K-0915 FW-FRPリングの機械的特性の評価 : 試験片肉厚が評価特性に及ぼす影響(J05-1 FRP構造物物性)(J05 複合材料の加工と評価)

概要

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The effects of FW-FRP ring thickness on the strength, which was evaluated by simplified strength test methods, were investigated. The deformation of ring specimen was analyzed by using a finite element analysis. Two types of ring strength test, i.e. NOL ring tensile test and ring burst test were carried out in this study. As the results of strength tests, the fracture stress was decreased as increasing a thickness of specimen in NOL ring tensile test. On the other hand in ring burst test, the fracture stress was almost constant independently of thickness. It was confirmed by FE analysis that the degree of uniform deformation in FRP ring influences the above result. Although in a NOL ring tensile test the unbending stress concentrated at the edge of split disk, in ring burst test the hoop stress was uniform through the thickness.
2001-08-22