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NDT-net (Rolf Diederichs)
UT-Encyclopedia
http://www.ndt.net/article/ut_az/ut_u/ut_u...
Acoustical Standards
Acoustical Society of America
http://asa.aip.org/map_standards.html
Vibrationdata.com Tutorials
The tutorials and course materials require a username and password which can be obtained with an annual subscription fee.
http://www.vibrationdata.com/tutorials.htm
Nondestructive Testing Information Analysis Center (NTIAC)
NTIAC is a Defense Technical Information Center (DTIC) funded, Department of Defense (DoD) Information Analysis Center operated by Texas Research Institute Austin, Inc.
http://www.ntiac.com/
Acoustic Cavitation
TU Darmstadt (Germany)
http://www.physik.tu-darmstadt.de/nlp/cavi...
How Stuff Works: How Ultrasound Works
Illustrated narrative takes you inside the ultrasound machine and shows you how this technique is used to look inside you.
http://www.howstuffworks.com/ultrasound.ht...
Nondestructive Material Testing with Ultrasonics
Introduction to the Basic Principles (Krautkrämer, NDt-net)
http://www.ndt.net/article/v05n09/berke/be...
BAE Systems (USA)
Technical reference development and research data concerning acoustical imaging.
http://www.iews.na.baesystems.com/iris/
Ultrasonics
Dedicated to the art and science of ultrasonic nondestructive testing and allied fields.
http://www.xdcr.com/ut.html
Super High Resolution Ultrasonic Measurement System
5-micro-meter resolution measurement by non contact system in the air; RS-232 interface; Thickness, Deviation, Distance, Level of any kind of material.
http://www.hedc.co.jp/
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