Aluminum Company of America

David M Stricker

Nicholaas L Brouwer

Robert F Bennett

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.

System for determining tube eccentricity

A system for determining the eccentric characteristics of a tube wall comprising a positioning assembly supported by the tube which is moving in its lengthwise direction, and a plurality of thickness sensors supported by the positioning assembly having sensing axes disposed in predetermined angular relation with respect to one another for continuously measuring the wall thickness of the tube at predetermined angular locations about its periphery as it moves in its lengthwise direction. A signal processing means is provided for continuously computing the eccentricity characteristics of the tube based entirely upon the comparative values of the thickness readings of the sensors.

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Lower Burrell, PA, United States of America

David M Stricker