| 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 |
Statistical Multiscale Progressive Failure Analysis of Unbalanced Plain Weave Composites |
| Author(s) |
Kumar C. Jois, Brett A. Bednarcyk, Marcus R. Welsh, Evan J. Pineda |
| On-Site Speaker (Planned) |
Brett A. Bednarcyk |
| Abstract Scope |
Unbalanced woven composites are those with different fiber counts in the different directions. This enables directional tailoring of the composite properties, and it can be accomplished by using different sized tows or different tow spacings in the warp and weft directions. In this work, four plain weave composites were manufactures, tested in tension, and modeled using the multiscale progressive failure capabilities in the NASA Multiscale Analysis Tool (NASMAT) software. In addition to a nominally balanced plain weave composite, three unbalanced configurations were considered consisting of 24k tows in one direction and either 12k tows, 3k tows, or a polyamide 12 scrim filament in the other direction. This latter configuration is quasi-unidirectional as it has carbon fibers in only one direction, but there remains tow undulation due to the scrim filaments. Braiding was used to manufacture dry carbon fiber preforms, while epoxy resin infusion and oven cure completed the composite manufacturing process. Statistical material properties were obtained for the fibers and matrix constituents while multiple measurements were taken of the microstructural parameters of each of the four composites to develop mean and standard deviations. These statistical data were then used to generate 1000 instances of NASMAT multiscale models of each of the four composites, which were analyzed following the Monte Carlo approach. The results were then compared with tensile test data for the composites, and the predicted Young’s modulus strength distributions were generated. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |