TY - GEN
T1 - Mechanical response anisotropy in hot-pressed silicon carbide
AU - Wereszczak, A. A.
AU - Vuono, D. J.
AU - Bortle, K. P.
AU - Ritt, P. J.
AU - Swab, J. J.
AU - Campbell, J.
PY - 2014
Y1 - 2014
N2 - Property anisotropy can exist in sintered ceramics and composites formed by pressure-assistance. Being that hot-pressed silicon carbide (SiC) is a utilized armor ceramic, and its fracture and damage multiaxially occurs in a ballistic impact, interest exists to measure the quasi-static mechanical (fracture and indentation) responses as a function of orientation to identify anisotropy. Flexure strength, fracture toughness, Knoop hardness, and spherical indentation were studied as a function of orientation with respect to the pressing axis in a 40-mm-thick hot-pressed SiC tile. Fracture was anisotropic (rather, transversely isotropic) but yield-like processes were isotropic. Flexure strength and fracture toughness were 23% and 10% lower, respectively, when the tensile loading direction was parallel to the hot-pressing axis. Hardness was isotropic and the responses from spherical indentation were different but inconclusive.
AB - Property anisotropy can exist in sintered ceramics and composites formed by pressure-assistance. Being that hot-pressed silicon carbide (SiC) is a utilized armor ceramic, and its fracture and damage multiaxially occurs in a ballistic impact, interest exists to measure the quasi-static mechanical (fracture and indentation) responses as a function of orientation to identify anisotropy. Flexure strength, fracture toughness, Knoop hardness, and spherical indentation were studied as a function of orientation with respect to the pressing axis in a 40-mm-thick hot-pressed SiC tile. Fracture was anisotropic (rather, transversely isotropic) but yield-like processes were isotropic. Flexure strength and fracture toughness were 23% and 10% lower, respectively, when the tensile loading direction was parallel to the hot-pressing axis. Hardness was isotropic and the responses from spherical indentation were different but inconclusive.
UR - http://www.scopus.com/inward/record.url?scp=84891766136&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84891766136
SN - 9781118807491
T3 - Ceramic Engineering and Science Proceedings
SP - 75
EP - 84
BT - Advances in Ceramic Armor IX - A Collection of Papers Presented at the 37th International Conference on Advanced Ceramics and Composites, ICACC 2013
T2 - Advances in Ceramic Armor IX - 37th International Conference on Advanced Ceramics and Composites, ICACC 2013
Y2 - 27 January 2013 through 1 February 2013
ER -