Page 9 - 裂尖闭合现象的全场域模型

4.3.4.4 Calibration / 95
4.3.4.5 Surface preparation / 97
4.3.4.6 Experimental procedure / 98

Chapter 5
Photoelasticity Experimental Analysis and Results / 107

5.1 Introduction / 107
5.2 Crack Growth Data / 107
5.3 Operational Features of the Image Process Programs / 113
5.4 Method / 120
5.5 Definition of the Region of Validity of the Model / 121
5.5.1 Introduction / 121
5.5.2 Preliminary Study / 121
5.5.3 Data Collection Zone / 126
5.5.3.1 Outer limit defined by a fringe-loop / 123
5.5.3.2 Rectangular-shaped outer limit / 128
5.6 Crack Tip Location / 142
5.7 Verification of the New Model / 143
5.8 Experimental Results / 145
5.8.1 Results for the CT Specimens Tested under R=0.1 / 146
5.8.1.1 Annealed polycarbonate CT specimens / 137
5.8.1.2 Unannealed polycarbonate CT specimens / 142
5.8.2 Results for the CT Specimens Tested under R=0.3 / 154
5.8.3 Results for the CT Specimens Tested under R=0.5 / 156
5.8.4 Results for T-stress / 160
5.9 Conclusions / 167

Chapter 6
DIC Experiments and Results / 169

6.1 Introduction / 169
6.2 Experimental DIC Data Evaluation and Displacement Field Display / 169
6.2.1 Evaluation Settings / 170
6.2.1.1 Camera calibration settings / 160
6.2.1.2 Evaluation series generation / 160