2015 Fiscal Year Final Research Report
Development of rotary pressing for ball-chain type MHS and mechanical property test of the structure
| Project/Area Number |
25420056
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Production engineering/Processing studies
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| Research Institution | Kagawa University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Keywords | ポーラス金属 / 中空金属球 / 固化成形体 / 圧縮特性 / 曲げ特性 |
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| Outline of Final Research Achievements |
In order to reduce weight of cars and improve the rigidity and the collision safety, as a material technique, a new ultra-light porous metal has been developed. The conventional porous metals like foamed aluminum or metallic hollow sphere (MHS) structure have some problems on the process cost, homogeneity and controllability of material and tensile and bending strength. So, we proposed a ball-chain type MHS structure to solve them. Since the hollow spheres used in this structure are precisely and inexpensively mass-produced by metal sheet forming using a punch and die, the structure is very homogenous and the production cost is lower. By changing the dimensions of a punch and a die and metal sheet thickness, size of hollow spheres can be easily changed to be able to control the performance widely. The spheres are point-connected in the conventional MHS structure, while the proposed spheres are strongly connected by a wide bridge and the tensile and bending strengths are also high.
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| Free Research Field |
塑性加工
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