碳纤维复合材料构件缺陷脉冲涡流成像与图像分析的基础理论和关键技术研究
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1.Eddy current imaging for detecting defects in conductive structures based on compressive sensing method
- 关键词:
- Eddy current testing;Mapping;Matrix algebra;Image reconstruction;Damage detection;Compressed sensing;Defects;Eddy current imaging;Information recovery;Mapping relationships;Quantitative evaluation;Sparse representation;Study and applications;Technological applications;Theoretical framework
- Ye, Bo;Deng, Weiquan;Bao, Jun;Wu, Jiande;Wang, Xiaodong;Huang, Guoyong
- 《11th International Workshop on Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance, IWSHM 2017》
- 2017年
- September 12, 2017 - September 14, 2017
- Stanford, CA, United states
- 会议
Accurate detection and quantitative evaluation of defects and damages in conductive structures is an essential and crucial task in a range of technological applications, such as maintaining the integrity, enhancing the safety, and assuring the reliability of structures. There is scope for improving the current methods by incorporating compressive sensing in the inspection process. In conductive structures eddy current imaging, scientific key problems are sparse representations and transform domain mapping, sparse testing constraints, and sparse image reconstruction. The main research contents are as follows: firstly, constructing the model of conductive structures eddy current imaging and researching on sparse representations, transform domain mapping, sparse matrix, sparse transform matrix, and signal recovery priori errors, for providing basic theory; secondly, using a coil probe to do C scan, and researching on the mapping relationship between the specimen and sparse data acquisition, and the methods of data acquisition, for establishing the theoretical framework of data acquisition; thirdly, proposing the information recovery methods for completing the compressive sensing; fourthly, establishing the experimental system for validating theories and methods. Finally, currently urgent need theories and methods of conductive structures eddy current imaging are established. It will promote the theories and technologies development of eddy current testing. The study and application of conductive structures are also accelerated.
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