Analytical studies on lamellar-structured composites made by freeze-casting

Abstract eng:
Previous studies on mechanical performance of natural multilayered materials such as nacre show that their outstanding properties are direct results of the nanoscale features and the optimized arrangement of the elements. One of the most effective methods to fabricate multilayered composites inspired by nacre, is ”freeze casting”. The lamellar-structured samples made by this method show interesting behavior. In this study first alumina/PDMS and Alumina/PU composites were made and tested and then analytical solutions for effective properties of lamellar-structured composites were developed. Analytical verification of all suggested deformation and toughening mechanisms is explored. The experimental results are in an excellent agreement with the analytical model. Detailed relationships are presented to identify future directions for material development.

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