Phased array UT inspections involving linear arrays, using either sectorial scanning or multiple-angle raster scanning, are commonly used in the nuclear industry, and have even been introduced in various codes and standards. But the industry is continuously looking for innovative inspection solutions to more challenging inspection configurations, and this requires advanced software features and...

Simple, reliable and accurate surface quality control

The condition of the surface through which a sound beam enters a material is an important factor in ultrasonic non-destructive testing(1). Detection of discontinuities such as cracks, voids and porosities in castings is greatly affected by the extent of roughness. Increased roughness reduces the transmitted energy of the sound beam and this, in turn, reduces the amplitude of the received signal...

We have developed optical flow based techniques for finding the surface strain of an untreated sample of material from a sequence of images taken during the application of force from a test rig. Not all optical flow algorithms have suitable functional characteristics for this task, as image sequences are characterised by both shortand long-range displacements, non-rigid deformations, as well as...

We introduce a new environmentally robust optical interferometry system for fast surface profile measurement. The proposed white light channelled spectrum Interferometer (WLCSI) is effective for applications in on-line surface inspection because it can obtain a surface profile in a single shot. Compared to the traditional spectral interferometry techniques, cylindrical lens is used in the Miche...

This paper provides a novel approach to stitching surface images of rotationally symmetric parts. It presents process pipeline that uses feature-based create distortion-free and true-to-life image from video file. The developed thus enables, for example, condition monitoring without having view many individual images. For validation purposes, this will be demonstrated in the using concrete exam...