Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/108202
Title: Statistical analysis of fatigue crack propagation data of materials from ancient portuguese metallic bridges
Authors: Correia, J. A .F. O.
De Jesus, A. M. P.
Calcada, R.
Pedrosa, B. 
Rebelo, C. 
Silva, Luís Simões da 
Keywords: Fatigue Crack Growth; Strain Energy; Unigrow Model; Pressure Vessel Steel
Issue Date: 2017
Publisher: Gruppo Italiano Frattura
Project: FCT - postdoctoral Grant SFRH/BPD/107825/2015 
SciTech: Science and Technology for Competitive and Sustainable Industries, R&D project cofinanced by Programa Operacional Regional do Norte (NORTE2020), through Fundo Europeu de Desenvolvimento Regional (FEDER). 
Serial title, monograph or event: Frattura ed Integrita Strutturale
Volume: 11
Issue: 42
Abstract: Fatigue crack growth (FCG) rates have traditionally been formulated from fracture mechanics, whereas fatigue crack initiation has been empirically described using stress-life or strain-life methods. More recently, there has been efforts towards the use of the local stress-strain and similitude concepts to formulate fatigue crack growth rates. A new model has been developed which derives stress-life, strain-life and fatigue crack growth rates from strain energy density concepts. This new model has the advantage to predict an intrinsic stress ratio effect of the form σar=(σamp)γ·(σmax )(1-γ), which is dependent on the cyclic stress-strain behaviour of the material. This new fatigue crack propagation model was proposed by Huffman based on Walkerlike strain-life relation. This model is applied to FCG data available for the P355NL1 pressure vessel steel. A comparison of the experimental results and the Huffman crack propagation model is made.
URI: https://hdl.handle.net/10316/108202
ISSN: 19718993
DOI: 10.3221/IGF-ESIS.42.15
Rights: openAccess
Appears in Collections:I&D ISISE - Artigos em Revistas Internacionais

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