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March 1997

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Subject:
Acoustic imaging of boards
From:
"robert larmouth" <[log in to unmask]>
Date:
Fri, 07 Mar 97 09:22:17 PST
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     I have a two part question regarding acoustic imaging of bare boards.  
     First, how effective are these techniques (e.g. SLAM, C-SCAN) at 
     detecting defects like delamination and/or voids in multilayer 
     constructions involving several materials?  Second, are these 
     techniques starting to be used routinely for inspection and acceptance 
     testing?  Thanks for your help.
     
     Bob Larmouth
     [log in to unmask]

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