Neutron induced radiography: a technique to inspect the internal structure of thin samples

Abstract

The present paper describes a radiography technique to inspect low thickness samples, on the order of micra. The penetrating radiation are charged particles generated by a lithium fluoride screen irradiated by thermal neutrons. The film used to register the images is a solid state nuclear track detector and the experimental conditions to obtain the best radiography are provided. A digital system for data acquisition and image processing was also used.

Wind Turbine Blade Nondestructive Testing with a Transportable Radiography System

“…Both methods can be used either in 2D mode to take radiographs or with a tomography setup in 3D mode. Radiography allows the detection of internal flaws and defects such as cracks, corrosion, inclusions, and thickness variations; consequently, it is a technique of growing importance to science and industry in order to determine structural defects [3,4].…”

Non destructive testing of medium and high voltage cables with a transportable radiography system

“…In contrast to X-rays, thermal neutrons are particularly attenuated by certain light materials (H, Li, B, C,) whereas they penetrate easily through heavy elements (Pb, Bi, U, W) [6]. The technique is widely used in security applications, in automotive and aerospace applications, engineering studies and industry in order to determine structural defects, geology, medicine and biological research, [7][8][9][10][11][12][13][14][15][16][17]. In the high voltage cables there are simultaneously more than one light material (usually XLPE and PVC) which is practical impossible to distinct with the traditional X-ray systems [18][19][20].…”