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Residual strength of damaged sandwich structures.

Author(s) : WALLENBURG C. S., NIJHOF A. H. J., MARISSEN R.

Summary

Sandwich constructions consisting of a polymer foam core and fibre reinforced skins are effective with regard to thermal insulation, strength and stiffness. However, imperfect bonds between core and skin may be present due to imperfect production or impact loading. Imperfections may be acceptable, provided that the strength does not decrease below a critical value. The strength reduction due to imperfections of sandwich panels has been studied, based on a fracture mechanics approach. The problem was modelled with finite element method calculation. The predictions were compared with the results of experiments on sandwich panels with artificial defects. The agreement between theory and experiment appeared to be satisfactory.

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Pages: 619-626

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Details

  • Original title: Residual strength of damaged sandwich structures.
  • Record ID : 1996-1186
  • Languages: English
  • Source: For a Better Quality of Life. 19th International Congress of Refrigeration.
  • Publication date: 1995/08/20
  • Document available for consultation in the library of the IIR headquarters only.

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