System for determining tube eccentricity

Details System for determining tube eccentricity System for determining tube eccentricity

1977-02-28

1978-07-11

Queisser, Richard C.

Measuring and testing

Vibration

By mechanical waves

73625, 73638, 73641, G01N 2904

Patent

active

040994180

ABSTRACT:
A system for continuously determining the eccentric characteristics of a tube wall, including a positioning assembly supported by the tube when it travels in its lengthwise direction. Two thickness sensors are supported by the positioning assembly and have sensing axes disposed in a predetermined angular relation with respect to one another about the periphery of the tube. The two sensors continuously measure the wall thickness of the tube at the predetermined angular locations as the tube moves in its lengthwise direction. Signal processing circuits are provided for continuously computing the eccentricity characteristics of the tube based entirely upon the comparative values of the thickness readings of the sensors.

REFERENCES:
patent: 3426437 (1969-02-01), Rebhun et al.
patent: 3732726 (1973-05-01), Ferber
patent: 3827287 (1974-08-01), Boggs et al.
patent: 3828609 (1974-08-01), Furon et al.
patent: 3850026 (1974-11-01), Lund et al.

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