TENSILE PROPERTIES OF PAN-AND PITCH-BASED HYBRID CARBON FIBER REINFORCED EPOXY MATRIX COMPOSITES

摘要

Fiber reinforced polymer matrix composites (FRP) have become a dominant material in the aerospace, automotive and sporting goods industries [1]. Some of these FRP are useful, however, only in highly specialized situations where limitations such as brittle fracture behavior are considered. By mixing two or more types of fiber in a common matrix to form a hybrid FRP it may be possible to create a material possessing the combined advantages of the individual FRP [2]. There had been a number of papers written on the advantages and applications of hybrid FRP around 1980 [2-4]. In 1972, Hayashi et al [4] has showed the tensile properties of carbon/glass fibers hybrid FRP and proposed a hybrid FRP design method based on the rule of mixtures. For experimental results, the fracture strength and failure strain were higher than those of carbon fiber reinforced polymer matrix composites (CFRP). Short et al [5,6], Hardaker et al [7], Chou et al [8] reviewed the hybrid FRP. However, carbon/glass, carbon/aramid fibers were mainly used in previous investigation. This interest stems from a brief that a more costeffective utilization of more expensive fiber may result if it is used in hybrid form [9].