TY - JOUR
T1 - Fracture toughness of SIC, Si3N4, and sialon ceramics using controlled surface flaws
AU - Cook, S.G.
AU - King, J.E.
AU - Little, J.A.
PY - 1996/4
Y1 - 1996/4
N2 - Knoop and Vickers indentation cracks have frequently been used as model 'precracks' in ceramic bend specimens for fracture toughness (K1c) determination. Indentation residual stress reduces the measured K1c but can be removed or accounted for by grinding, annealing, or modelling. Values of K1c are obtained for four materials using Vickers indentations and an improved stress intensity factor. Methods for residual stress removal or incorporation are compared, and the most reliable stress removal alternative is identified for each material. © 1996 The Institute of Materials.
AB - Knoop and Vickers indentation cracks have frequently been used as model 'precracks' in ceramic bend specimens for fracture toughness (K1c) determination. Indentation residual stress reduces the measured K1c but can be removed or accounted for by grinding, annealing, or modelling. Values of K1c are obtained for four materials using Vickers indentations and an improved stress intensity factor. Methods for residual stress removal or incorporation are compared, and the most reliable stress removal alternative is identified for each material. © 1996 The Institute of Materials.
UR - http://www.scopus.com/inward/record.url?scp=0141913699&partnerID=8YFLogxK
UR - https://www.tandfonline.com/doi/abs/10.1179/mst.1996.12.4.366
U2 - 10.1179/mst.1996.12.4.366
DO - 10.1179/mst.1996.12.4.366
M3 - Article
SN - 0267-0836
VL - 12
SP - 366
EP - 370
JO - Materials Science and Technology
JF - Materials Science and Technology
IS - 4
ER -