Hygrothermal effects on the tensile strength of carbon/epoxy laminates with molded edges



Título del documento: Hygrothermal effects on the tensile strength of carbon/epoxy laminates with molded edges
Revista: Materials research
Base de datos: PERIÓDICA
Número de sistema: 000312454
ISSN: 1516-1439
Autores: 1
2
Instituciones: 1Instituto Tecnologico de Aeronautica, Divisao de Engenharia Mecanica-Aeronautica, Sao Jose dos Campos, Sao Paulo. Brasil
2Instituto de Aeronautica e Espaco, Divisao de Materiais, Sao Jose dos Campos, Sao Paulo. Brasil
Año:
Periodo: Abr
Volumen: 3
Número: 2
Paginación: 11-17
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental
Resumen en inglés The interlaminar stresses are confined to a region near the free edge. Therefore, the laminate stacking sequence and the free edge finishing are some of the factors that affect the strength of the laminate and limit its life. The use of molded edges eliminates the need for trimming and machining the laminates edges thus improving productivity. However, this fabrication technique may have a detrimental effect on the laminate strength for certain stacking sequences. This effect in the presence of moisture has not been characterized. This work presents the results of a comparative study of the resistance to delamination of laminates with machined edges and molded edges. Additionally, two environmental conditions were considered: dry laminates and laminates saturated with moisture. The tensile strength of the laminates were measured and micrographs were used to analyze the microstructure of the laminates near the free edges. It is concluded that the mechanical properties of advanced composites depend on the environmental conditions and the fabrication techniques used to produce the laminates. Therefore, it is necessary to account for these factors when experimentally determining the design allowables
Disciplinas: Ingeniería
Palabras clave: Ingeniería de materiales,
Materiales compuestos,
Laminados,
Propiedades mecánicas,
Bordes
Keyword: Engineering,
Materials engineering,
Composite materials,
Laminates,
Mechanical properties,
Borders
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