Comparison of calibration functions for short edge cracks under selected loads

0479069 - ÚFM 2018 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Seitl, Stanislav - Miarka, Petr - Malíková, Lucie - Krejsa, M.
Comparison of calibration functions for short edge cracks under selected loads.
Advances in Fracture and Damage Mechanics XVI. Zurich: Trans Tech Publications Ltd, 2017 - (Mariano, P.; Baragetti, S.; Casavola, K.; Pappalettere, C.; Aliabadi, F.), s. 353-356. Key Engineering Materials, 754. ISBN 978-3-0357-1168-4. ISSN 1662-9795.
[FDM 2017 International Conference on Fracture and Damage Mechanics /16./. Florence (IT), 18.07.2017-20.07.2017]
Grant CEP: GA ČR GA17-01589S
Institucionální podpora: RVO:68081723
Klíčová slova: Calibration curve * Edge crack * Fracture mechanics * Paris-erdogan law * Stress intensity factors
Obor OECD: Audio engineering, reliability analysis

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.
Trvalý link: http://hdl.handle.net/11104/0275685