Non-vibrating capacitance probe for wear monitoring

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

1997-11-14

1999-11-02

Larkin, Daniel S.

Measuring and testing

Surface and cutting edge testing

Roughness

73104, 324458, 324663, 324686, G01R 2726

Patent

active

059748699

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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