基于多模式超声成像的CFRP冲击损伤无损表征与冲击后压缩强度预测

doi:10.7527/S1000-6893.2022.26635

Abstract

Abstract:

In order to realize the quantitative nondestructive characterization for the impact damage and residual strength of composite laminate， a phased array ultrasonic multi-mode imaging method for damage imaging and compressive strength prediction of CFRP laminate is proposed. The location， dimension and distribution of the delamination damages under different impact energy are obtained using phased array ultrasonic. Furthermore， the compression after impact （CAI） of AC631/CCF800H composite laminates is predicted by using equivalent through-hole volume based on tomographic C-scan. The results show that the combine of B-scan， depth C-scan and tomographic C-scan can effectively describe the morphology， dimension and spatial distribution characteristics of the delamination damages. Compared with traditional fitting methods， the equivalent through-hole volume based on tomographic C-scan images has a greater correlation with the compressive strength， and the CAI prediction results are more accurate. Relevant research can provide a reference for the analysis of impact damage process and quantitative nondestructive characterization of mechanical properties of composites.

Key words: CFRP, impact damage, compression after impact, multi-mode ultrasound imaging, nondestructive characterization

CLC Number:

V216

Wei ZHANG, Binwen WANG, Junling FAN, Shaozheng ZHAN, Ting JIAO, Yu YANG. Ultrasonic nondestructive characterization of impact damage and compression after impact for CFRP based on multi-mode imaging[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(1): 426635.

Figures/Tables 10

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冲击能量/J	声程C扫描最大分层面积S_max/mm²
35	848	840	846	776	858	821	850	812	892	802	847	913	800	912	1 017
60	1 147	1 047	1 150	1 021	1 129	1 023	1 105	1 086	1 009	1 114	1 147	1 047	1 150	1 021	1 129

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Ultrasonic nondestructive characterization of impact damage and compression after impact for CFRP based on multi-mode imaging

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