Article

Journal of Materials Engineering and Performance

, Volume 17, Issue 4, pp 460-464

First online:

Evaluation of Advanced Adhesives for Aerospace Structures

  • P. StoyanovAffiliated withMechanical Engineering Department, Loyola Marymount University
  • , N. RodriguezAffiliated withMechanical Engineering Department, Loyola Marymount University
  • , T. DickinsonAffiliated withMechanical Engineering Department, Loyola Marymount University
  • , D. Huy NguyenAffiliated withMechanical Engineering Department, Loyola Marymount University
  • , E. ParkAffiliated withMechanical Engineering Department, Loyola Marymount University
  • , J. FoyosAffiliated withMechanical Engineering Department, Loyola Marymount University
  • , V. HernandezAffiliated withNorthrop Grumman Space Technology
  • , J. OgrenAffiliated withMechanical Engineering Department, Loyola Marymount University
  • , M. BergAffiliated withMathematics Department, Loyola Marymount University

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Abstract

Polymer adhesives are finding increased use in panel joining applications in aircraft and aerospace structures where the applied stresses permit their use and where a uniform stress distribution is needed. One such adhesive, Hysol EA-9394™, was compared to three other formulations in this study. The new formulations were Hysol EA-9396, Hysol EA-9396 filled with nickel nanofibers and mixed by machine (Jamesbury Blender), and Hysol EA-9396 filled with nickel nanofibers and hand mixed in the laboratory. The comparison consisted of measuring shear lap strengths of aluminum test pieces bonded together with the candidate adhesives. The mechanical tests were supplemented by a Weibull analysis of the strength data and by a visual inspection of the failure mode (adhesive/cohesive). The lap shear strengths (fracture stress values) of all three Hysol EA-9396 adhesives were greater than that of the baseline Hysol EA-9394 polymer.

Keywords

adhesive-bonding failure statistics joining shear fracture Weibull analysis