声明
摘要
Abstract
CONTENT
Figures
1.Introduction
1.1.Background of Non-destructive Testing
1.2.Advantages of optical NDT techniques
1.3.Research priorities of current work
2.State of the art
2.1.Review of optical NDT techniques
2.2.Theory of speckle phenomena
2.2.1. Speckle pattern
2.2.2. Subjective speckle size
2.2.3.Objective speckles
2.2.4.Near-field speckles and far-field speckles
2.3.Statistical Intensity
2.4.Dynamic speckle
2.5.Laser Speckle Photometry introduction
2.5.1.Variogram function
2.5.2.Fast Fourier Transform
2.6.Welding process and related parameters
2.7.Thermal Expansion
3.Objective and Scope
3.1.Objective
3.2.scope
4.Experimental Details
4.1.Sample description
4.2.Type of defect
4.3.Lab Experimental Setup
4.4.On-line experimental setup
4.4.1.Measurement directly on welding process
4.4.2.Measurement 90° from welding process
4.5.Algorithm of video evaluation
5.Results and discussion
6.Conclusion and outlook
6.1.Conclusion
6.2.Outlook
Acknowledgment
Reference
攻读硕士学位期间发表的论文及科研成果
西南交通大学;