Method and apparatus for magnetically measuring the thickness of

Details Method and apparatus for magnetically measuring the thickness of Method and apparatus for magnetically measuring the thickness of

1991-06-06

1993-01-19

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324231, G01B 710, G01R 3312

Patent

active

051809800

ABSTRACT:
Method for measuring the thickness of a lubricant film between two surfaces which are in motion with regard to one another, characterized by the fact that a lubricant with high relative permeability is used, whereby the polar pieces of an electromagnetic sensor are brought into contact with the lubricant film to be measured in such manner that they are bridged by the lubricant film.

REFERENCES:
patent: 3249860 (1966-05-01), Huggins
patent: 3981844 (1976-09-01), Romankiw
patent: 4519931 (1985-05-01), Soga et al.
patent: 4661774 (1987-04-01), Montgomery
Poon, S. Y. ; "An improved magnetic reluctance transducer for the measurement of thin lubricant film thickness", Journal of Physics E: Scientific Instruments, vol. 3, Jul. 1970 p. 507-510.
Areflev et al; "Method of measuring . . . between rolling cylinders", Russian Engineering Journal, vol. 55, No. 2, p. 76, 1975.

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