Advertisement

Abstract

Solid state welds that bond a piece of metal to a piece of the same metal are increasingly important in industrial applications. Consequently new inspection methods that use ultrasound are being developed based on two characteristics of the weld. One inspection method uses the bond-line’s specular reflectivity to indicate microcracking or porosity [1–4]. A second method measures the attenuation (or velocity shift) to infer changes in the near-bond microstructure of the metal [4,5]. To date both methods give useful but primarily qualitative information on bond integrity.

Keywords

Reflection Coefficient Area Fraction Crack Opening Displacement Defect Size Specular Reflection 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    T. A. Gray, F. J. Margetan and R. B. Thompson, “Ultrasonic NDE Techniques for Integrally Fabricated Rotors”, in Review of Progress in Quantitative NDE, D. O. Thompson and D. E. Chimenti, Eds. (Plenum Press, NY, 1988) 7B, 1327.Google Scholar
  2. 2.
    D. D. Palmer, C. D. Roberts, D. K. Rehbein, F. J. Smith and O. Buck, “Strength and Ultrasonic Characterization of Metallic Interfaces”, in Review of Progress in Quantitative NDE, D. O. Thompson and D. E. Chimenti, Eds. (Plenum Press, NY, 1988). 7B, 1335.Google Scholar
  3. 3.
    D. A. Sotiropolous and J. D. Achenbach, “Reflection of Ultrasonic Waves by an Imperfect Diffusion Bond”, in Review of Progress in Quantitative NDE, D. O. Thompson and D. E. Chimenti, Eds. (Plenum Press, NY, 1988), 7B, 1293.Google Scholar
  4. 4.
    G. Thomas and J. Spingarn, “Ultrasonic Nondestructive Evaluation of Solid State Welds”, in Review of Progress in Quantitative NDE, D. O. Thompson and D. E. Chimenti, Eds. (Plenum Press, NY, 1988), 7B, 1319.Google Scholar
  5. 5.
    J. H. Rose, “Ultrasonic Characterization of Solid-Solid Bonds from Microstructural Changes”, in Review of Progress in Quantitative NDE, D. O. Thompson and D. E. Chimenti, Eds. (Plenum Press, NY, 1988), 7B, 1311, (see also references herein).Google Scholar
  6. 6.
    J.-M. Baik and R. B. Thompson, J. Nondes. Eval. 4, 188 (1984).Google Scholar
  7. 7.
    D. A. Sotiropolous and J. D. Achenbach, J. Acoust. Soc. Am. 84, 752 (1988).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1989

Authors and Affiliations

  • James H. Rose
    • 1
  1. 1.Center for NDE and Ames Laboratory, USDOEIowa State UniversityAmesUSA

Personalised recommendations