| Budget Amount *help |
¥40,040,000 (Direct Cost: ¥30,800,000、Indirect Cost: ¥9,240,000)
Fiscal Year 2017: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
Fiscal Year 2016: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2015: ¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
Fiscal Year 2014: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Outline of Final Research Achievements |
The objective of the present research is to produce innovative network structures with size effect and nonlocality with keeping the higher specific strength. To realize the structures, the framework structure consisting of beams is the best candidate. The research has been performed from the two kinds of representative sizes; one is the millimeter-sized model. The original framework structure was manufactured by 3D-printer and it is found that the structure shows the predicted negative Poisson ratio. Also, this model has the micrometer-level characteristic length which indicates how large the nonlocality is potentially equipped in the model. The other is micrometer-sized pillar on the surface of materials which was manufactured by focused ion beam. The compressive loading using nanoindentation shows the clear size effect on the yield points and it suggests that the introduction of phase boundary can drastically change the deformability of structures.
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