CT Handbook

Computed Tomography (CT) for Industrial Applications - the Outstanding Performance of Advanced CT Systems

By Gina Naujokat / August 13, 2020
Computed tomography (CT) is the most effective technology for non-destructive testing (NDT).The dataset obtained from a CT scan allows users to examine material samples, observe defects, perform measurements and identify materials with different densities. Engineers, builders, researchers and scien­tists can therefore discover features that could not previously be examined without destroying the test object. The data obtained permit the development of new geometries and new materials. A complete specimen framed in a single scan allows us to detect possible defects and dimensions. In the past, these scans and the subsequent processing phases lasted several hours, sometimes even days; with the modern hardware and software systems available today, scans and analyses are available in just a few minutes.

The term tomography consists of the Greek terms tomos (to cut) and graphein (to write), and literally means “depiction in sections or layers”. A CT scan generates a series of single or two-dimensional projected images from many different angles. The reconstruction software uses the images to reconstruct and generate the three-dimensional volume of the object to be analyzed.

The origins of CT scanning technology date back to the nine­teen-seventies. Computerized tomography was developed by two researchers - Godfrey Hounsfield and Allan Cormack – who won the Nobel Prize for physiology or medicine for their research in 1979.CT was initially designed to analyze the human brain, but the fields of application quickly expanded into the industrial and research sectors.

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