| 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 |
Interlaminar Fracture Toughness Evaluation of a Unidirectional Slit Tape Thermoplastic Composite |
| Author(s) |
Aswini Kona Ravi, Akhil Bhasin, Luis Gomez, Gerardo Olivares, Nobuya Kawamura, John Geriguis |
| On-Site Speaker (Planned) |
Aswini Kona Ravi |
| Abstract Scope |
Advanced materials such as thermoplastic composites are increasingly being used in aerospace structural applications. These materials are capable of novel manufacturing and joining processes and are expected to meet the high-production volume requirements of future-generation aircraft. Automated Fiber Placement (AFP) is one such novel technology that automates the fabrication process and consequentially reduces time and cost when compared to traditional manufacturing processes. In the present research, interlaminar fracture toughness of thermoplastic laminates fabricated using AFP was evaluated. The thermoplastic material chosen for this study was Toray T700/TC1225, a standard modulus unidirectional tape carbon fiber with a low-melt PAEK (PolyArylEtherKetone) resin system. The laminates were fabricated with a Kapton film at the midplane to artificially induce delamination. Mode I and mode II fracture toughness tests were conducted following the test standards ASTM D5528 and ASTM D7905, respectively. The data recorded from the tests consisted of load-displacement response and the delamination growth measured using optical microscopes. Resistance curves (R-curves) were computed to establish a relationship between delamination propagation and the interlaminar fracture toughness.
Numerical models of the mode I and mode II specimens were developed, and Cohesive Zone Modeling (CZM) was used to model the delamination growth. The models were simulated to predict the onset of delamination and the load-displacement response. The models will also be verified if the R-curve behavior observed in the experiments can be predicted numerically. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |