TY - GEN
T1 - The misconception(s) of ASTM E399, plane-strain fracture toughness KIC
AU - Wallin, Kim
PY - 2004
Y1 - 2004
N2 - The plane-strain fracture toughness, is assumed to
represent a size insensitive lower bound value. The
materials used for the development of ASTM E 399 were all
aluminum and titanium alloys or extra high strength
steels. The materials had in common that their fracture
micro-mechanism was ductile fracture. The fracture
toughness did not show the expected decreasing trend with
increasing specimen size, but generally the opposite
trend. The specimen thickness was assumed to be the
limiting dimension, even though the experimental data
indicated that the specimen ligament size controlled the
fracture toughness. This lead to several misconceptions
regarding the significance of KIC.
AB - The plane-strain fracture toughness, is assumed to
represent a size insensitive lower bound value. The
materials used for the development of ASTM E 399 were all
aluminum and titanium alloys or extra high strength
steels. The materials had in common that their fracture
micro-mechanism was ductile fracture. The fracture
toughness did not show the expected decreasing trend with
increasing specimen size, but generally the opposite
trend. The specimen thickness was assumed to be the
limiting dimension, even though the experimental data
indicated that the specimen ligament size controlled the
fracture toughness. This lead to several misconceptions
regarding the significance of KIC.
M3 - Conference article in proceedings
SN - 951-38-6293-3
T3 - VTT Symposium
SP - 379
EP - 392
BT - BALTICA VI - Life management and maintenance for power plants. Vol. 2
PB - VTT Technical Research Centre of Finland
CY - Espoo
T2 - BALTICA VI - Life Management and Maintenance for Power Plants
Y2 - 8 June 2004 through 10 June 2004
ER -