Measuring and testing – By abrasion – milling – rubbing – or scuffing
Patent
1997-11-03
1999-10-19
Williams, Hezron E
Measuring and testing
By abrasion, milling, rubbing, or scuffing
73577, G01N 356, G01M 702
Patent
active
059692260
ABSTRACT:
A hardened steel ball presses against a vibrating sample to be subject to fretting. The amplitude and frequency of vibration can be precisely controlled by a stack of piezoelectric transducers. The biasing force of the steel ball against the sample can also be precisely controlled by a pulley supported weight that pulls against a movable mass coupled to the steel ball. The movable mass has sufficient inertial mass to eliminate the movement of the ball which might otherwise be produced in reaction to the vibration of the sample, which need not be absolutely flat.
REFERENCES:
patent: 3945241 (1976-03-01), Brown
patent: 4507953 (1985-04-01), Vandermeerssche
patent: 5377525 (1995-01-01), Hutchinson et al.
Bastias Pedro C.
Wert James J.
Xue Miangui
Nathans Robert L.
Soliz Chad
The United States of America as represented by the Secretary of
Williams Hezron E
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