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Fracture resistance of Ceramic-Polymer hybrid materials using microscopic finite element analysis and experimental validation

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  • Brendan Sodergren
  • Jing Wang
  • Yu Zhang
  • Jeongho Kim

Abstract

The objective of this paper is to elucidate the response to contact stresses of Polymer Infiltrated Ceramic Network (PICN) using the microscopic viscoplastic finite elements, validated by clinically relevant in vitro tests. A feldspathic ceramic material, namely Vita Mark II, is an interconnected structure infiltrated with the polymer (PMMA). Axisymmetric finite element microstructure models are reconstructed from two-dimensional images of a PICN microstructure. Viscoplastic finite element analysis (FEA) with various degrees of microscopic damages occurring over contact is performed. The force-displacement responses obtained from FEA are validated with Hertzian contact tests. Finite element results for force-displacement, stresses and strains in each phase are discussed. We hypothesize that the resistance to fracture of PICN can be further improved by microstructural tailoring. The experimental evidence suggests that a composite material is both more resistant to displacement under load and more resistant to crack initiation and propagation, as hypothesized. Further parametric study on the effects of various volume fractions of two phases in PICN is done to provide some insight on increased contact damage resistance of PICN as well as potential optimization of microstructures.

Suggested Citation

  • Brendan Sodergren & Jing Wang & Yu Zhang & Jeongho Kim, 2022. "Fracture resistance of Ceramic-Polymer hybrid materials using microscopic finite element analysis and experimental validation," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 25(16), pages 1785-1795, December.
    • Handle: RePEc:taf:gcmbxx:v:25:y:2022:i:16:p:1785-1795
    DOI: 10.1080/10255842.2022.2038141
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