Method and apparatus for obtaining non-destructive measurements for regularly-shaped objects

摘要

A method for obtaining nondestructive measurements of regularly-shaped objects, comprising: a) scanning an object (P) with at least one penetrating radiation source (72) along a plurality of paths through a cross-section of the object (P); b) generating signals representative of the radiation attenuation along each of the plurality of paths; c) converting the attenuation signals to signals representative of the density/length of the object (P) along each of the plurality of paths; d) processing the density/length signals to determine, by use of a computer model of the object to be examined, dimensional measurements of the cross-section of the object scanned; e) determining geometric parameters of the plurality of penetrating radiation paths; f) generating formulas representative of the radiation path parameters; and g) correcting the dimensional measurements using the formulas generated and by the aid of the determined geometric parameters to represent the radiation path parameters.