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 |
Characterization of Volumetric Damage in a Woven PMC with an Embedded Lightning Strike Protection Layer |
Author(s) |
John Wertz, Laura Homa, Matt Cherry, LoriAnne Groo, Tyler Tallman |
On-Site Speaker (Planned) |
John Wertz |
Abstract Scope |
Electrical impedance tomography (EIT) is an electromagnetic nondestructive evaluation method used to characterize domain conductivity from voltage measurements on the boundary. This method can map damage to structural materials that demonstrate stimulant-responsive conductivity, such as unidirectional ply or woven polymer-matrix composites (PMCs). In this work, we demonstrate EIT of volumetric damage in a woven PMC with an embedded copper mesh for lightning strike protection. A woven composite specimen was created with silver-epoxied electrodes distributed on the rear face. Baseline EIT measurements will be generated, followed by a drilling of a blind hole in the front face. Measurements with damage will be made, and the blind hole will be extended further into the front face. This pattern of damage and measurement will be conducted until a thru-hole is created. This data will be used to solve the EIT inverse problem via difference imaging, using both a mixed prior and an L1 norm. The reconstruction from EIT will be compared to C-scans from ultrasonic testing. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |