Design and mechanical testing of hybrid aluminum/graphite/epoxy rods

Justin B. Berman, Scott R. White

Research output: Contribution to journalConference articlepeer-review


This paper describes an experimental study for the design of hybrid aluminum/graphite/epoxy rods. The integration of polymer matrix composite material with metal specimens serves the commercial and defense industries with an alternative to pure metal components by producing specimens of increased stiffness and reduced weight. Experimental results are presented on the design and mechanical testing of hybrid rods combining 7075-T6 aluminum and AS4/3501-6 graphite/epoxy. Various chemical and mechanical surface treatments at the aluminum/epoxy interface are examined through mechanical testing. A transitional thickness design using phosphoric acid anodization and a high shear strength adhesive is shown to exhibit increased stiffness and reduced weight in comparison to pure 7075-T6 aluminum. A moderate sacrifice in ultimate strength is to be expected from such a design.

Original languageEnglish (US)
Pages (from-to)1129-1137
Number of pages9
JournalInternational SAMPE Symposium and Exhibition (Proceedings)
Issue number2
StatePublished - 1993
EventProceedings of the 1993 38th International SAMPE Symposium and Exhibition. Part 2 (of 2) - Anaheim, CA, USA
Duration: May 10 1993May 13 1993

ASJC Scopus subject areas

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


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