Nondestructive testing and evaluation of carbon fiber reinforced polymer laminates with inclusions

doi:10.19936/j.cnki.2096-8000.20230228.012

Abstract

Abstract: In the field of nondestructive testing and evaluation(NDT&E)of carbon fiber reinforced polymer(CFRP), phased array ultrasonic testing technique(PAUT)was usually used to detect the size and location of defects. Furthermore, wavelet packet transform and BP neural network were used to identify the type of defects. In this paper, three different types of CFRP laminates which contain defects such as teflon, CFRP sheet and plastic paper were made. Then, PAUT was used to detect these CFRP laminates with inclusions. The size and location of defects were evaluated from B and C scanning images, and the type of defects were evaluated from the A scan signals. The recognition rate could reach 90.9% in three types of defects. However, if only CFRP sheet and plastic paper were recognized, and the recognition rate could reach 100%.

Key words: inclusion, carbon fiber reinforced polymer, phased array ultrasonic testing technique

CLC Number:

TB332

HU Yefa, MENG You, ZHANG Jinguang, DENG Wei, XU Shengfeng. Nondestructive testing and evaluation of carbon fiber reinforced polymer laminates with inclusions[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(2): 94-100.

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