On computer modelling of operations, geometric characteristics and methods of pulsed optical tomography of nuclear fuel microobjects

Abstract

The paper refers to the area of morphological processing of projection images and its goal is to design some computer models of basic operations, geometric properties and methods of pulsed optical tomography which provide a high-speed production operational control and sorting of each microobjet (MO) of nuclear fuel in their flow according to their size and shape. Based on the proposed computer models, a precision laser method of industrial differential control and quality control of an MO flow of nuclear fuel was developed and experimentally tested. The method uses the statistical reconstruction of the size (D) and shape (K) of each microobject and takes into account the overall dimensions of the outlines of three mutually orthogonal two-dimensional pulsed discrete projection images of a microobject. The processing speed of this method is 100 MO/s in the diameter range of 400–1500 µm. The relative error of an MO diameter control is no more than 0.25% (at the reliability of PD = 0.7 and K = 1.3 relative units), and the relative error of the non-sphericity coefficient control lies in the range of 2.3% (PK = 0.7 and K = 1.3) to 0.6% (PK = 0.96 and K = 1.05).