Home > Science > Technology > Acoustics, Ultrasound and Vibration > Ultrasound
Ultrasound is cyclic sound pressure with a frequency of 20 kilohertz or over, greater than the upper limit of human hearing.
http://www.ndt.net/article/v05n09/berke/berke1.htm
Introduction to the basic principles.
http://www.xdcr.com/ut.html
Dedicated to the art and science of ultrasonic nondestructive testing and allied fields.
http://www.vibrationdata.com/tutorials.htm
The tutorials and course materials require a username and password which can be obtained with an annual subscription fee.
Home > Science > Technology > Acoustics, Ultrasound and Vibration > Ultrasound
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