Apparatus for determining the dynamic complex hardness of resili

Details Apparatus for determining the dynamic complex hardness of resili Apparatus for determining the dynamic complex hardness of resili

1975-09-08

1976-09-14

Gill, James J.

Measuring and testing

Hardness

73 81, 73 89, G01N 332

Patent

active

039799484

ABSTRACT:
Apparatus for determining the dynamic complex hardness of resilient roll coverings including a portable housing for positioning directly on the resilient roll covering to be tested. The portable housing includes an adjustable probe coupled to force and displacement transducers. The adjustable probe is placed in contact with the resilient roll covering and vibrated. The transducers produce output signals in accordance with the force encountered by and displacement of the probe during displacement of the surface of the resilient roll covering. The output signals from the transducers are coupled to dynamic hardness and loss angle circuitry for providing direct measurements of the magnitude and phase angle of the dynamic complex hardness.

REFERENCES:
patent: 3256741 (1966-06-01), Wise
patent: 3550427 (1970-12-01), Sueyoshi

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