Joe,
Since you are likely to disallow use of Plastigauge, or similar products ... can you optically measure the delta between the top of the board and a known point on the component, thereby inferring the gap by subtraction - without dissassembly?
Many quality microscopes have a calibrated vertical vernier that can be used for height measurement.
Will the compression pad show up under x-ray? Could you ultimately go through the test pieces and math to equate volume to thickness [using Plastigauge]??
Steve C
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From: TechNet [mailto:[log in to unmask]] On Behalf Of Joe Macko
Sent: Tuesday, February 16, 2010 3:34 PM
To: [log in to unmask]
Subject: [TN] Best way to measure "actual" themal pad compression
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