Measurement of Plating Stress Using a Kushner Stressometer With Electronic Deflection Sensor

摘要

The Stresometer, first introduced by Joseph B. Kushner in 1954, measures the stress of a depositplated onto a thin metal disk. Stress in the deposit results in a bending of the disk with theresulting displacement of the center of the disk directly proportional to the magnitude of thestess. Displacement was originally measured by using a liquid-filled chamber in contact with thedisk and a vertical capillary tube. Modem sensors and electronics have allowed disk bendingcaused by stress to be measured more accurately and easily. Data will be presented from aninstrument modified to use an LVDT linear displacement transducer in place of the liquid-filledcapillary.