关键词: 玻璃纤维复合材料, 超声检测, CIVA仿真, 试验

Abstract: For ultrasonic testing of the sound field distribution in the glass fiber reinforced laminate, the change law of the sound field in the material with different thickness wedges was obtained by using CIVA software. At the same time, conducting the simulation test of prefabricated defects with different specifications in the test block, through the analysis of B-scan and A-scan echo waveforms of defects, the echo characteristics and wave height rules of defects with different depths are obtained. Finally, the ultrasonic testing instrument is used to carry out the actual inspection and verification test on the glass fiber laminate made. The test results show that the waveform characteristics and detection results of layered defects with different sizes and buried depths are the same as the simulation test results. When the defect is too close to the surface, the detected size is much larger than the actual defect; when the defect is in the middle of the laminate, the detection results are close to the actual size; when the defect is at the bottom of the laminate, the detection result is smaller than the actual size.

Key words: GFRP, ultrasonic testing, CIVA simulation, test