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Technical Discussions
Shashikant G
Consultant
Enrico Enterprises, India, Joined Jul 2004, 20

Shashikant G

Consultant
Enrico Enterprises,
India,
Joined Jul 2004
20
02:59 Aug-20-2005
Beam angle

Dear friends
I have some problem in calculating the beam divergency. For round type crystal ( say 10 m dia.)we are entering the diameter value of the crystal in the formula but if the crystal is rectangle ( say 9 x 8 mm ) then what value we have to enter in the formula either diagonal value or the size value i.e. 8mm or 9mm ?
Please guide me and what is the different between round type crystal and rectangle type crystal sound beam?
If i am testing the weld of pipe, diameter is 20 " and wall thickness 15 mm and using 45 degree angle probe with 8 x 9 mm rectangle crystal . I place the probe at 2 skip distance from the N5 type notch. What would be the beam diversion angle?
thanking you




 
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