Research on Line-scan Inspection Method with Guided Waves
نویسندگان
چکیده
Ultrasonic guided wave can propagate over a long distance and can be used to inspect plate and shell structure. Line-scan method is always applied to guide wave inspection. However, it is a problem how to locate the defects and how to image the inspection results if the through transmission method is used. In order to solve this problem, the imaging method of inspection results with ultrasonic guided waves is studied. The line-scan inspections respectively with pulse echo method and through transmission method are introduced. The X-Y dimension cross product and adding method is finally emphasized on. Defect’s location and size are solved and the inspection result is imaged when aluminum skin honeycomb core sandwich structure specimen is inspected. The experiment results show that the X-Y dimension cross product and adding method can solve efficiently the problem of defect location and size when through transmission method is used in guided waves line-scan inspection.
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