| 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 |
Development of Auxetic Composite Materials for Improved Impact Properties |
| Author(s) |
Eloi Facon, François Rault, Eric Deletombe, François Boussu |
| On-Site Speaker (Planned) |
Eloi Facon |
| Abstract Scope |
Composite materials, known for their exceptional mechanical performance-to-weight ratio, are increasingly used in the aerospace and defense sectors. Additionally, innovative technologies like the open rotor (with possible increased fuselage impact situations) are being integrated to mitigate aircraft fuel consumption. This evolution introduces new design challenges, particularly concerning energy absorption during impacts.
Several studies indicate that auxetic materials may exhibit promising properties for impact resistance. Auxetic materials have a negative Poisson's ratio, which causes it to expand or contract laterally under longitudinal tensile or compressive stress, respectively. In compression, this results in material densification, enhancing mechanical properties such as indentation resistance, shear modulus, and energy absorption capability. Consequently, these materials emerge as viable options for enduring impact loads. Most auxetic structures are typically studied experimentally using foams or additively manufactured materials. The latter option offers advantages such as precise geometry but has drawbacks due to its layer-by-layer construction process.
Technical textiles are renowned for their ability to absorb energy during impact events due to their high resilience and deformability. By manufacturing auxetic structures from technical textile-reinforced composites, both energy absorption capabilities may be synergized.
The aim of this study is to conduct experimental and modelling research of fiber-reinforced auxetic composites to ensure both efficient stiffness for static loading and energy absorption capacity during dynamic loading such as impact. This involves several tasks, including designing and manufacturing of composite material specimens, setting up characterization tests, and developing a numerical model to gain a comprehensive understanding of the mechanical behavior of these materials. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |