Evaluation of accuracy of seamless steel tube scanning by industrial computed tomography

Abstract

Measurement by computed tomography is very useful in evaluation of dimensions and internal structure. There are still some problems which need to be solved. Scanning accuracy depends, among other things, on the part´s material. Metal parts have high density and their scanning leads many times to failure. This paper deals with evaluation of accuracy of seamless steel tube scanning by industrial computed tomography. This method of scanning can lead to substitution of destructive method for measurement, but it is necessary to have knowledge if the scan has required accuracy. The tube with different diameters in length is scanned by X-Ray beam and it is evaluated inner and outer diameter, concentricity and wall thickness in 8 sections. The accuracy of scan is compared with reference values achieved by coordinate measuring machine in the same sections.

A Novel Polymer Concrete Composite with GFRP Waste: Applications, Morphology, and Porosity Characterization

“…The use of X-ray Computed Tomography (CT) is an accurate way to analyze the porosity of the material (pore distribution, pore size, and pore shape). The accuracy of some modern industrial X-ray CT machines can be compared directly to the accuracy of some coordinate measuring machines (CMM) [12].CT is a radiographic examination technique for metals, plastics, ceramics, and metallic and non-metallic composite materials that generates digital images of an object in three dimensions, including the interior structure. This technique allows for "the non-destructive physical, and to a limited extent, chemical characterization of the internal structure of materials" [13].…”

“…The use of X-ray Computed Tomography (CT) is an accurate way to analyze the porosity of the material (pore distribution, pore size, and pore shape). The accuracy of some modern industrial X-ray CT machines can be compared directly to the accuracy of some coordinate measuring machines (CMM) [12].…”