Journal of Materials Science

, Volume 19, Issue 6, pp 1897–1903 | Cite as

Subsurface imaging of glass fibres in a polycarbonate composite by acoustic microscopy

  • R. L. Hollis
  • R. Hammer
  • M. Y. Al-Jaroudi


Using reflection acoustic microscopy at 800 MHz, we have imaged 10 μm diameter glass fibres embedded in an optically opaque Makrolon™ (polycarbonate) matrix. Maximum depth of acoustic waves contributing to image formation was 105 μm, with imaging resolution of several microns at shallower depths. The areal fibre distribution, lengths, and orientations were readily determined non-destructively from the acoustic images. Additionally, marked differences were observed between known normally bonded samples with high strengths, and poorly bonded samples from parts which exhibited fracturing and premature failures. In addition to acoustic microscopy, bulk sound velocity measurements were made and used to compute focus aberration for subsurface imaging. Results were correlated with destructive SEM techniques.


Acoustic Wave Glass Fibre Polycarbonate Sound Velocity Image Formation 
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.
    C. A. Harper, (ed.), “Handbook of Plastics and Elastomers” (McGraw-Hill, New York, 1975).Google Scholar
  2. 2.
    W. S. Miller, (ed.), Machine Design 55 (1983) 166.Google Scholar
  3. 3.
    Bayer report E55-756-65943, edition KB40950, August, 1975.Google Scholar
  4. 4.
    J. E. Zimmer and J. R. Cost, J. Acoust. Soc. Amer 47 (1969) 795.Google Scholar
  5. 5.
    R. A. Lemons and C. F. Quate, in 1973 Ultrasonics Symposium proceedings, IEEE cat. no. 73 (IEEE, New York, 1974) pp. 18–21.Google Scholar
  6. 6.
    R. L. Hollis and R. Hammer, in “Scanned Image Microscopy”, edited by E. A. Ash (Academic Press, New York, 1980) pp. 155–64.Google Scholar
  7. 7.
    V. B. Jipson, Appl. Phys. Lett. 35 (1979) 385.Google Scholar
  8. 8.
    L. M. Brekhovskikh, “Waves in Layered Media” (Academic Press, New York, 1970) pp. 15–36.Google Scholar

Copyright information

© Chapman and Hall Ltd 1984

Authors and Affiliations

  • R. L. Hollis
    • 1
  • R. Hammer
    • 1
  • M. Y. Al-Jaroudi
    • 2
  1. 1.IBM Thomas J. Watson Research CenterYorktown HeightsUSA
  2. 2.Material Analysis LaboratoryIBM Svenska AktiebolagJarfallaSweden

Personalised recommendations