Figure 17From: Application of the topological derivative to post-processing infrared time-harmonic thermograms for defect detectionReconstruction of the groove-shaped defect. Upper left: Topological derivative at \(x=0\). Upper right: Topological derivative at \(y=-0.125\). Lower left: Topological derivative at \(z=-0.25\). Lower right: Perspective showing the reconstruction for \(\lambda =0.4\) and the original defectBack to article page