Unless it's so thick that no signal will go through it should work. That is why  a low frequency trancducer is used and that is why it should be a through mode - it won't tell where (which layers) but the location (X:Y)



Vladimir



----- Original Message -----

From: Bev Christian <[log in to unmask]>

To: TechNet E-Mail Forum <[log in to unmask]>; Igoshev, Vladimir

Sent: Fri Jan 02 09:14:24 2009

Subject: RE: [TN] PWB Delamination Detection by C-SAM



But won't it depend on how thick the board is - how many layers?  If it

is a really thick one and the delam is in the middle...

Bev



-----Original Message-----

From: TechNet [mailto:[log in to unmask]] On Behalf Of Igoshev, Vladimir

Sent: Friday, January 02, 2009 9:13 AM

To: [log in to unmask]

Subject: Re: [TN] PWB Delamination Detection by C-SAM



Hi Victor,



Through scan with a low frequency (30 or 15) transducer should be able

to do it.



Regards,



Vladimir



----- Original Message -----

From: TechNet <[log in to unmask]>

To: [log in to unmask] <[log in to unmask]>

Sent: Fri Jan 02 09:09:57 2009

Subject: [TN] PWB Delamination Detection by C-SAM



Fellow TechNetters: 



   Searching for supporting information on non destructive analysis with

C-SAM to confirm raw board delamination.   



Victor,



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