Institute for Aerospace Research of the
National Research Council of Canada

The Institute for Aerospace Research (IAR) is Canada's national aerospace laboratory. IAR is one of the National Research Council's research institutes.

• Air-Coupled Ultrasonics

This new method allows non-destructive ultrasonic testing of materials without the
usual need for liquid or gelatinous couplants between the ultrasonic transducer
and the specimen of interest.

Both wideband and narrow-band studies are possible, the latter being accomplished
via a RITEC RAM-10000 super-heterodyned receiver for improved signal-to-noise ratios. System control is completely automated through a PC, and allows air-coupled ultrasonic resonance spectroscopy studies to be made with material samples through a special swept-frequency mode of operation. http://www.nrc.ca/iar/smp_nde-e.html

CNDE Johns Hopkins University
http://www.cnde.com/organiz.htm

National Institutes for Science and Technology (NIST) Boulder
http://www.boulder.nist.gov/div853/ucm.htm

Bernie Tittman
http://www.personal.psu.edu/faculty/h/m/hmt111/UMCM/

http://dmoz.org/Science/Technology/Acoustics,_Ultrasound_and_
Vibration/Ultrasound/Companies/

http://www.asnt.org/links/corpcommunity.htm