Int.J.Fract. 73, 345-357, 1995


A NOTE ON CALIBRATION OF
DUCTILE FAILURE DAMAGE INDICATORS

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,
Leoben, Austria
³Institute of Lightweight Structures and Aerospace Engineering,
TU Wien, Vienna, Austria


Abstract - 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.


(hjb,960628)