Accession Number:

ADA505772

Title:

Nondestructive Evaluation (NDE) of Sintered Silicon Carbide and its Correlation to Microstructure and Mechanical Properties

Descriptive Note:

Conference paper

Corporate Author:

RUTGERS - THE STATE UNIV PISCATAWAY NJ

Personal Author(s):

• Slusark, Douglas M.
• Demirbas, M. V.
• Portune, Andrew
• Miller, Steven
• Haber, Richard A.
• Brennan, Raymond
• Green, William
• Chin, Ernest
• Campbell, James

Report Date:

2008-12-01

Pagination or Media Count:

9.0

Abstract:

High density is a critical acceptance criterion for armor ceramics. Quantifying the difference in density between what would be considered to be a good or bad region is complicated. As density is reduced from theoretical, does this infer the presence of defects The minimum acceptable density that ensures favorable ballistic performance is unknown. This question concerns not only the presence of defective regions, which may include pores or inclusions, but also the spatial distribution of the defect within the sample. This study will seek to expand upon correlating the microstructural assessment, mechanical properties, and non-destructive evaluation results of ceramic armor tiles. This study will present the techniques necessary for microstructural analysis, which include nearest-neighbor distance distributions, tessellation analysis, average pore size, and pore size distributions. The ability of Knoop indentation and 4-pt flexure tests, combined with the results of ultrasound C-scans, to reliably predict ballistic performance of armor ceramics will be evaluated.

Descriptors:

• *SILICON CARBIDES
• *NONDESTRUCTIVE TESTING
• *MICROSTRUCTURE
• *CERAMIC MATERIALS
• SINTERING
• CORRELATION
• HIGH DENSITY
• MECHANICAL PROPERTIES
• SPATIAL DISTRIBUTION
• ARMOR
• TEST AND EVALUATION
• SYMPOSIA

Subject Categories:

• Inorganic Chemistry
• Ceramics, Refractories and Glass
• Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE