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Technical Discussions
Joel Norman
NDT Inspector
Canada, Joined Jun 2008, 5

Joel Norman

NDT Inspector
Canada,
Joined Jun 2008
5
06:33 Feb-25-2007
PA Gap Dimensions

Can someone explain to me exactly what the gap dimension is for a phased array probe? I haven't seen it on any probe data sheets but I have heard a few different explantions. Does it relate to the pitch?

I need to know as it is a recording requirement of ASME Sec. V, Art. 4, Appendix 4 - Examination Record (a).

Thanks,

Joel Norman


    
 
 
Ed Ginzel
R & D, -
Materials Research Institute, Canada, Joined Nov 1998, 1252

Ed Ginzel

R & D, -
Materials Research Institute,
Canada,
Joined Nov 1998
1252
01:00 Feb-25-2007
Re: PA Gap Dimensions
Joel:
The gap is just the space between the elements (i.e. the thickness of the saw that was used to slice the array). If you have a copy of the RD Tech "Introduction to Phased Array Ultrasonic Technology Applications" book, it is shown on page 107.
The Probe parameters such as these are essential variables so need to be itemised for a proper record of the equipment used.

Regards
Ed

----------- Start Original Message -----------
: Can someone explain to me exactly what the gap dimension is for a phased array probe? I haven't seen it on any probe data sheets but I have heard a few different explantions. Does it relate to the pitch?
: I need to know as it is a recording requirement of ASME Sec. V, Art. 4, Appendix 4 - Examination Record (a).
: Thanks,
: Joel Norman
------------ End Original Message ------------




    
 
 
Joel Norman
NDT Inspector
Canada, Joined Jun 2008, 5

Joel Norman

NDT Inspector
Canada,
Joined Jun 2008
5
03:55 Feb-26-2007
Re: PA Gap Dimensions
----------- Start Original Message -----------
: Joel:
: The gap is just the space between the elements (i.e. the thickness of the saw that was used to slice the array). If you have a copy of the RD Tech "Introduction to Phased Array Ultrasonic Technology Applications" book, it is shown on page 107.
: The Probe parameters such as these are essential variables so need to be itemised for a proper record of the equipment used.
: Regards
: Ed
:
: : Can someone explain to me exactly what the gap dimension is for a phased array probe? I haven't seen it on any probe data sheets but I have heard a few different explantions. Does it relate to the pitch?
: : I need to know as it is a recording requirement of ASME Sec. V, Art. 4, Appendix 4 - Examination Record (a).
: : Thanks,
: : Joel Norman
------------ End Original Message ------------

Thanks Ed.


    
 
 

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