Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Analysis of adhesive bonded composite lap joints with transverse stitching


The effect of transverse stitching on the stresses in the adhesive is investigated using an adhesive sandwich model with nonlinear adhesive properties and a transverse stitching model for adhesive bonded composite single-lap and double-lap joints. Numerical results indicate that, among all stitching parameters, thread pretension and stitch density have significant effect on the peel stresses in the adhesive; increase in the thread pretension and the stitch density leads to a decrease in peel stress in the adhesive, while an increase in other parameters generally results in a negligible reduction in peel stress. The effect of stitching was found to be negligible on the shear stresses in the adhesive. Thus it is concluded that stitching is effective for the joints where peel stresses are critical and ineffective for those where shear stresses are critical.

This is a preview of subscription content, log in to check access.


  1. 1.

    Adams, R. D., ‘Strength Predictions for Lap Joints, Especially with Composite Adherends. A Review’,J. Adhesion 30, 1989, 219–242.

  2. 2.

    Kairouz, K. C. and Matthews, F. L., ‘Strength and Failure Modes of Bonded Single Lap Joints between Cross-Ply Adherends’,Composites 24, 1993, 475–484.

  3. 3.

    Jain, L. K. and Mai, Y.-W., ‘On the Effect of Stitching on Mode I Delamination Toughness of Laminated Composites’,Compos Sci. and Tech. 51, 1994, 331–345.

  4. 4.

    Jain, L. K. and Mai, Y.-W., ‘Analysis of Stitched Laminated ENF Specimens for Interlaminar Mode II Fracture Toughness’,Int. J. Fracture 58, 1994, 219–244.

  5. 5.

    Sharma, S. K. and Sankar, B. V., ‘Effect of Stitching on Impact and Interlaminar Properties of Graphite/Epoxy Laminates’, inProceedings of the American Society for Composites 9th Technical Conference, Newark, Delaware, September 20–22, 1994, pp. 700–708.

  6. 6.

    Tada, Y. and Ishikawa, T., ‘Experimental Evaluation of the Effects of Stitching on CFRP Laminates with Various Shapes and Loadings’,Key Engineering Materials 37, 1989, 305–316.

  7. 7.

    Bigwood, D. A. and Crocombe, A. D., ‘Elastic Analysis and Engineering Design Formulae for Bonded Joints’,Int. J. Adhesion and Adhesives 9, 1989, 229–242.

  8. 8.

    Tong, L., Kuruppu, M. and Kelly, D., ‘Analysis of Adhesively Bonded Composite Double Lap Joints’,Journal of Thermoplastic Composite Materials, 1995, accepted for publication.

  9. 9.

    Press, W. H., Teukolsky, S. A., Vetterling, W. T. and Flannery, B. P., inNumerical Recipes in Fortran: The Art of Scientific Computing, 2nd edn, Cambridge University Press, 1992, pp. 751–778.

  10. 10.

    Tsai, M. Y. and Morton, J., ‘An Evaluation of Analytical and Numerical Solutions to the Single-Lap Joint’,Int. J. Solids Structures 31(18), 1994, 2537–2563.

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Tong, L., Jain, L.K. Analysis of adhesive bonded composite lap joints with transverse stitching. Appl Compos Mater 2, 343–365 (1996).

Download citation

Key words

  • transverse stitching
  • adhesive bonding
  • composite
  • lap joints
  • stresses