ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Ultrasonic nondestructive characterization of impact damage and compression after impact for CFRP based on multi-mode imaging
Received date: 2021-11-08
Revised date: 2022-01-05
Accepted date: 2022-01-25
Online published: 2022-01-26
Supported by
National Natural Science Foundation of China(51601175);Aeronautical Science Foundation of China(20200009023004);Enterprise Top Innovative Young Talents Support Plan(2021-1-2);Open Project of State Key Laboratory for Strength and Vibration of Mechanical Structure(SV2021-KF-01)
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.
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 -426635 . DOI: 10.7527/S1000-6893.2022.26635
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