| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
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| Outline of Final Research Achievements |
A continuous ramie single yarn reinforced polypropylene composite strand using a new and relatively simplified multi-pin-assisted resin impregnation process and the feeder for natural fiber strands were developed in this study. For the injection molded composite, tensile properties were measured. As the results, the drastically improvements in tensile strength were confirmed. The objective of this study is to clarify the reinforcing mechanism of bowing natural LFT composites. At first, the bowing natural fibers were classified in geometry. The bowing fibers exist near surface of the injected specimens. The difference of fiber geometry with GFRTP case was derived from the fracture strain of fibers. Then, many initial crack observations for bowing natural LFT composites using SEM were carried out, and the finite element analyses were conducted to investigate the fracture mechanism of fiber breakages, matrix crack and interfacial crack between fiber and matrix.
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