Fatigue behaviour study on repaired aramid fiber/epoxy composites
Data de publicação2009-07-01
Direito de acesso
MetadadosExibir registro completo
Aramid fiber reinforced polymer composites have been used in a wide variety of applications, such as aerospace, marine, sporting equipment and in the defense sector, due to their outstanding properties at low density. The most widely adopted procedure to investigate the repair of composites has been by repairing damages simulated in composite specimens. This work presents the structural repair influence on tensile and fatigue properties of a typical aramid fiber/epoxy composite used in the aerospace industry. According to this work, the aramid/epoxy composites with and without repair present tensile strength values of 618 and 680MPa, respectively, and tensile modulus of 26.5 and 30.1 GPa, respectively. Therefore, the fatigue results show that in loads higher than 170 MPa, both composites present a low life cycle (lower than 200,000 cycles) and the repaired aramid/epoxy composite presented low fatigue resistance in low and high cycle when compared with non-repaired composite. With these results, it is possible to observe a decrease of the measured mechanical properties of the repaired composites.
Como citar este documento
Este item aparece nas seguintes coleções
Exibindo os itens relacionados pelo título, autor e palavra-chave.
Effects of electroplated zinc-nickel alloy coatings on the fatigue strength of AISI 4340 high strength steel Voorwald, H. J. C.; Miguel, I. M.; Costa, M. Y. P. (11th International Conference on Fracture 2005, ICF11, 2005) [Trabalho apresentado em evento]It is well known that fatigue behaviour is an important parameter to be considered in mechanical components subjected to constant and variable amplitude loadings. In combination with corrosion phenomenon, fatigue effects ...
Oliveira, Anderson de Souza Castelo ; Gonçalves, M. ; Cardozo, A. C. ; Barbosa, F. S S (Electromyography and Clinical Neurophysiology, 2005) [Artigo]The purpose of this study was to identify the Electromyographic Fatigue Threshold (EMG FT) of the biceps brachii muscle bilaterally during the elbow flexion in tests performed in different times: 30 second test, 1 minute ...
Nascimento, Marcelino P. ; Voorwald, Herman J.C. (Recent Patents on Mechanical Engineering, 2009) [Artigo]Standard Test Methods (e.g. ASTM, DIN) for materials characterization in general, and for fatigue in particular, do not contemplate specimens with complex geometries, as well as the combination of axial and in-plane bending ...