Clamping mechanism for shear testing apparatus
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United States of America Patent
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Apr 23, 2013
Grant Date -
Sep 8, 2011
app pub date -
Feb 25, 2011
filing date -
Mar 5, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A shear test device for testing the strength of attachment between a bond and an electronic substrate. The device incorporates a clamping mechanism and a shear test tool that are mounted on a baseplate. During a set-up procedure, the shear test tool is movable relative to the baseplate. During a test procedure, the shear test tool is clamped by the clamping mechanism in a fixed position relative to the baseplate. At least one abutment is provided that is fixed in position relative to the baseplate. During the test procedure, a drive mechanism provides relative movement between the shear test tool and the bond to cause the shear test tool to shear the bond off the substrate. The at least one abutment provides an additional clamping force on the test tool while the test tool is shearing the bond off of the substrate. Strain gauges associated with the shear test tool provide signals to an electric circuit indicating the strength of attachment between the bond and the substrate.
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