Application of a Miniaturized Portable Microwave Interference Scanning System for Nondestructive Testing of Composite Ceramic Armor

Schmidt, Karl F.; Little, Jack; Ellingson, W. A.; Franks, Lisa Prokurat; Meitzler, Thomas; Green, W.

doi:10.1002/9781118095256.ch15

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…The ballistic performance of multilayer composite ceramic armor can be compromised by defects present from manufacturing or by operational damage resulting from handling or impact with objects in the environment as well as projectiles [1][2][3][4][5][6][7]. In order to provide a depot level nondestructive inspection (NDI) system that can monitor the condition of the armor, a portable version of an automated microwave-based NDI system has been developed, optimized, and further miniaturized to be suitable for on-vehicle inspection in depot facilities.…”

Section: Portable Automated Imaging In Complex Ceramics With a Microwmentioning

confidence: 99%

Portable automated imaging in complex ceramics with a microwave interference scanning system

Goitia¹,

Schmidt²,

Little³

et al. 2013

AIP Conference Proceedings

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Articles you may be interested inCorrelation of scanning microwave interferometry and digital X-ray images for damage detection in ceramic composite armor AIP Conf.ABSTRACT. An improved portable microwave interferometry system has been automated to permit rapid examination of components with minimal operator attendance. Functionalities include stereo and multiplexed, frequency-modulated at multiple frequencies, producing layered volumetric images of complex ceramic structures. The technique has been used to image composite ceramic armor and ceramic matrix composite components, as well as other complex dielectric materials. The system utilizes EvisiveScan microwave interference scanning technique. Validation tests include artificial and in-service damage of ceramic armor, surrogates and ceramic matrix composite samples. Validation techniques include micro-focus x-ray and computed tomography imaging. The microwave interference scanning technique has demonstrated detection of cracks, interior laminar features and variations in material properties such as density. The image yields depth information through phase angle manipulation, and shows extent of feature and relative dielectric property information. It requires access to only one surface, and no coupling medium. Data are not affected by separation of layers of dielectric material, such as outer over-wrap.

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Section: Portable Automated Imaging In Complex Ceramics With a Microwmentioning

confidence: 99%

Portable automated imaging in complex ceramics with a microwave interference scanning system

Goitia¹,

Schmidt²,

Little³

et al. 2013

AIP Conference Proceedings

View full text Add to dashboard Cite

show abstract

“…The ballistic performance of multilayer composite ceramic armor can be degraded by defects present from production or by operational damage resulting from handling or impact with objects in the environment as well as projectiles [1][2][3][4][5][6][7]. In order to provide a depot level nondestructive inspection (NDI) system that can monitor the condition of the armor, a semi-portable version of an automated microwave-based NDI system has been developed, optimized, and further miniaturized to be suitable for on-vehicle inspection in depot facilities.…”

Section: Introductionmentioning

confidence: 99%

Correlation of scanning microwave interferometry and digital X-ray images for damage detection in ceramic composite armor

Schmidt¹,

Goitia²,

Ellingson³

et al. 2012

AIP Conference Proceedings

View full text Add to dashboard Cite

Articles you may be interested in Correlation of scanning microwave interferometry and digital X-ray images for damage detection in ceramic composite armor AIP Conf. Abstract. The high sensitivity provided by x-ray grating interferometry is one of the distinct characteristics of this phase contrast imaging technique. Up to now, several contributions to the uncertainty of the determined phase signal are known, which can be addressed by adapting total acquisition time or improving the mechanics of the experimental setup. Here, we demonstrate the occurrence of an additional systematic error, which is intrinsic to the physics of the contrast formation process. Based on a recently established scattering-based description of grating interferometry, we demonstrate analytically that asymmetric scattering distributions lead to a systematic error in the determined phase signal.

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Application of a Miniaturized Portable Microwave Interference Scanning System for Nondestructive Testing of Composite Ceramic Armor

Cited by 2 publications

References 2 publications

Portable automated imaging in complex ceramics with a microwave interference scanning system

Portable automated imaging in complex ceramics with a microwave interference scanning system

Correlation of scanning microwave interferometry and digital X-ray images for damage detection in ceramic composite armor

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