Characterization of interfacial strength of syntactic foam by unit cell finite element model
March 26-31, 2017
The interfacial strength between glass hollow microspheres and epoxy in epoxy-based syntactic foam was investigated using finite element method. The stiffness of the foam in tension and compression was studied by unit cell type finite element model containing a microsphere and an epoxy matrix. The changes in the stiffness of the foams having different interfacial strength were analyzed by introducing interfacial elements between the microsphere and the matrix in the model. The tension and compression moduli of the foam was studied by the model, in terms of the stiffness of the interfacial elements. Finally, the moduli of the foam having different volume fractions of the microspheres were evaluated by experiments and compared to the results of the model to characterize the interfacial strength between the microsphere and the matrix.
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W.J. Lee, Y.J Kang, and Y.C. Lee, "Characterization of interfacial strength of syntactic foam by unit cell finite element model" in "Syntactic and Composite Foams V", Gary M. Gladysz (Empyreus Solutions, LLC, USA) Krishan K. Chawla (University of Alabama at Birmingham, USA) Aldo R. Boccaccini (University of Erlangen-Nuremberg, Germany) Manabu Fukushima (National Institute of Advanced Industrial Science and Technology (AIST), Japan) Eds, ECI Symposium Series, (2017). http://dc.engconfintl.org/syntactic_composite_foams_v/19