The distinction of Neutron Tomography for the detection of the presence of air voids inside the material (porosity) is pronounced,as clearly
shown in Fig. 9. Surface plots tool was employed for the two porosity 1 and 2 to investigate the porosity shapes.
Fig. 11 shows the 3D surface plot of porosity 1 (upper) and 2(down).
Referring to porosity 1,the deepest depth was found to be 2.66 mm and for porosity 2 it is 2.12 mm.