Optimization Techniques for Multi-component Materials

Abstract

Objective: This paper investigates a range of optimization approaches for advanced composite structural items made of polymers with inclusion of specially formulated glass fibers (GFs) (either continuous linear strands or mesh matrix). Methods: Ridged polymer test panels were tested for flexural strength using variable loads (ASTM D790 standard). Tested variables included: (a) thickness and amount of GF dispersed within polymer matrix, (b) addition and placement of open mesh woven element on open flat surfaces of polymer panel, and (c) addition and selective placement of tension setters on ridges. Results: Optimal amounts of additives, design and compositions were determined for strength and impact resistance of polymer composites. Tension setters were found to be best embedded in laterally extending rib elements of composite structure, preferably as end-portions of rib elements. Open mesh woven element should be placed strategically within polymeric body to provide impact strength where needed the most. Conclusion: These optimized composite structural designs showed higher strength (up to 331% of the base polymer), higher impact resistance (up to 551% of the base), with additional benefit of reduced weight by 15-21%, as compared to conventional polymer panels.