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High Energy Computed Tomographic Inspection of Munitions

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Technical Report

Corporate Author:

ARDEC, ESIC, RDAR-EIQ-SD Picatinny Arsenal United States

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This work is presented to show the progress in equipment developments made over the last several years on a specialized computed tomography CT inspection system specifically built for the U.S. Army Armament Research, Development and Engineering Center, Picatinny Arsenal, NJ. This compilation provides brief overviews of the hardware design, some of the digital processing functions that are exclusive to the developer, and how this inspection is directly applied to inspecting munitions and weapon systems. In many cases, the use of CT is overlooked or discounted due to its lack of use in high throughput production settings because of the time it takes to acquire adequate data sets and reconstructions. This report will show the added benefits of using CT as a supplemental inspection on sampling, providing greater knowledge of what may be causing suspect indications during the assembly or manufacturing process, and achieving more accurate results when determining the cause of a product failure during testing. Although the acquisition and review of the data takes longer than standard two-dimensional radiographs in one or more planes, the increased probability of detection is significant enough to mean the difference between finding the cause of a defectcondition or not. It also can provide valuable feedback during the development and early manufacturing of an item by giving additional perspective on part placement, alignment, and location of specific criteria of the inspection piece that cannot otherwise be accomplished by other nondestructive testing methods.

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