Mechanical performance of carbon-epoxy laminates. Part II: quasi-static and fatigue tensile properties



Título del documento: Mechanical performance of carbon-epoxy laminates. Part II: quasi-static and fatigue tensile properties
Revista: Materials research
Base de datos: PERIÓDICA
Número de sistema: 000312888
ISSN: 1516-1439
Autores: 1


Instituciones: 1Universidade de Sao Paulo, Escola de Engenharia, Sao Carlos, Sao Paulo. Brasil
Año:
Periodo: Abr-Jun
Volumen: 9
Número: 2
Paginación: 121-130
País: Brasil
Idioma: Inglés
Tipo de documento: Nota breve o noticia
Enfoque: Experimental
Resumen en inglés In Part II of this work, quasi-static tensile properties of four aeronautical grade carbon-epoxy composite laminates, in both the as-received and pre-fatigued states, have been determined and compared. Quasi-static mechanical properties assessed were tensile strength and stiffness, tenacity (toughness) at the maximum load and for a 50% load drop-off. In general, as-molded unidirectional cross-ply carbon fiber (tape) reinforcements impregnated with either standard or rubber-toughened epoxy resin exhibited the maximum performance. The materials also displayed a significant tenacification (toughening) after exposed to cyclic loading, resulting from the increased stress (the so-called wear-in phenomenon) and/or strain at the maximum load capacity of the specimens. With no exceptions, two-dimensional woven textile (fabric) pre-forms fractured catastrophically under identical cyclic loading conditions imposed to the fiber tape architecture, thus preventing their residual properties from being determined
Disciplinas: Ingeniería
Palabras clave: Ingeniería de materiales,
Ingeniería mecánica,
Carbono/epoxi,
Láminas,
Aeronáutica,
Propiedades mecánicas,
Fatiga de materiales,
Resistencia
Keyword: Engineering,
Materials engineering,
Mechanical engineering,
Carbon/epoxy,
Laminates,
Aeronautics,
Mechanical properties,
Materials fatigue,
Resistance
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