Method of measuring surface roughness

Details Method of measuring surface roughness Method of measuring surface roughness

1976-10-15

1977-08-23

Ruehl, Charles A.

Measuring and testing

Surface and cutting edge testing

Roughness

G01B 528

Patent

active

040431878

ABSTRACT:
A method of measuring surface roughness of an object indirectly according to a tracer method by forming two different kinds of replicas. The first replica is made of a flexible material which can be easily stripped off from either the object surface or from the surface of the second replica. The second replica is made of a material with high hardness so that it will not suffer from any scratch or flaw from the tracer even when it hits the replica. Surface configuration of the object to be measured is transferred to the first replica and the surface configuration of the first replica is then transferred to the second replica, and surface roughness of this second replica is measured with a tracer.

REFERENCES:
patent: 2601703 (1952-07-01), Sawyer
V. P. Butin-"Ndt by the Replica Method" - Non-Destructive Testing - vol. 3, No. 3, June 1970, pp. 173-176.

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