#ndt New inline-inspection applications are being developed for industry thanks to advances in high-speed, low-coherence interferometry, a high-resolution three-dimensional (3D) imaging technology. Precision bore holes, for example, must adhere to strict geometric dimensioning and tolerancing (GD&T), including straightness, cylindricity, circularity, taper, distortion, runout, roughness characteristics, semi-transparent coating thickness, or defect characterization. Also, features on the insides of bores, such a
Source: NDT