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05:06 Dec-02-2004
IOW Block, 5 Small Holes

What is the purpose of the 5 small holes that are grouped near the bottom of the IOW block?


 
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John Woollven
John Woollven
08:06 Dec-02-2004
Re: IOW Block, 5 Small Holes
----------- Start Original Message -----------
: What is the purpose of the 5 small holes that are grouped near the bottom of the IOW block?
------------ End Original Message ------------

The IOW beam profile block is used to plot the vertical and horizontal beam profiles of a transducer.

According to The Welding Institute's publication "Procedures and recommendations for the ultrasonic testing of butt welds" the five holes that you describe are "an alternative site for a second set of holes (spaced to suit the user) to meet cases where it is desired to test the resolving power of large low-frequency probes e.g. initial search probes, at angles greater than 45 degrees".

Hope this helps!



 
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