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HIGH PRODUCTION NON-DESTRUCTIVE X-RAY TESTING EQUIPMENT FOR INDUSTRIAL PRODUCTION LINE MONITORING WITH ON-LINE COMMPUTER EVALUATION

Objective

The aim of the proposal is the investigation and the development of an automatic X-ray NDT analysis using a new sensor concept with customised integrated pulse handling and readout together with special multichannel image processing.
The development of an X-ray testing equipment for nondestructive industrial production line monitoring was successfully finished with a prototype which demonstrates the properties of the machine.

Compared to existing equipment the main progress was made in:
a new detector technology which also required new basic efforts in crystal growing;
a new kind of integrated multiplexing preamplifier;
versatile image processing modules;
appropriate software packages;
a mechanical and electromechanical layout which matches the needs of the users.

Use of the X-ray testing equipment is already envisaged in:
detection of melted centres in insulation rock wool;
inspection of foam materials for holes or foreign material;
detection of holes or foreign material in potatoes;
detection of foreign material (especially metal) in napkins.
This approach makes use of energy selective X-ray sensors associated with a low noise linear integrated electronics as well as an integrated image processing system. The main tasks are :

-research and development of cadmium telluride energy selective sensors built together in blocks of up to 1500 elements
-specification and design of a suitable integrated preamplifier followed by other integrated pulse handling electronics adapted to these sensors
-design and development of a flexible X-ray generator adapted to both sensor and scanning technologies
-concept and prototype development of special image processing hard- and software to handle the multidimensional data delivered by the material discriminating NDT system
-integration of the components to a prototype system to verify the functionality.

Coordinator

Heimann GmbH
Address
Weher Koeppel 6
6200 Wiesbaden
Germany

Participants (4)

Centre National de la Recherche Scientifique (CNRS)
France
Address

Strasbourg
Eurorad SARL
France
Address
20 Rue De Loess
67037 Strasbourg
Rutherford Appleton Laboratory (RAL)
United Kingdom
Address
Chilton
OX11 0QX Didcot
Technische Hochschule Darmstadt
Germany
Address
Karolinenplatz, 5,
64289 Darmstadt