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Short crack growth based fatigue assessment of notched components under multiaxial variable ampli-tude loading

Hertel, Olaf and Vormwald, Michael (2011):
Short crack growth based fatigue assessment of notched components under multiaxial variable ampli-tude loading.
In: Engineering Fracture Mechanics, Elsevier, pp. 1614-1627, 78, [Article]

Abstract

A short crack model originally proposed for multiaxial constant amplitude loading is extended and applied to multiaxial variable amplitude loading. Load sequences have a significant influence on variable amplitude life; they are taken into account using algorithms originally proposed only for uniaxial loading. The estimated fatigue lives of unnotched tubular specimens and notched shafts under different in- and out-of-phase multiaxial constant and variable amplitude load histories are compared with the experimental results. The comparison reveals that the proposed short crack approach enables sufficiently accurate estimation. Moreover, the estimated critical planes, i.e., the planes of maximum crack growth rate or minimum life, are in good agreement with the experimental observations.

Item Type: Article
Erschienen: 2011
Creators: Hertel, Olaf and Vormwald, Michael
Title: Short crack growth based fatigue assessment of notched components under multiaxial variable ampli-tude loading
Language: English
Abstract:

A short crack model originally proposed for multiaxial constant amplitude loading is extended and applied to multiaxial variable amplitude loading. Load sequences have a significant influence on variable amplitude life; they are taken into account using algorithms originally proposed only for uniaxial loading. The estimated fatigue lives of unnotched tubular specimens and notched shafts under different in- and out-of-phase multiaxial constant and variable amplitude load histories are compared with the experimental results. The comparison reveals that the proposed short crack approach enables sufficiently accurate estimation. Moreover, the estimated critical planes, i.e., the planes of maximum crack growth rate or minimum life, are in good agreement with the experimental observations.

Journal or Publication Title: Engineering Fracture Mechanics
Volume: 78
Publisher: Elsevier
Uncontrolled Keywords: Multiaxial fatigue Variable amplitude loading Notch Cyclic plasticity Short crack
Divisions: 13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics > Fachgebiet Werkstoffmechanik
13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics
13 Department of Civil and Environmental Engineering Sciences
Date Deposited: 27 Jan 2015 15:01
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