Method and apparatus for measuring overclad tubes

Details Method and apparatus for measuring overclad tubes Method and apparatus for measuring overclad tubes

1998-12-16

2000-07-18

Font, Frank G.

Optics: measuring and testing

By configuration comparison

With photosensitive film or plate

356 731, 25055924, 25055928, G01B 1102, G01N 2100

Patent

active

060915005

ABSTRACT:
A method and apparatus for measuring and determining certain parameters of an overclad tube measures the OD and the wall thickness of the tube at a plurality of longitudinal points and a plurality of angles at each point or longitudinal position. A laser device measures the OD and an ultrasonic transducer measures the wall thickness. The inside diameter of the tube at each point is determined by subtracting the wall thickness from the measured outside diameter. From the data then obtained, the straight through internal clearance of the tube is calculated by determining a plurality of bow vectors which represent the deviations of the tube inner diameter from a least squares fit.

REFERENCES:
patent: 4638168 (1987-01-01), Marino et al.
patent: 4978223 (1990-12-01), Kutchenriter et al.
patent: 5118954 (1992-06-01), Grosso et al.
patent: 5867275 (1999-02-01), Curtis, Jr. et al.

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