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Teletest Focus+ was the first system to use long-range guided wave ultrasonic testing to detect corrosion in pipelines.
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Kavita
Kavita
06:23 Apr-16-2003
Acoustic emission

I'm going throu one of the papers on acoustic emission and there it was mentioned that hydrophone system is hypothesized to be better than AE system. I was under impression that both of these sytems are same..as hydrophones are the main components of AE system. Can anybody clear my confusion.
Thanks in advance
Kavitha.


 
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John O'Brien
Consultant, -
Chevron ETC , USA, Joined Jan 2000, 280

John O'Brien

Consultant, -
Chevron ETC ,
USA,
Joined Jan 2000
280
08:41 Apr-19-2003
Re: Acoustic emission
It may be a case of misapplication of a word. Yes hydrophones are used in the AE Spectrum and the usual 'rule of thumb' distinction is probably whether the AE source is transmitted by liquid or airborne. In these cases the term 'hydrophone' is often used even through not strictly true. Structure borne AE sounds are usually termed sensor or even sometimes accelerometer.

If you describe the application you are reviewing people may be able to comment more specifically.


 
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