Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10316/36795
Título: | Effects of external patch configuration on repaired composite laminates subjected to multi-impacts | Autor: | Coelho, S. R. M. Reis, P. N. B. Ferreira, J. A. M. Pereira, A. M. |
Palavras-chave: | Composite structure; Bonded composite repair; External patch repair; Impact tests | Data: | 2017 | Editora: | Elsevier | Título da revista, periódico, livro ou evento: | Composite Structures | Resumo: | This work intends to study the impact performance of repaired composites by the overlap patch technique and, for this purpose, experimental tests were carried out on single and double-patch specimens. In order to evaluate the impact fatigue strength, both configurations were submitted to multi-impacts, until the full perforation occurs. It was possible to conclude that the double-patch geometry supports higher maximum loads, lower displacements and promotes higher elastic energies. Relatively to the impact energy of 6 J, for example, the maximum load and the elastic energy is 97.1% and 51.2% higher, respectively, but the maximum displacement is about 50% lower than the values obtained with the single-patch geometry. Higher impact fatigue life was also observed, as consequence of its higher stiffness. The impact bending stiffness confirms the difference of stiffness between them, and shows to be a parameter able to monitor the damage progression. | URI: | https://hdl.handle.net/10316/36795 | ISSN: | 0263-8223 | DOI: | 10.1016/j.compstruct.2017.02.069 10.1016/j.compstruct.2017.02.069 |
Direitos: | openAccess |
Aparece nas coleções: | FCTUC Eng.Electrotécnica - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Effect of distance between impact point and hole position on the impact fatigue.pdf | 1.03 MB | Adobe PDF | Ver/Abrir |
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