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Metris became a member of the Nikon group
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News&Events > News archive > Metris high-power micro-focus computed tomography system brings crystal clear inspection of turbine
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Metris XT H 450 LC high-power micro-focus computed tomography system brings crystal clear inspection of turbine blades and dense parts
Leuven, May 28th, 2009 – Metris introduces a revolutionary high-power 450kV micro-focus X-ray/CT system for full insight inspection of turbine blades, castings and other dense objects. Its unique 450kV micro-focus source combined with the newly developed Curved Linear Array (CLA) detector maximizes the detection of X-ray flux resulting in industry-leading 25 micron accuracy and repeatability. Through automated inspection and high-speed CT reconstruction, blade manufacturers run detailed CT inspection of lightweight turbine blades to optimize the fuel economy of jet engines, contributing to a greener environment.
Powerful micro-focus source offers highest image resolution
At the core of this powerful equipment is a 450kV/1200W micro-focus source, the only micro-focus X-ray source at this energy, delivering 25 micron repeatability and accuracy! As this micro-focus spot size is considerably smaller than existing mini-focus sources, the level of detail that it captures is beyond comparison. Metris’ proprietary 450kV source offers sufficient X-ray power to penetrate dense specimens, such as turbine blades and casted engine parts.
To meet stricter tolerances on inner and outer wall thicknesses for latest- generation jet engine blades operating in extremely high temperatures, micro-focus X-ray and CT inspection is the ultimate solution. Single-crystal metal alloy turbine blades designed for optimum aerodynamics and mass center location, resist higher temperatures and avoid corrosion. Superior blade characteristics contribute to higher efficiencies in aircraft jet engines or in power plants, reducing fuel consumption and the discharge of greenhouse gases.
In order to reduce the through-life cost of the X-ray source, Metris uses open-tube source technology in its CT systems. With this open-tube technology, the replacement of the X-ray filament is straightforward and the cost of the filaments used compared to the costly exchange of an entire closed source tube every few years is low.
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Pin-point sharp and scatter-free images with new CLA detector
When X-rays hit an object, they are absorbed but also scattered, an undesired phenomena that aggravates with the density of the part. Scatter coming from all points of the part reduces image contrast sensitivity, as is visible on flat panel images. The newly developed detector featuring a Curved Linear Array (CLA) of diodes optimizes the collection of the X-rays that travel through the part without capturing the scattered X-rays. By avoiding image pollution and associated contrast reduction, CLA realizes stunning image sharpness and contrast.
The linear array of diodes is curved to further enhance image quality by keeping the X-ray path length to diode receptors constant compared to straight arrays. This allows longer crystals to be used to enhance the X-ray sensitivity and hence boost the signal-to-noise ratio. The XT H 450 manages X-ray data acquisition to generate a 2D slice of highest possible accuracy and in order to obtain a 3D volume, various slices are combined.
Supporting fast verification and in-depth engineering
With a maximum specimen diameter of 600mm and 500mm length, XT H 450 LC is a flexible X-ray/CT system that deals with small blades at high magnification, and also large blades and large castings. In a production environment, the shop floor friendly system runs automatic data acquisition and inspection based on blade type, generating pass/fail status for each inspected part. When taking radiographs of turbine blades, raw images and specific information items, such as blade profiles and inner and outer wall thicknesses, are stored in the database for traceability and further analysis.
The analysis software Focus Inspection supports feature and full part-to-CAD inspection and visualizes inspection results in easy-to-interpret, interactive graphics and reports. Engineers at leading turbine blade manufacturers use Focus Inspection for detailed off-line analysis that drives the engineering of next-generation blades.
Visit XT H 450 LC product page
About Metris
Contact
Renaat Van Cauter – marketing@metris.com – Tel +32 16 74 01 00 - +32 486 64 24 33
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