| Project/Area Number |
26820013
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Saitama University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 粘弾性力学 / クリープ試験 / 時間－温度換算則 / 高分子材料 / クリープ挙動 / 長期クリープ試験 / 線形粘弾性理論 / ポリプロピレン / 粘弾性 / 長期クリープ |
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| Outline of Final Research Achievements |
Long-term creep tests for over one year were carried out using Polypropylene. Moreover, short-term creep tests, constant strain rate tests and constant loading rate tests were carried out at various temperature. Creep compliance was calculated by using these short-term tests data, and to get master curves of creep compliance, the time-temperature superposition principle was applied to these data. Master curve of the short-term creep tests data were coincide with the long-term creep tests, and it was clear that the W.L.F. equation was suit on the polypropylene. On the results of the master curves from constant strain-rate and loading-rate tests, they were not coincide with the long-term creep tests. It was cleared that the reason of disagreement was the non-linear viscoelastic behavior of polypropylene.
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