![]() ![]() ![]() Reconstruction of crack shape Detected No. If the reconstruction of all of the cracks were performed at the same time, the above discrepancy would be reduced. In this case, the signal of the neighbor crack 2 cannot be deleted clearly using this assumption because the directions of cracks 2 and 3 are different. However, this probe also detects the edge of a different direction of crack. The assumption of superposition of the crack signals is considered in the case where the crack direction and the probe channel are the same. ![]() Table 7 shows the crack shapes predicted by the inverse analysis.īoth the length and the depth of the cracks show excellent agreement.įor R4 and R8, the discrepancy in the length is relatively large. Step 2) is repeated until the error becomes negligible. The crack shape is corrected so that the error between an estimated signal and the experiment signal are similar, and the signal is calculated again. Flow chart of the inverse analysis 1) The initial crack shape is given to a numerical model, and the fast forward simulator obtains the ECT signal. ![]()
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