Establishment of fatigue life prediction method of the Ag-epoxy conductive adhesive
| Project/Area Number |
23560846
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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 |
Structural/Functional materials
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| Research Institution | Shibaura Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | マイクロ接合 / 低サイクル疲労 / 導電性接着剤 / 電子実装 / 接着剤 / 粘弾性 / 熱疲労 / 信頼性解析 |
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| Research Abstract |
In this study, a time-dependent static and cyclic mechanical behavior of Ag-epoxy conductive adhesive was investigated. The time-dependent static and cyclic mechanical behavior can be reproduced by the generalization Maxwell model which was determined by stress relaxation test. Furthermore, fatigue life of the Ag-epoxy conductive adhesive can be estimated by visco-elastic energy that is calculated by FEM analysis.
In addition, the anisotropic viscoelasticity of the Ag-epoxy conductive adhesive was investigated using computational material testing using micro-scale FEM model. Anisotropy appears in the viscoelasticity of the Ag-epoxy conductive adhesive under the influence of Ag filler orientation. The anisotropic viscoelasticity of the Ag-epoxy conductive adhesive is reproduced by the constitutive equation which combined an orthotropic elasticity and a generalization Maxwell model.
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Report
(4 results)
Research Products
(12 results)
