Mechanical performance of carbon-epoxy laminates. Part I: quasi-static and impact bending properties

Materials Research

José Ricardo Tarpani¹  Marcelo Tadeu Milan¹  Dirceu Spinelli¹  Waldek Wladimir Bose¹ 

[1] ,The University of São Paulo Engineering School of São Carlos Materials, Aeronautics and Automotive Engineering Department,Brazil

关键词: carbon-epoxy laminates;    composite materials;    mechanical properties;   

DOI  :  10.1590/S1516-14392006000200002

来源: SciELO

【 摘 要 】

In Part I of this study, quasi-static and impact bending properties of four aeronautical grade carbon-epoxy laminates have been determined and compared. Materials tested were unidirectional cross-ply (tape) and bidirectional woven textile (fabric) carbon fiber lay-up architectures, impregnated with standard and rubber-toughened resins, respectively, giving rise to 1.5 mm-thick laminates. Quasi-static mechanical properties assessed in transversal mode loading were modulus of elasticity, flexural strength and tenacity at the maximum load, whereas the net absorbed energy was determined under translaminar impact conditions. Two-dimensional woven carbon fiber reinforcements embedded in a rubber-toughened matrix presented the best mechanical performance under static loading. Under dynamic loading conditions, woven fiber fabric pre-forms were favorably sensitive to increasing impact energies regardless the nature of the employed epoxy resin. However, it was concluded that great care should be taken with this material within the low energy impact regimen.

【 授权许可】

CC BY   
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