学的参考用书。

Preface

Chapter 1 General Introduction

 1.1 Purpose and Importance of Failure Research

 1.2 Main Considerations in Failure Research

 1.3 Research on Notch Strength of Materials

 1.4 Outline of the Present Book

 1.5 Concluding Remarks

 References

Chapter 2 Fracture Mechanics of Notched Elements

 2.1 Introduction

 2.2 Notch Stress and Strain Analysis

 2.3 Criterion for Crack Initiation

 2.4 Fracture Criteria of Notched Elements

 2.5 Quantitative Evaluation of Notch Sensitivity of Materials

 2.6 Notch Strength and Fracture Toughness

 2.7 Notch Strength Diagram of Materials

 2.8 Concluding Remarks

 References

Chapter 3 Notch Strength and Notch Sensitivity of Steels

Chapter 4 Notch Strength and Notch Sensitivity of Cast Irons

Chapter 5 Tensile Notch Strength and Notch Sensitivity of Nonferrous Alloys

Chapter 6 Notch Strength of Ceramics under Bending

Chapter 7 Notch Strength of Ceramics under Tension

Chapter 8 Notch Strength of Brittle Materials under Torsion

Chapter 9 Notch Strength of Ceramic under Compression

Chapter 10 Fracture Criterion for Ceramic Notched Elements under Combined Tension/Torsion

Chapter 11 Notch Strength of Ceramics at High Loading Speeds

Chapter 12 Notch Strength of Ceramics at Elevated Temperatures

Chapter 13 Notch Strength and Notch Sensitivity of PMMA Glasses

Chapter 14 Fracture and Strength of Notched Elements of Composites

Index