Non vibrating capacitance probe for wear monitoring

Details Non vibrating capacitance probe for wear monitoring Non vibrating capacitance probe for wear monitoring

2007-09-04

2007-09-04

Larkin, Daniel S. (Department: 2856)

Measuring and testing

Surface and cutting edge testing

Roughness

C073S104000, C324S458000, C324S663000, C324S686000

Reissue Patent

active

09846835

ABSTRACT:
A non-vibrating capacitance probe for use as a non-contact sensor for tribological wear on a component. The device detects surface charge through temporal variation in the work function of a material. A reference electrode senses changing contact potential difference over the component surface, owing to compositional variation on the surface. Temporal variation in the contact potential difference induces a current through an electrical connection. This current is amplified and converted to a voltage signal by an electronic circuit with an operational amplifier.

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