|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Metal and Polymer Matrix Composites II
||Hollow Fly Ash Composite Foams – Thermal and Mechanical Properties
||Dinesh Pinisetty, Vasanth Shunmugasamy
|On-Site Speaker (Planned)
Hollow particle reinforced composites called syntactic foams are finding applications in marine and aerospace structures owing to their light weight and specific mechanical properties. Preparing low-cost composite foams can greatly benefit these sectors. Hollow fly ash particles called cenospheres, is one such low cost filler obtained as a by-product from coal burning thermal power plants. They are composed of oxides of aluminum, silicon and iron which make it an attractive filler material. However the particles possess irregular wall thickness, which makes it difficult to correlate the composite properties with their respective microstructure. In the current study cenosphere syntactic foams filled with 30 and 60 vol.% fillers are evaluated for coefficient of thermal expansion (CTE) and mechanical properties that are correlated with microstructure. The composite foam was observed to possess 67% lower CTE in comparison to the neat resin. Using theoretical models the CTE of composite is attributed to the microstructure.
||Planned: A print-only volume