| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging
|
| Presentation Title |
Non-destructive Evaluation of Defects and Inclusions in Composite Structures Using Terahertz Time Domain Analysis |
| Author(s) |
Sushrut Karmarkar, Mahavir Singh, Vikas Tomar |
| On-Site Speaker (Planned) |
Mahavir Singh |
| Abstract Scope |
Current and future detectors for high-energy particle physics like those at Large Hadron Collider (CERN) and EIC at Brookhaven National Lab pose high demands for the structural materials in a high-radiation environment where the accumulated radiation dose leads to defects like voids and cracks due to de-gassing and thermal cycling in the polymeric composite materials. A sub-surface NDT techniques Terahertz Time Domain Spectroscopy which can accurately quantify changes in optical properties, including refractive index, absorption coefficient, and phase shift, allowing for the determination of the elastic constants and in-situ imaging is being developed for this application. THz-TDS is used to map these strains in a bi-material strip and trace the locations of fractures, defects, and inclusions in a thermal interface material layer or adhesive layer. Statistical data driven terahertz scan-image analysis is used for predicting the fracture propagation behavior to validate the cohesive FEA model for the fracture observed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Composites, Other |