Ultrasonic Assessment of Cure Rate Effects in Bonded Honeycomb Structures

  • R. A. Pike
  • R. S. Williams

Abstract

The effect of variations in cure temperature on fillet formation in adhesively bonded honeycomb structures has been defined in terms of fillet length, degree of cure and Tg of the cured neat adhesive. The results are correlated with predicted behavior based on ultrasonic NDE analysis prior to testing. The ultrasonic test method uses advanced pattern recognition analysis of attenuation and velocity data extracted from a multi-frequency Lamb wave propagated along the face sheet of the honeycomb. Laboratory applications of this test method are described.

Keywords

Porosity Acetone Attenuation Hexagonal Dicyandiamide 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R.S. Williams and P.E. Zwicke, Materials Evaluation 40, 312 (1982).Google Scholar
  2. 2.
    C.L. Mahoney, paper (No.790151) presented at the Soc. of Automotive Engineers, Congress & Exposition, Detroit, February 26, 1979.Google Scholar
  3. 3.
    J. Thuen and R. Hinrichs, in “Proc. 25th National SAMPE Symposium & Exposition”, held May 6, 1980, p. 126.Google Scholar
  4. 4.
    E. Sancaktar, H. Jozavi and R.M. Klein, paper presented at the 5th Annual Adhesion Society Meeting, Mobile, AL, February 22, 1982.Google Scholar
  5. 5.
    R.A. Pike, F.P. Lamm and J.P. Pinto, to be published.Google Scholar
  6. 6.
    R.A. Pike, F.P. Lamm and J.P. Pinto, J. Adhesion 12, 143 (1981).Google Scholar
  7. 7.
    R.A. Pike, F.P. Lamm and J.P. Pinto, J. Adhesion 13, 229 (1982).Google Scholar
  8. 8.
    A.G. Ivakhnenko, IEEE Trans. on Systems, Man and Cybernetics, SMC-1,No. 4, October 1971, p. 364.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1984

Authors and Affiliations

  • R. A. Pike
    • 1
  • R. S. Williams
    • 1
  1. 1.United Technologies Research CenterSilver Lane East HartfordUSA

Personalised recommendations