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Comparison of Calibration Functions for Short Edge Cracks under Selected Loads

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Abstract:

Attention to the fatigue cracks in steel structures and bridges has been paid for long time. In spite to efforts to eliminate the creation and propagation of fatigue cracks throughout the designed service life, cracks are still revealed during inspections. Note, that depending on location of initial crack, the crack may propagate from the edge or from the surface. The theoretical model of fatigue crack progression is based on linear fracture mechanics. Steel specimens are subjected to various load (tension, three-and four-point bending, pure bending etc.). The calibration functions for short edge cracks are compared for various load and the discrepancies are discussed.

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Periodical:

Key Engineering Materials (Volume 754)

Pages:

353-356

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.754.353

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Cite this paper

Online since:

September 2017

Authors:

Stanislav Seitl*, Petr Miarka, Lucie Malíková, Martin Krejsa

Keywords:

Calibration Curve, Edge Crack, Fracture Mechanics, Paris-Erdogan Law, Stress Intensity Factor

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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