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https://hdl.handle.net/10316/101297
Título: | Minimal Invasive Diagnostic Capabilities and Effectiveness of CFRP-Patches Repairs in Long-Term Operated Metals | Autor: | Lesiuk, Grzegorz Pedrosa, Bruno A. S. Zięty, Anna Błażejewski, Wojciech Correia, Jose A. F. O. De Jesus, Abilio M. P. Fragassa, Cristiano |
Palavras-chave: | extended finite element method (xFEM); polarization curve; long-term operated metals; hybrid materials; fatigue crack growth; stress intensity factors (SIF) | Data: | 2020 | Projeto: | Polish National Agency for Academic Exchange grant number PPN/BUA/2019/1/00086 | Título da revista, periódico, livro ou evento: | Metals | Volume: | 10 | Número: | 7 | Resumo: | The paper deals with the subject of diagnostics and the quick repairs of long-term operated metallic materials. Special attention was paid to historical materials, where the structure (e.g., puddle iron) is di erent from modern structural steels. In such materials, the processes of microstructural degradation occur as a result of several decades of exposure, which could overpass 100 years. In some cases, their intensity can be potentially catastrophic. For this reason, the search for minimally invasive diagnostic methods is ongoing. In this paper, corrosion and fracture toughness tests were conducted, and the results of these studies were presented for two material states: post-operated and normalized (as a state “restoring” virgin state). Moreover, through the use of modern numerical methods, composite crack-resistant patches have been designed to reduce the stress intensity factors under cyclic loads. As a result, fatigue lifetime was extended (propagation phase) by more than 300%. | URI: | https://hdl.handle.net/10316/101297 | ISSN: | 2075-4701 | DOI: | 10.3390/met10070984 | Direitos: | openAccess |
Aparece nas coleções: | I&D ISISE - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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Minimal-invasive-diagnostic-capabilities-and-effectiveness-of-cfrppatches-repairs-in-longterm-operated-metalsMetals.pdf | 7.29 MB | Adobe PDF | Ver/Abrir |
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