Ultrasonic Guided Waves for Lap Splice Joint Inspection in Aging Aircraft

  • Joseph L. Rose
  • Aleksander Pilarski
  • Krishna M. Rajana


The integrity and reliability of adhesive joints in structural applications has long been a critical issue. Failure of these bonds during service could be catastrophic. In particular, the aviation industry due to its progressively aging fleet calls for a reliable non-destructive testing technique to characterize the bond quality. Several NDE techniques were developed each with its own advantages and disadvantages. [1–2] Utilization of ultrasonic guided waves offer a reliable and time efficient method. [3] Following several laboratory studies this technique was tested on a service damaged aircraft at Sandia National Laboratories in Albuquerque, NM. A Double Spring Hopping Probe (DSHP) was developed and tested on this test bed. A protocol for the inspection of lap splices and tear strap was established. The concepts of utilization of wave structure in mode selection, angle and frequency tuning for optimal use of the Lamb type guided waves are addressed. Highlights of our recent work on aging aircraft inspection are presented in this paper. The work expands on our earlier presentations. [4]


Dispersion Curve Wave Structure Frequency Tuning Adhesive Joint Sandia National Laboratory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    R.B. Thompson and D.O. Thompson., J. Adhesion Sci. Technol., 5, p. 583 (1991).CrossRefGoogle Scholar
  2. 2.
    S.I. Rokhlin and D. Marom, A. Acoust. Soc. Am. 80, p. 585 (1986).CrossRefGoogle Scholar
  3. 3.
    A. Pilarski and L.L. Rose, J. Appl. Phys. 63, p. 300 (1987).CrossRefGoogle Scholar
  4. 4.
    J.L. Rose, K.M. Rajana, and M.K. T Hansch, J. Adhesion Sci. Technol. (to be published).Google Scholar
  5. 5.
    J.L. Rose, J.J. Ditri and A. Pilarski, J. Italian Soc. of NDT. (in press).Google Scholar
  6. 6.
    J.J. Ditri and J.L. Rose, ASME J. Appl. Mech., Vol. 61, No. 2, 330, (1994).CrossRefMATHGoogle Scholar
  7. 7.
    K.M. Rajana, J.J. Ditri, D. Hongerholt and J.L. Rose., these proceedings.Google Scholar

Copyright information

© Plenum Press, New York 1995

Authors and Affiliations

  • Joseph L. Rose
    • 1
  • Aleksander Pilarski
    • 1
  • Krishna M. Rajana
    • 1
  1. 1.Department of Engineering Science and MechanicsThe Pennsylvania State UniversityUniversity ParkUSA

Personalised recommendations