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Detection and CountermeasuresNon-acoustic and Non-magnetic Sub Detection

An Extensive X-ray Computed Tomography Evaluation of a Fully Penetrated Encapsulated SiC MMC Ballistic Panel

Authors: William H Green; Robert H Carter; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
 
Abstract: X-ray computed tomography (XCT) is an important nondestructive evaluation technique for revealing the spatial distribution of ballistically induced damage in ceramics. The level of detection and resolution of damage depends on the size of the sample and the parameters of the XCT approach (e.g., focal spot size, magnification, etc.). Previous and ongoing work in this area includes assessment of ballistically induced damage in both individual ceramic targets and ceramic armor panels. Ballistic damage in an encapsulated ceramic armor panel with a metal backing has been scanned and extensively evaluated using XCT two- and three-dimensional (3-D) analysis. The purpose of using XCT evaluation in this study was to better characterize and understand all of the detectable damage. This information can be used to correlate damage features and types with the physical processes of damage initiation and growth. XCT scans and analyses of damage in the panel will be shown and discussed. This will include virtual 3-D solid visualizations and some quantitative analysis of damage features.

Limitations: APPROVED FOR PUBLIC RELEASE
Description: Final rept. 1 Jan-30 Sep 2008
Pages: 20
Report Date: Apr-2009
Report Number: A935994
Keywords relating to this report:
*COMPUTERIZED TOMOGRAPHY
*NONDESTRUCTIVE TESTING
*SILICON CARBIDES
*SPATIAL DISTRIBUTION
*X RAYS
AMMUNITION DAMAGE
ARMOR PLATE
BALLISTICS
CERAMIC MATERIALS
COMPUTER APPLICATIONS
DAMAGE
DETECTION
ENCAPSULATION
METALS
PANELS
QUANTITATIVE ANALYSIS
TARGETS
THREE DIMENSIONAL
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