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 (TM), 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.
Copyright 2008 ASM International. This paper was published in Journal of Materials Engineering and Performance, Volume 17, Issue 4, pp. 460-464 and is made available as an electronic reprint with the permission of ASM International. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplications of any material in this paper for a fee or for commercial pruposes, or modification of the content of this paper are prohibited. Available on publisher's site at http://www.springerlink.com/content/kx32014531g5u8t1/.
Stoyanov, P., Rodriguez, N., Dickinson, T., Nguyen, D.H., Park, E., Foyos, J., Hernandez, V., Ogren, J., Berg, M., and Es-Said, O. S., 2008, "Evaluation of Advanced Adhesives for Aerospace Structures," Journal of Materials Engineering and Performance, 17(4), pp. 460-464.