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Determination of residual stresses in aluminum-alloy sheet material

In method described by the authors, thin layers are removed by chemical etching, which induces an increasing curvature of the sheet. The initial distribution of the residual stress is derived from curvature measurements

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Abstract

A method has been developed for the determination of residual stresses in thin sheet material. Thin layers are removed by chemical etching, which induces an increasing curvature of the sheet. The initial distribution of the residual stress is derived from curvature measurements. Details of the etching procedures and the equations required for the calculations are presented. Results are given for as-rolled sheet material and for spot-peened material.

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References

  1. Graaf, F. A. B. de, Jacobs, F. A. and Nasette, J. H., “Influence of residual compressive stresses upon the fatigue strength of notched and unnoteched 7079 specimens,” National Aerospace Lab. N.L.R. Report TR 71105 C, Amsterdam (1972).

  2. Hospers, F. andVogelesang, L. B., “Determination of the residual stresses in rolled sheet, by chemical etching of thin layers,” (Dutch)Delft Univ. of Tech., Dept. of Aero. Engineering, VTH Report 155, Delft (1969).

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  3. Vogelesang, L. B. andSnijder, J., “Determination of the residual stress distribution in a metal strip after shot peening,” (Dutch),Delft Univ. of Tech., Dept. of Aero. Engineering, VTH Mem. M-169, Delft (1970).

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  4. Tebedge, N., Alpsten, G. andTall, L., “Residual-stress Measurement by the Sectioning Method,”Experimental Mechanics,13 (2),88–96 (1973).

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  5. “Shot Peening,” Metals Handbook,2,Heat Treatment, Cleaning and Finishing, 8th Edit., 398–406, ASM, Metals Park, Ohio (Nov. 1964).

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Authors and Affiliations

  1. Department of Aeronautical Engineering, Delft University of Technology, Kluyverweg 1, Delft, The Netherlands

    F. Hospers & L. B. Vogelesang

Authors
  1. F. Hospers
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  2. L. B. Vogelesang
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Hospers, F., Vogelesang, L.B. Determination of residual stresses in aluminum-alloy sheet material. Experimental Mechanics 15, 107–110 (1975). https://doi.org/10.1007/BF02320640

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  • DOI: https://doi.org/10.1007/BF02320640

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