Patent ID: 6091500
Filing Date: 2000-07-18
Classification: G01B

Abstract:
A method of determining the parameter of an overclad tube comprising the steps of:determining the outside diameter (OD) of the tube at a plurality of points along the length thereof;measuring the wall thickness of the tube at said plurality of points and determining the inside diameter (ID) of the tube at each of said plurality of points;determining the bow of the tube along its length by determining the location of the center of the ID at each of said plurality of points relative to a straight line between the centers at the first of said plurality of points and at the last of said plurality of points;determining the straight through internal clearance (STIC) of the tube by creating a series of bow vectors from a least squares fit to said straight line and determining the camber of the bow from the greatest difference between the maxima and minima of the bow vectors, thereby determining the maximum diameter of a rod that can fit within the tube.