Laser-based ultrasonics for QNDE applications

Pavel Fomitchov*, Liusheng S. Wang, J. Scott Steckenrider, Sridhar Krishnaswamy, Jan Drewes Achenbach

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Two methods - the empirical constants and decibel drop - for sizing defects, which are very close to the probe, in fiber reinforced composites using the pulse echo ultrasonic inspection method were developed and experimental data obtained. The methods relate the reduction in signal amplitude from a defect which is smaller than the probe diameter to the signal from a defect which is equal to or larger than the probe diameter. The empirical constants method was confirmed to produce a higher accuracy than the decibel drop method.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Number of pages11
ISBN (Print)0819423238
StatePublished - Dec 1 1997
EventInt. Conference on Experimental Mechanics: Advances and Applications - Singapore, Singapore
Duration: Dec 4 1996Dec 4 1996


OtherInt. Conference on Experimental Mechanics: Advances and Applications
CitySingapore, Singapore

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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