Syntactic foam core metal matrix sandwich composite under bending conditions

Mohammed Yaseer Omar, Chongchen Xiang, Nikhil Gupta, Oliver M. Strbik, Kyu Cho

Research output: Contribution to journalArticle

Abstract

The present work aims at characterizing a metal matrix syntactic foam core sandwich composite under three-point bending conditions. The sandwich comprises alumina hollow particle reinforced A356 alloy syntactic foam with carbon fabric skins. Crack initiation in the tensile side of the specimen causing failure of the skin, followed by rapid failure of the core in the direction applied load, is observed as the failure mechanism. Crack propagation through the alumina particles is observed in the failed specimens instead of interfacial failure. The average maximum strength, flexural strain and stiffness were measured as 91.2 ± 5.6. MPa, 0.49 ± 0.06% and 20.6 ± 0.7. GPa respectively. The collapse load is theoretically predicted using mechanics of sandwich beams. Experimental values show good agreement with theoretical predictions.

Original languageEnglish (US)
Pages (from-to)536-544
Number of pages9
JournalMaterials and Design
Volume86
DOIs
StatePublished - Dec 5 2015

Keywords

  • Flexural properties
  • Metal matrix composite
  • Sandwich composite
  • Syntactic foam

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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