Int.J.Fract. 73, 345-357, 1995
F.D. Fischer¹, O. Kolednik², G.X. Shan¹ and F.G. Rammerstorfer³
¹Institute of Mechanics,
University for Mining and Metallurgy, Leoben, Austria
²Erich Schmid-Institute for Solid State Physics of the Austrian Academy of Sciences,
³Institute of Lightweight Structures and Aerospace Engineering,
TU Wien, Vienna, Austria
After a review of the literature on the prognosis of ductile failure, a
damage indicator is developed which is based on micromechnanical results
and adapted to experiments.
A calibration of this damage indicator is possible by inspecting in detail
a load displacement curve for a long and smooth specimen.
Relation to currently published damage indicators is discussed.
The damage indicators can be used to indicate the onset of a local crack
in a ductile structure.