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 |
Progressive Damage Modeling of Stitched Double Cantilevered Beam Specimens Using Cohesive Zones |
Author(s) |
Aditya Shah, Rani W. Sullivan |
On-Site Speaker (Planned) |
Aditya Shah |
Abstract Scope |
Polymer matrix composite materials have many advantages over traditional materials due to their high strength, stiffness, and tailorable properties. However, composite materials are prone to delamination due to their low interlaminar properties, which can cause stiffness degradation and compromise structural integrity. Stitching through the thickness has been used to increase the fracture resistance of composite materials. In order to meet the certification requirements and reduce costs associated with experimental testing, progressive damage and failure analysis of stitched composites are essential. In this study, a cohesive zone model, based on a bilinear traction separation law, is used to simulate the progressive damage of stitched double cantilevered beam (DCB) specimens. Validation data was obtained from DCB tests to obtain Mode I strain energy release rate of the composites that are reinforced with one-sided modified chain stitching. Embedded optical fibers were included to characterize the internal lengthwise strain of the DCB specimens during crack initiation and propagation. A comparison of the measured deformation and crack growth with corresponding predicted values will be discussed. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |