Biaxial fatigue of metals

Schijve, J.

Biaxial fatigue of metals

The present understanding

Book (2015)

Authors

J. Schijve Structural Integrity & Composites - Aerospace Engineering

Research Group

Structural Integrity & Composites (Aerospace Engineering) (TU Delft)

Biaxial fatigue experiments Crack nucleation and growth Multiaxial fatigue load sequences Physical fatigue phenomenon Predictions on multiaxial fatigue

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Published Date

25-08-2015

Language

English

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Faculty

Aerospace Engineering

Department

Aerospace Structures & Materials

Research Group

Structural Integrity & Composites

Abstract

Problems of fatigue under multiaxial fatigue loads have been addressed in a very large number of research publications. The present publication is primarily a survey of biaxial fatigue under constant amplitude loading on metal specimens. It starts with the physical understanding of the fatigue phenomenon under biaxial fatigue loads. Various types of proportional and non-proportional biaxial fatigue loads and biaxial stress distributions in a material are specified. Attention is paid to the fatigue limit, crack nucleation, initial micro crack growth and subsequent macro-crack in different modes of crack growth. The interference between the upper and lower surfaces of a fatigue crack is discussed. Possibilities for predictions of biaxial fatigue properties are analysed with reference to the similarity concept. The significance of the present understanding for structural design problems is considered. The book is completed with a summary of major observations.