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AMDATA Products (WesDyne)
AMDATA is an engineering and technical services firm dedicated to providing standard and custom nondestructive examinations (NDE) products and systems

525 views
04:02 Jan-04-2000

Tiah Nam Kuan Paul

NDT Inspector
Singapore,
Joined Jan 2000
5
Beam spread


Is it required to do a check on beam spread periodically?


 
03:23 Jan-05-2000

J. Mark Davis

Teacher, And Consultant
University of Ultrasonics, Birmingham, Alabama,
USA,
Joined Mar 2000
84
Re: Beam spread :
: Is it required to do a check on beam spread periodically?

Recalling the ASME Code, it was required when you were to size a flaw. Currently flaw sizing using Time of Flight (TOF) methods and Creeping Wave methods this is no longer required.

Generally, when using a dB drop flaw sizing method you tend to size the beam spread when the flaw is smaller than the beam spread.




 
05:13 Feb-16-2000
andy cunningham
Re: Beam spread : dont just read, think. sound will propagate through a medium as a hemisphere regardless of wavelength. the so called beam spread is the use of 3 angles of different intensities. tofd would not work if you think of sound as a beam. as i said before read think and understand. dont be mindless and regurgitate someone elses miscomprehension
does that answer your question (no)
yes do the checks to keep to the requirments 0f a quality system.
: Is it required to do a check on beam spread periodically?
all the best acc




 


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