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A Military Application of CMOS Digital
ASNT FALL CONFERENCE 2006 A Military Application of CMOS Digital X-ray for High-Energy, High-Resolution and VERY LARGE Format John Pursley Envision Product Design LLC
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Acknowledgements John P. Cope US ARMY REDSTONE ARSENAL L&W RESEARCH
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13 Year’s of Innovations in Digital X-Ray Imaging
1993 Image Intensifier with vidicon MCP & cooled CCD imager Amorphous silicon panel 2000 CMOS flat panel 2001 CMOS linear array CMOS scanners 2003 Real-time CMOS 2004 High-energy CMOS 2006 No Parallax CMOS Panel
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Redstone Arsenal Requirements
High Energy Digital X-ray Imaging System Capable of handling and inspecting test items up to 16,000 pounds and up to 20 feet in length High output X-ray generator capable of adequate flux for imaging through 54” of solid propellant Capable of producing images with a spatial resolution of 80 microns
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Variety of Test Items AMRAAM PAC 3 THAAD PATRIOT ATACMS POLARIS
Stage 2 7” dia 13’ long 350 # 10” dia 17’ long 700 # 13” dia 20’ long 2000 # 16” dia 17’ long 2000 # 24” dia 13’ long 3700 # 54” dia 8’ long 9400 #
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X-ray Options X-ray film Image Intensifier (CCD)
Linear diode array (LDA) Storage-phosphor plate (CR) aSi Flat panel (DR) CMOS linear array (DR) CMOS flat panel (DR)
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CMOS Linear Array Characteristics for Rocket Inspection Project:
Unlimited image format Performance at 9 Mv High spatial resolution – 80 micron Slot collimated for scatter rejection Out-of-the-beam detector = long service life
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An Example of CMOS Service Life
2,500,000 large parts inspected at 350kv 14ma Over 10,000 hours of X-ray ON time
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Large Format, High Resolution, High Energy and No Parallax
3 “ to 5” carbon steel 15” x 96” object shot at 6 MV
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System Components 9 MV Linear Accelerator
36” CMOS Special High Energy Array Rotating Precision Motion Stage for Array Moving Platforms for Accelerator & Array Rocket Handling System Rotating Belts that conform to item size Lifting Stands with precision movement Imaging & Control Workstation
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9 MV Linear Accelerator
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36” CMOS High Energy Array
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Rotating Precision Motion Stage for CMOS Array
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Platforms for Linear Accelerator & Imaging System Skids moveable to change distance between source, object and detector
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Rocket Handling System Rotating Belts & Lifting Stands Stands moveable to accommodate rocket length and obstacles such as fins
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Synchronized Scanning Vertical CMOS array and fan beam collimation
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Tangential Scanning in 36” increments Horizontal CMOS linear array and fan beam collimation
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Imaging & Control Workstation
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Conclusions CMOS linear array technology provides Large Format and High Energy digital x-ray imaging in real-time. Material handling systems can be integrated to accommodate items in a broad range of sizes and weights. High spatial and contrast resolution meet the most demanding image quality requirements in some cases down to 1/1T. Lack of parallax in the digital image allows accurate dimensional measurements and simplifies the application of automatic defect recognition (ADR) software. Out-of-the-beam detector geometry extends detector life up to 20,000 hours service life, greatly reducing the total cost of ownership for the Q/A inspection system which then contributes to U.S. manufacturing competitiveness.
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Also... some cool Alaska links!
Visit our web site for pictures, specifications, and sample images from CMOS systems. Also... some cool Alaska links!
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