Speaker
Description
Interpenetrating phase composites (IPC) are a class of materials with two continuous phases. The combination of a soft and stiff skeletal phase results in a combination of both properties, known e.g. from fiber-reinforced composites. We investigate composites made of 3D fiber networks in a hyperelastic silicone matrix for IPC, which exhibit strong, nonlinear mechanical behavior and energy dissipation for applications in artificial cartilage.
The aim of this work is the process of modeling the mechanical properties of interpenetrating composites for numerical analysis. The process is based on the inclusion of CT imaging data and experiments for each phase of the composite. Numerical analysis and comparison of the obtained results with the experiemnt will allow to determine the values of strains and stresses inside the composite structure. This is of significant importance in describing the obtained structural and mechanical properties of isotropic fiber networks and the resulting IPCs. The obtained properties have a unique mechanical interaction between the fiber networks and the matrix, which allows to adjust the anisotropy of the mechanical response. Insights from in situ nanoCT analysis and mechanical modeling are used to identify the skeletal mechanism.
[1] L. Siebert, T. Jeschek, B. Zeller-Plumhoff, Robert Roszak, R. Adelung, M. Ziegenhorn "Mechanical Interactions in Interpenetrating Composites" 5th International Conference on Nanotechnologies and Biomedical Engineering : Proceedings of ICNBME-2021, November 3-5, 2021, Chisinau, Moldova, Springer, 2022 - s. 579-586
