| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
Recently, instead of conventional metal, carbon fiber reinforced plastic (CFRP) composites are applied to the main structural members in the transport aircrafts. For example, 50% volume percent of the main body of Boeing 787 consists of CFRP. It is well known that the design approach of metal aircrafts cannot be applied to CFRP aircrafts because the damage and failure process of CFRP is quite unique owing to the hierarchical microstructure. However, in the real design, the strain criterion which is used in the design of metal aircrafts has been applied to the development of new transport aircrafts. This approach cannot cover with the several problems including edge delamination, impact damage, transverse cracks and micro damages seen in the CFRP structures. Based on these backgrounds, multiscale modeling which addresses plural damages and systematically organizes the models has been presented in this study.
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