12 April 2016 Focusing surface wave imaging with flexible 2D array
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Curved surface is widely exist in key parts of energy and power equipment, such as, turbine blade cylinder block and so on. Cycling loading and harsh working condition of enable fatigue cracks appear on the surface. The crack should be found in time to avoid catastrophic damage to the equipment. A flexible 2D array transducer was developed. 2D Phased Array focusing method (2DPA), Mode-Spatial Double Phased focusing method (MSDPF) and the imaging method using the flexible 2D array probe are studied. Experiments using these focusing and imaging method are carried out. Surface crack image is obtained with both 2DPA and MSDPF focusing method. It have been proved that MSDPF can be more adaptable for curved surface and more calculate efficient than 2DPA.
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Shiyuan Zhou, Shiyuan Zhou, Junqiang Fu, Junqiang Fu, Zhe Li, Zhe Li, Chunguang Xu, Chunguang Xu, Dingguo Xiao, Dingguo Xiao, Shaohan Wang, Shaohan Wang, } "Focusing surface wave imaging with flexible 2D array", Proc. SPIE 9804, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2016, 98042H (12 April 2016); doi: 10.1117/12.2239960; https://doi.org/10.1117/12.2239960

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