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https://hdl.handle.net/10316/108202
Título: | Statistical analysis of fatigue crack propagation data of materials from ancient portuguese metallic bridges | Autor: | Correia, J. A .F. O. De Jesus, A. M. P. Calcada, R. Pedrosa, B. Rebelo, C. Silva, Luís Simões da |
Palavras-chave: | Fatigue Crack Growth; Strain Energy; Unigrow Model; Pressure Vessel Steel | Data: | 2017 | Editora: | Gruppo Italiano Frattura | Projeto: | 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). |
Título da revista, periódico, livro ou evento: | Frattura ed Integrita Strutturale | Volume: | 11 | Número: | 42 | Resumo: | 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 | Direitos: | openAccess |
Aparece nas coleções: | I&D ISISE - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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Fatigue crack propagation prediction of a pressure vessel mild steel based on a strain energy density model.pdf | 359.22 kB | Adobe PDF | Ver/Abrir |
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