Method and apparatus for measuring surface roughness

Details Method and apparatus for measuring surface roughness Method and apparatus for measuring surface roughness

1983-08-31

1986-02-25

Gruber, Felix D.

Boots, shoes, and leggings

33 1Q, 73105, 364566, G01B 734, G06F 1520

Patent

active

045731314

ABSTRACT:
A surface roughness measuring method and apparatus for use in rail corrugations. The apparatus utilizes non-inertial sensors coupled to an on-board, real-time data processing unit. The method includes spacing a plurality of sensors along the surface at predetermined distances apart from one another, relatively moving the sensors and the surface, sampling data from the sensors at fixed sample distance intervals L, storing data from the sensors measured over a region of the surface, converting the data into second finite difference data over the region, converting the second finite difference data into data representative of a space curve of the surface, and displaying the space curve representative data to provide an indication of surface roughness.

REFERENCES:
patent: 3720818 (1973-03-01), Sprage et al.
patent: 3805036 (1974-04-01), Michaud et al.
patent: 4048849 (1977-09-01), Gocho et al.
patent: 4075888 (1978-02-01), Buhler
patent: 4084324 (1978-04-01), Whitehouse
patent: 4173073 (1979-11-01), Fukazawa et al.
patent: 4181958 (1980-01-01), Juengel et al.
patent: 4288855 (1981-09-01), Panetti

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