The online Journal of Nondestructive Testing & Ultrasonics  
   Journal, search engine, lexicon and more
   http://www.ndt.net/

S. Berliner, III's Ultrasonics Page  
   Ultrasonic Processing "changing materials with high-intensity sound"
   http://home.att.net/~Berliner-Ultrasonics/u-s.html

Ultrasonic Drilling Homepage  
   JPL's NDEAA (NASA)
   http://ndeaa.jpl.nasa.gov/nasa-nde/usdc/usdc.htm

Ultrasonic C-Scan History  
   UXR
   http://www.uxr.com/webpg9.htm

Ultrasonic methods for characterizing polymeric materials  
   Chemical Innovation (Feb. 2000)
   http://pubs.acs.org/hotartcl/ci/00/feb/alig.html

Transducer Beam Characteristics  
   Bioacoustics Research lab
   http://www.brl.uiuc.edu/Projects/Beam.htm

Coxmoor books  
   Books about: maintenance engineering and condition monitoring information such as vibration and noise analysis, thermography, wear debris and oil analysis, corrosion, lubrication, acoustic emissions and ultrasonics, level and leakage, powe
   http://www.coxmoor.com/

Ultrasonic Humidifiers  
   Federal Technology Alert
   http://www.pnl.gov/fta/14_ultrahumid/14_ultrahumid.htm

Ultrasound Critical-angle Reflectometry  
   Fundamental principles (The University of Texas Southwestern Medical Center at Dallas).
   http://www.swmed.edu/home_pages/ucrlab/

International Symposium on Acoustic Tomography and Acoustic Thermometry  
   Office of Naval Research Asia Ocean Science and Engineering Newsletter # 12 (February 1999) Hassan B. Ali
   http://www.onr.navy.mil/onrasia/oceans/ali12.html

Ultrasonic Flowmeters  
   How ultrasonic transit time flowmeters work (by Eesiflo)
   http://www.flowmeters.f2s.com/article.htm

Ultrasonic Cleaning of Gun Parts  
   Or How to Clean a Beretta Gas Piston Without Scrubbing - Roland Leong
   http://shotgunreport.com/Articles/Ultrasonics/Ultrasonics.html

Ultrasonic Flowmeter Basics  
   Sensors Magazine - October 1997
   http://www.sensorsmag.com/articles/1097/flow1097/main.shtml

Frustrated total internal reflection acoustic field sensor  
   United States Patent: 6,056,696
   http://164.195.100.11/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=/netahtml/search-adv.htm&r=12&p=1&f=G&l=50&d=curr&S1=(breast.ACLM.+AND+cancer.ACLM.)&OS=aclm/breast+and+aclm/cancer&RS=(ACLM/breast+AND+ACLM/cancer)

Nicolas Felix : Ultrasound Transducer Engineering  
   Resources on ultrasound transducer design, characterization and modeling.
   http://www.ifrance.com/ultrasons/

The Physics of Diagnostic Ultrasound  
   David T J Liley
   http://marr.bsee.swin.edu.au/~dtl/het408/ultrasound/ultrasound.html

The Doppler Principle  
   David T J Liley
   http://marr.bsee.swin.edu.au/~dtl/het408/doppler/doppler.html

Image Reconstruction from Projections  
   David T J Liley
   http://marr.bsee.swin.edu.au/~dtl/het408/backproj/backproj.html

Measuring Vibration Characteristics at large Amplitude Region of Materials for High Power Ultrasonic Vibration System  
   K. Nakamura. Tokyo Institute of technology.
   http://www-ueha.pi.titech.ac.jp/~knakamur/High-vib/sld001.htm

Schlierent visualization of ultrasound - video sequences  
   Cambridge Ultrasonics
   http://www.cambridge-en.com/Ultrasonics/Video%20sequences%201.html

Materials Testing at BAE Systems - Simulation software  
   Physics in Industry
   http://atschool.eduweb.co.uk/kowessex/ba/index.htm

Principles of Computerized Tomographic Imaging  
   
   http://www.slaney.org/pct/

Synthetic Aperture Imaging  
   Bioacoustics Research lab
   http://www.brl.uiuc.edu/projects/Aperture.htm

Acoustic Saturation  
   The maximum value of acoustic pressure within an ultrasonic beam is limited by acoustic saturation. (Bioacoustic Research Lab.)
   http://www.brl.uiuc.edu/projects/saturation.htm

Ultrasonic Cleaning  
   Jeff Hancock (Blue Wave Ultrasonics)
   http://www.bluewaveinc.com/reprint.htm#anchor1147183

Ultrasonic Cleaning Theory and Application  
   PMR Systems
   http://www.pmrsystems.com/contents.html

Ultrasonic detection (Technology overview)  
   Gary Mohr, UE SYSTEMS INC.
   http://uesystems.com/techview.htm

The Measurement of Sand Ripples in Relation to Sediment Transport and Beach Erosion  
   By: Jason Mandly Under the Mentorship of Dr. Jerome Maa Assisted by Mr. J. Y. Qie
   http://www.vims.edu/adv/ed/gs/1999/mandly/sld001.htm

Sonar Tutorial  
   Lowrance Electronics
   http://www.lowrance.com/marine/tutorial/Default.asp

Ultrasound digs deep  
   Although ultrasound instruments have been a part of the embedded landscape for decades, designers continue to refine techniques and devise new applications. Ultrasound might fit into your next embedded design. (EDN Access--01.20.2000)
   http://www.ednmag.com/ednmag/reg/2000/01202000/02hiw.htm

A seminar on k-space applied to medical ultrasound  
   Martin E. Anderson and Gregg E. Trahey; Department of Biomedical Engineering, Duke University, April 12, 2000
   http://dukemil.egr.duke.edu/Ultrasound/k-space/bme265.htm

Swath Sonar Sites  
   available through the Ocean Mapping Group.
   http://www.omg.unb.ca/omg/SwathSites.html

Chris Cheers' Power Ultrasonics web site  
   Independent guide to high power ultrasonics - with a database of industrial suppliers and descriptions of equipment and processes including ultrasonic plastic welding, ultrasonic metal welding, ultrasonic cleaning and sonochemistry.
   http://www.powerultrasonics.com

Acoustic Microscopy  
   Scanning Acoustic Microscopy (SAM) is a non-destructive failure analysis or inspection technique. SAM can be performed with either the Scanning Laser Acoustic Microscope (SLAM) or the C-Mode SAM (C-SAM). (University of Maryland)
   http://www.calce.umd.edu/general/Facilities/sam.htm

Ultrasonic Cleaning Process  
   Lists different methods, power sources, chemicals and problems associated with this procedure.
   http://www.tmasc.com/ultrasonic_cleaning_process.htm

A Small Introduction into Scanning Acoustic Microscopy  
   University of Wuppertal (Germany).
   http://www.electronics.uni-wuppertal.de/forschung/thermak.html

Piezocomposite materials  
   (Imasonic - France)
   http://www.imasonic.com/Company/Piezocomposite.php