• Journal of Ocean Engineering and Technology
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• v.14 no.2
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• pp.89-98
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• 2000

Using conventional textile techniques such as weaving braiding knitting and stitching it is possible to produce a wide range two and three dimensional fiber preforms, however so far only a limited attention has been given to knitted fabrics in composite industry. This is mainly due to the opinion that knitted fabric reinforced composites posses low mechanical properties owing to their looped fiber architecture. But it is possible to obtain desired mechanical properties by selecting proper knitted fabric structure, In this paper mechanical characteristics of kevlar plain weft knitted fabrics reinforced plastics(KFRP) are evaluated for th development of intrusion beam of car side door. Tensile bending impact properties of KFRP are measured experimentally and crush demands of Americal Federal Motor Vehicle Safety Standard No.214(FMVSS 214) compared with the bending load and displacement of KFRP by quasi-static test method. The applicability and limitation of bending load and displacement of KFRP according to specimen size has been discussed.

• Journal of Ocean Engineering and Technology
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• v.19 no.1 s.62
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• pp.57-63
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• 2005

The objective of this research is to investigate the mechanical characteristics of the hybrid fiber reinforced composite rebar, which is manufactured from a braidtrusion process. Braidtrusion is a direct composite fabrication technique, utilizing in-line brading and the pultrusion process. hz order to obtain the mechanical behavior of the glass fiber, carbon fiber, and kevlar fiber, the tensile tests are carried out. The results of the fibers are compared with that of steel. Hybrid rebar specimens with various diameters, ranging from model size (3 mm) to full-scale size (9.5 mm), and various cross sections, such as solid and hollow shape, have been manufactured from the braidtrusion process. The tensile and bending tests for the case of the hybrid rebar, the conventional GFRP rebar, and the steel bar have been carried out. The results of the experiments show that the hybrid rebar is superior to the conventional GFRP rebar and the steel bar, from the viewpoint of tensile and bending characteristics.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2005.04a
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• pp.575-582
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• 2005

Wind Turbines of big scale of modem stage are made of a part glass F.R.P. Carbon Reinforced Plastic and Kevlar can be used 0 reinforcement but those are not economical in big scale of Wind Turbines. In this study life sized 10kW-class Rotor Blade is made of F.R.P. which is high stiffness and good dynamic behavior characteristic for light weight. It is accomplished an experimental research of Bending analysis blade. Bending analysis blade are calculated with F.E. Analysis performed with commercial F.E.M program ANSYS. Finally, experimental research is compared with F.E. Analysis. The results indicate that experimental values have good agreements with the F.E. Analysis.