Experimental Mechanics

, Volume 23, Issue 1, pp 81–88 | Cite as

In-plane shear test of thin panels

  • Gary L. Farley
  • Donald J. Baker
Article

Abstract

Efficient application of thin-gage composite materials to helicopter fuselage structures necessitates that the materials be designed to operate at loads several times higher than initial buckling load. Methods are required to accurately measure and predict the response of thin-gage composites when subjected to these loads. This paper presents the results of an analytical and experimental study of the behavior of thin-gage composite panels subjected to in-plane shear loads. Finite-element stress analyses were used to aid in the design of an improved shear fixture that minimizes adverse corner stresses and tearing and crimping failure-modes characteristic of commonly used shear fixtures. Tests of thick buckle-resistant aluminum panels and thin aluminum and composite panels were conducted to verify the fixture design. Results of finite-element stress and buckling analyses and diagonal-tension-theory predictions are presented. Correlation of experimental data with analysis indicated that diagonal-tension theory can be used to predict the load-strain response of thin composite panels.

Keywords

Fluid Dynamics Shear Test Shear Load Composite Panel Efficient Application 

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References

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Copyright information

© Society for Experimental Mechanics, Inc. 1983

Authors and Affiliations

  • Gary L. Farley
    • 1
  • Donald J. Baker
    • 1
  1. 1.Structures LaboratoryU.S. Army Research & Technical Laboratories, Langley Research CenterHampton

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