NDT Characterization of Boron Carbide for Ballistic Applications

Liaptsis, Dimosthenis; Cooper, Ian; Ludford, Nicholas; Gunner, A.; Williams, M.; Willis, David J.

doi:10.1063/1.3592044

Cited by 3 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Attempts have been made by several authors to estimate bulk density values of ceramic components. Limited work has been carried out in showing the local density variation across an entire ceramic component, especially in reaction‐formed sintered SiC ceramics.…”

Section: Introductionmentioning

confidence: 99%

“…Several nondestructive testing methods have been studied for measuring density variations in sintered ceramics. These methods include ultrasonic, radiographic, and scanning acoustic microscopy.…”

Section: Introductionmentioning

confidence: 99%

“…The literature includes reports comparing these methods and has proposed that radiographic testing was proven not to be as good as ultrasonic testing. Further, radiographic testing was also proven not to be sensitive to density variations, whereas ultrasonic techniques were able to determine sensitive density variations …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Determination of Density Variation and Microstructure in Reaction‐sintered SiC Ceramics Using Ultrasonic Time‐of‐Flight

Kesharaju

Nagarajah

2013

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Ultrasonic time‐of‐flight (TOF) is investigated as a predictor of density variation across reaction‐sintered silicon carbide (SiC) ceramics. The importance of this research is heightened by the fact that the reaction‐sintered SiC ceramic tiles being investigated are manufactured using the reaction sintering process that involves the infusion of liquid silicon into a porous ceramic preform. This can potentially lead to the formation of islands of free silicon, small closed areas of un‐sintered silicon material as well as conventional porosity. All these defects can result in local variations of density which cannot be detected by conventional bulk density measurement techniques. To study the microstructural differences, the porosity dependence of ultrasonic TOF of the reflected signals was investigated to establish a correlation between the velocity and density across the ceramic tile that aids in characterizing the material. The data suggest that for these ceramic tiles, TOF C‐scan mapping surfs as a much better indicator of sample homogeneity than the amplitude of the back wall echo. At the current time, ceramic tiles are inspected offline and this takes time and effort and is very expensive. In particular, this study contains the procedure followed to establish a quantitative method to quantify density variation across selected ceramic tile.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%