| 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 |
Influence of Fiber Aspect Ratio on the Mechanical Performance of Highly Aligned Short Fiber Composites |
| Author(s) |
Uday Kiran Balaga, Chris Blackwell, Joseph M. Deitzel, Jun Xu, Dirk Heider, Suresh G Advani |
| On-Site Speaker (Planned) |
Uday Kiran Balaga |
| Abstract Scope |
In the field of advanced composites, recycling has gained significant interest in the recent times. During recycling, the reduction of composite parts into smaller segments introduces substantial variability in recycled short fiber lengths. This study looks at a series of model epoxy composites with continuous and aligned chopped E-glass fibers to investigate the effects of fiber aspect ratio (length/diameter) and aspect ratio distribution on final composite properties. The goal of the research is to gain insight into the mechanisms governing the composite failure, by focusing on these key factors. To create the model composite, we utilize the Tailored Universal Feedstock for Forming (TuFF) process, a short fiber preform processing technique known for its precision in achieving high alignment accuracy. Three aspect ratios (AR) of fibers—380, 510, and 636—were chosen for this work, where AR > 600 showed complete property translation for the TuFF process. Experimentation revealed a linear increase in mechanical properties with increasing AR, underscoring effective load transfer between fibers. However, the highest AR composites showed complete property translation when compared to continuous composites, but still fell short of analytical models such as the rule of mixtures, which overestimate properties by ignoring several factors governing the damage progression in the composite part. This experimental study provides insights into the complex interactions of fiber AR distribution on the mechanical performance of short fiber composites (SFC). |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |