Engng.Fract.Mech. 66, 41-49, 2000


A NOTE ON A SIMPLE RECATEGORISATION OF CRACKS IN FATIGUE ANALYSIS

F.D. Fischer¹ and F.G. Rammerstorfer²

¹Institute of Mechanics,
University of Mining and Metallurgy, Leoben, Austria
²Institute of Lightweight Structures and Aerospace Engineering,
TU Wien, Vienna, Austria


Abstract - Two procedures for the fatigue analysis of elliptic and semi-elliptic cracks proposed in engineering guidelines are compared. The "original" procedure follows the growth of an acutal crack, the "simplified" one considers the growth of a recategorised strip (tunnel) crack. The conservativism of the "simplified" procedure is investigated in an extensive computer study.


(hjb,000911)