本书系统地介绍了材料微尺度力学行为的尺寸效应实验现象，重点介绍了几种具有代表性的微尺度应变梯度塑性理论及对微尺度实验现象的解释，以及对裂纹尖端微尺度范围内解理断裂的应用。此外，还融会贯通地介绍了国内外学者的原创性工作和创新性学术思想。
全书共8章。第1章介绍了应变梯度塑性理论的应用背景及经典微极理论；第2章介绍了金属材料典型的微尺度力学实验现象；第3至7章介绍了几种典型的应变梯度理论及其应用；第8章介绍了应变梯度理论在微观断裂力学中的应用。
本书适合从事固体微尺度力学、先进材料的微结构设计与力学性能优化、微机电和微电子元件力学行为研究的科技工作者及工程师使用和参考，也可供力学专业及材料专业的高年级本科生和研究生阅读参考。

Preface to the USTC Alumnis Series
Preface
1Introduction
1.1Brief introduction of experimental observations
1.2An overview of strain gradient plasticity theory
1.3Micro-polar theory
2Micro-scale experiments
2.1Torsion experiments on copper wires
2.2Micro-meter thin-beam bending
2.3Micro-meter particle reinforced metal matrix composite
2.4Micro and nano-indentation
3Theories proposed by Fleck and Hutchinson
3.1Couple stress theory (CS)
3.2Strain gradient (SG) theory proposed by Fleck and Hutchinson (1997)
3.3Torsion of thin wiresPreface to the USTC Alumnis Series
Preface
1Introduction
1.1Brief introduction of experimental observations
1.2An overview of strain gradient plasticity theory
1.3Micro-polar theory
2Micro-scale experiments
2.1Torsion experiments on copper wires
2.2Micro-meter thin-beam bending
2.3Micro-meter particle reinforced metal matrix composite
2.4Micro and nano-indentation
3Theories proposed by Fleck and Hutchinson
3.1Couple stress theory (CS)
3.2Strain gradient (SG) theory proposed by Fleck and Hutchinson (1997)
3.3Torsion of thin wires
3.4Bending of thin beams
3.5Micro-indentation hardness
3.6Size effects in particle reinforced metal matrix composites
4MSG and TNT theories
4.1A law for strain gradient plasticity
4.2Deformation theory of MSG
4.3Bending of thin beams
4.4Torsion of thin wires
4.5Micro-indentation hardness
4.6Size effects in the particle-reinforced metal matrix composit
4.7Taylor-based non-local theory of plasticity (TNT)
5C-W strain gradient plasticity theory
5.1A hardening law for strain gradient plasticity theory
5.2C-W couple-stress strain gradient plasticity theory
5.3Verification of C-W couple-stress strain gradient plasticity theory
5.4C-W strain gradient plasticity theory
5.5Thin wire torsion and ultra-thin beam bend
5.6Micro-indentation hardness
5.7Size effects in particle reinforced metal-matrix composites
6Strain curl theory
6.1The continuum theory of dislocation
6.2Plastic strain curl theory
6.3Finite element simulation of micro-indentation tests
7Strain gradient theory based on energy non-local model
7.1Classical non-local theory of elasticity
7.2A new framework of non-local theory
7.3Constitutive equations of strain gradient theory
7.4Thin wire torsion and ultra-thin beam bend
7.5Analysis of micro-indentation
8Cleavage fracture near crack tip
8.1Steady-state crack growth and work of fracture for solids characterized by strain gradient plasticity
8.2Fracture in MSG plasticity
8.3Application of C-W strain gradient plasticity on the cleavage fracture of crack tip
8.4Prediction of strain-curl theory on plane-strain crack tip field

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