목차

CHAPTER I. Review: Interfacial and Mechanical Properties of Composites after Various Aging via Electro-Micromechanical Evaluation 1
1. Introduction 3
1.1. Trends of aging of composites 3
1.2 Evaluation of aging of composites using micromechanical evaluation 5
1.3 Evaluation of aging of composites using nondestructive evaluation 7
2. Type and effect of various aging 9
2.1. Water/high humidity aging 9
2.2. Thermal aging 14
2.3. UV and chemical aging 16
2.4. Fatigue 19
3. Enhancing durability on aging 21
3.1. Matrix formulation 21
3.2. Addition of nanoparticle in matrix 22
3.3. Surface treatment 27
3.4. Repairing aged composites 30
4. Conclusions 32
References 33
CHAPTER II. Interfacial and Wetting Properties between Glass Fiber and Epoxy Resins with Different Pot Lifes 45
1. Introduction 47
2. Experimental 49
2.1. Materials and specimens 49
2.2. Methodologies 52
2.2.1. FT-IR and DSC test 52
2.2.2. Surface tension and energy measurements 53
2.2.3. Wetting and interfacial test 57
2.2.4. Practical tests: measurement of resin injection rate and description of the short beam test 59
3. Results and discussion 60
3.1. Chemical analysis of hardeners and measurement of residual enthalpy 60
3.2. The relationship between surface tension and wetting 65
3.3. The relationship between surface energy and interfacial properties 70
3.4. The relationship between wetting, interfacial property and practical experiment 76
4. Conclusions 81
References 82
CHAPTER III. Interfacial Properties and Water Resistance of Epoxy and CNT-Epoxy Adhesives on GFRP Composites 85
1. Introduction 87
2. Experimental 89
2.1. Materials and specimens 89
2.2. Methodologies 91
2.2.1 Wettability measurement 91
2.2.2. Experimental methods 93
3. Results and discussion 94
3.1. Interfacial aspects of the adhesive surfaces with different conditions 94
3.2. Mechanical tests for the different adhesives 105
3.3. AE analysis during lap shear testing 111
4. Conclusions 116
References 117
CHAPTER IV. Evaluation of Thermally-Aged Carbon Fiber/Epoxy Composites using Acoustic Emission, Electrical Resistance and Thermogram 121
1. Introduction 123
2. Experimental 125
2.1. Materials and specimens 125
2.2. Methodologies 126
2.2.1. Experimental methods 126
2.2.2. Evaluation of the interfacial properties of CFRC by AE and ER 128
2.2.3. Wettability and thermal measurement 129
2.2.4. ILSS measurements of CFRC by short beam and tensile tests 130
3. Results and discussion 131
3.1. Chemical analysis of surfaces for different thermal degradations 131
3.2. AE and ER evaluation of CFRC aging 133
3.3. Thermal and surface properties 140
3.4. Mechanical, interfacial properties and schematic modeling of CFRC after thermal Aging 145
3.5. Total discussions 152
4. Conclusions 153
References 154
CHAPTER V. New Evaluation of Interfacial and Mechanical Properties of Thermally Treated Pine/CFRP Composites using Electrical Resistance Measurement 158
1. Introduction 160
2. Experimental 162
2.1. Materials 162
2.2. Methodologies 163
2.2.1. Pine Thermal Treatments and Pine/CFRP Preparation 163
2.2.2. Wettability Measurement 166
2.2.3. Measurements of Mechanical and Interfacial Properties of Pine/CFRP Composites Combined with ER 167
3. Results and Discussion 168
3.1. Surface Characterization of Differently Thermal Treated Pines 168
3.2. Static Contact Angle of Thermally Treated Pine with Elapsing Time 172
3.3. Spreading and Wetting of Epoxy Resin on Thermal Treated Pine Surfaces 175
3.4. Mechanical Test of Pine and Pine/CFRP Composites with ER Measurement 179
4. Conclusions 189
References 190
CHAPTER VI. Advanced Interfacial Properties of Glass Fiber/Dopamine-Epoxy Composites using a Microdroplet Pull-out Test and Acoustic Emission 196
1. Introduction 198
2. Experimental 200
2.1. Materials and Specimens 200
2.2. Methodologies 201
2.2.1 FT-IR and DSC Test 201
2.2.2. Microdroplet Pull-out Test 202
2.2.3. AE Measurement for Damage Sensing 203
2.2.4. Mechanical Testing of Milled GFRCs 204
3. Results and discussion 207
3.1. Curing Calorie and Chemical Analysis of Epoxy Resins 207
3.2. Microdroplet Pull-out Test with Associated AE Measurements 211
3.3. Linear Regression on the Load versus AE Energy 218
3.4. Mechanical Properties of Milled GFRCs with Different Treatments 223
4. Conclusions 227
References 228
CHAPTER VII. Adhesion Properties of Glass Fiber/Epoxy Composites with Adding Air Bubbles for Sound Insulation 234
1. Introduction 236
2. Experimental 239
2.1. Materials and Specimens 239
2.2. Methodologies 243
3. Results and Discussion 248
3.1. Micro Solid-Borne Sounds from Fiber Fracture By Fragmentation Tests 248
3.2. Solid-Borne Sounds through GFRC by Source Location Tests 253
3.3. Air-Borne Sounds through GFRC in Impedance Tube 258
4. Conclusions 261
References 262