Dominique Braconnier

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Volume Focusing is a new technique based on Phased Array utilization. Some of its advantages are to inspect faster, to be able to make multi-mode inspection at once, and to increase the depth of field of the UT beam to inspect thick parts with only one probe. This document does not demonstrate or explains concepts, but provide an experimental point of view.(More)
This work deals with advanced and fast imaging techniques using phased array probes for non destructive evaluation or medical imaging. These methods employ a large amount of summations in order to focus at each pixel of the reconstruction image, which often represent a prohibitive computational cost. We present two acceleration methods, i.e. GPU computation(More)
Imaging using the total focusing method (TFM) is a popular tool in nondestructive evaluation and it becomes a standard. From full matrix capture, this method consists in focusing at each point of a defined reconstruction zone. It is generally more efficient than conventional phased array focusing that can focus at only a few points. Despite the good quality(More)
The Total Focusing method is an efficient approach to perform ultrasonic imaging of industrial components. It consists in focusing at each point of a reconstruction area by applying coherent summations. The main issue of this method is the computation time which makes real-time imaging difficult for large images. In this paper, we propose to use a migration(More)
In the nuclear maintenance field, there are cases where accessing a location where flaws must be tracked can only be done through a long UT path. In such cases, not only the lateral resolution, but also the inspection scanning time becomes an issue. This paper presents an original solution based on using large apertures and the Volume Focusing technique,(More)
In the nuclear maintenance field, there are cases where accessing a location where flaws must be detected can only be done through a long UT path. In such cases, not only the lateral resolution, but also the inspection scanning time becomes an issue. This paper presents an original solution based on using large apertures and Volume Focusing, providing(More)
In the manufacturing industry, more and more plate parts are inspected to detect tiny defects. As the rate of manufacturing increases, new and innovative inspection methods are required. This paper presents the method and results for inspecting sputtering targets, which are typically used in LCD manufacturing. The flaws are either inclusions or disbonds, in(More)
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