| About this Abstract |
| Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Presentation Title |
Time-Frequency Analysis for Interlaminar Defect Characterization in Composite Plates Through Ultrasonic Guided Waves |
| Author(s) |
Mingyue Zhang, Kalib Varela, Leandro Maio, Margherita Capriotti |
| On-Site Speaker (Planned) |
Mingyue Zhang |
| Abstract Scope |
The use of ultrasonic guided waves for inspections of large structures has been proven to be an effective non-destructive evaluation technique, thanks to the lower attenuation and high defect susceptibility within the entire cross-section with respect to conventional methods. The intrinsic nature of guided waves, however, hinders their adoption in aerospace and energy industry, due to complexity in their implementation and data interpretation. Detecting and characterizing common damage in composite structures with efficient inspections needs further efforts to understand the wave interaction with the discontinuity and to design sensitive and efficient techniques.
In this work, the effect of a delamination embedded in a carbon fiber reinforced panel is studied to provide insights for future guided waves-based inspections in aerospace structures.
First, a numerical analysis is performed to extract the guided wave behavior in the pristine composite panel. Then, a time-frequency analysis on an experimental dataset collected from broadband guided wave scanning of a composite panel is implemented. The broadband excitation enables the study of the interaction and damage effect on a wide range of frequencies, which can provide information on sensitive mode-frequency-features to select and scattering effects to aid damage characterization beyond detection.
Future directions on the numerical and data analysis and their integration will finally be provided, in an effort to improve damage characterization in composites via efficient guided waves-based methods. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |