封面
声明
英文摘要
中文摘要
目录
Nomenclature
1 Introduction
1.1 Background and literature review
1.2 Impedance-based NDE
1.3 Motivation for the current work
1.4 Thesis objectives
2 Low Acoustic Impedance \(LAI\) technique
2.1 Working Principle
2.2 Acoustic impedance
2.3 Reflection and transmission at normal incidence
2.4 Radial resonance mode
2.5 Principle of impedance technique
3 System design
3.1 PZT transducer
3.2 AD5933 evaluation board
4 Experiments and numerical modeling
4.1 Sensitivity study:frame’s diameter
4.2 Composite plate’s impact
4.3 Wooden samples
4.4 Debonding in PMMA samples
4.5 Effect of surface roughness
4.6 Thickness sensitivity test
4.7 Complementary experiments
5 Conclusion and future work
致谢
参考文献
Appendix A.
Appendix B.
Appendix C.
Appendix D.