OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 22, Iss. 12 — Jun. 15, 1983
  • pp: 1875–1878

Ultrasonic measurements in fine powders using a photoacoustic pulse-generation technique

Wayne Imaino and Andrew C. Tam  »View Author Affiliations

Applied Optics, Vol. 22, Issue 12, pp. 1875-1878 (1983)

View Full Text Article

Enhanced HTML    Acrobat PDF (453 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



In this paper, we demonstrate the applicability of PA pulse generation for the monitoring of ultrasonic properties of powders, for example, uncured carbon-loaded epoxy resin powders, whose average particle diameter is ~15 μm. The acoustic pulse is generated by a short laser pulse (10-nsec or 1-μsec duration) of 1–10-mJ energy and is detected by a piezoelectric detector (polyvinylidene difluoride foil or commercial lead zirconate titanate transducer). This allows ultrasonic measurements over a broad range of porosity and pressure conditions, from loose unconsolidated powers to heat- and pressure-sintered pellets. For loose powders at atmospheric pressures (with a porosity of ~50%), the acoustic velocity is remarkably small (typically 3 × 103 cm/sec), and attenuation and dispersion are large. This appears to be the first demonstration of the use of a PA technique to measure ultrasonic properties in powders.

© 1983 Optical Society of America

Original Manuscript: January 13, 1983
Published: June 15, 1983

Wayne Imaino and Andrew C. Tam, "Ultrasonic measurements in fine powders using a photoacoustic pulse-generation technique," Appl. Opt. 22, 1875-1878 (1983)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. For a recent review, see A. L. Anderson, L. D. Hampton, J. Acoust. Soc. Am. 67, 1865 (1980). [CrossRef]
  2. A. B. Wood, A Textbook of Sound (Bell, London, 1941), pp. 361–362.
  3. M. A. Biot, J. Acoust. Soc. Am. 28, 168, 179 (1955). [CrossRef]
  4. F. Gassman, Geophysics 16, 673 (1951). [CrossRef]
  5. H. Deresiewicz, Adv. Appl. Mech. 5, 233 (1958). [CrossRef]
  6. See, for example, C. C. Pilbeam, J. R. Vaisnys, J. Geophys. Res. 78, 810 (1973) and references therein. [CrossRef]
  7. T. J. Plona, Appl. Phys. Lett. 36, 259 (1980). [CrossRef]
  8. D. L. Johnson, P. N. Sen, Phys. Rev. B 24, 2486 (1981). [CrossRef]
  9. Toners available from Hitachi Metal of America, 1 Red Oak Lane, White Plains, N.Y. 10604.
  10. Copper powder, 140 mesh, available from Sargent-Welch Scientific Co., 7300 N. Linda Ave., Skokie, Ill. 60077.
  11. Laser model LFDL-1, Candela Corp., 96 South Ave., Natick, Mass. 01760.
  12. Transducer model V306, Panametrics, 221 Crescent St., Waltham, Mass. 02154.
  13. Preamplifier model 1201, Ithaco, Inc., 735 W. Clinton St., Ithaca, N.Y. 14850.
  14. Oscilloscope model 7854, Tektronix Inc., P.O. Box 500, Beaverton, Ore. 97077.
  15. PVF2 foil model Kynar 5412-144A-2, Pennwalt Corp., 900 First Ave., P.O. Box C, King of Prussia, Pa. 19406.
  16. Laser model UV12, Molectron Corp., 177 N. Wolfe Rd., Sunnyvale, Calif. 94086.
  17. K. Kendall, Contemp. Phys. 21, 277 (1980). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited