Лако-красочные материалы — производство

The BFS distribution was then investigated in FE analyses for the backface of aluminum substrate. A number of FE analyses were carried out by continuously varying the crack lengths in order to understand the behavior of BFS distribution during fatigue crack propagation. The strain values extracted from the FE analyses to construct the BFS profile is shown along the black bold lines (marked in orange arrow) shown in Figure 9(a) in order to match the installed strain sensor configuration as shown in Figure 8. From the analyses for different crack lengths, it is observed that the position of the minimum peak of the backface strain values follows the crack position with a 1.98 mm offset (Figure 9(b)), i. e., also in this case a linear relationship exists between the position of the crack tip and the location of the minimum peak of BFS distribution.