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The improvement of end-boundary conditions for off-axis tension specimen use

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Abstract

Inaccuracies in using the off-axis tension test are caused by the nonuniform stresses produced by the end constraints. The purpose of this study is to show that these nonuniformities can be virtually eliminated by adjusting the amount of tab clamping and selectively locating the point about which the clamp may rotate.

Determination of the ideal amount of clamping and point of rotation was carried out using a linear-finite-element method. Experimentation was also carried out to qualitatively verify the finite-element solutions. The results indicate that a nearly uniform state of stress can be produced with ideal tab clamping and rotation.

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References

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Authors and Affiliations

  1. Aeronautics and Astronautics Department, Air Force Institute of Technology, 45433, Wright-Patterson Air Force Base, OH

    S. M. Cron (Graduate Student) & A. N. Palazotto (Professor)

  2. AFWAL, 45433, Wright-Patterson Air Force Base, OH

    R. S. Sandhu (SEM Member) is Research Engineer)

Authors
  1. S. M. Cron
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  2. A. N. Palazotto
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  3. R. S. Sandhu
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Cron, S.M., Palazotto, A.N. & Sandhu, R.S. The improvement of end-boundary conditions for off-axis tension specimen use. Experimental Mechanics 28, 14–19 (1988). https://doi.org/10.1007/BF02328989

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  • DOI: https://doi.org/10.1007/BF02328989

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