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Non-destructive Hole Smear Measurement Using Slam

IP.com Disclosure Number: IPCOM000065642D
Original Publication Date: 1985-Apr-01
Included in the Prior Art Database: 2005-Feb-19

Publishing Venue

IBM

Related People

Authors:
Hoffarth, JG Suryadevara, B Welsh, JA [+details]

Abstract

In accordance with this invention, the Scanning Laser Accoustic Microscope (SLAM) is used for nondestructively measuring the extent of smear on the inner copper planes in printed circuit board through holes.