Study on Electric-Induced Damage in Piezoelectric Ceramics
| Project/Area Number |
21560105
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Kochi University of Technology |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 圧電セラミックス / 部分電極 / き裂進展 / 繰返し電界 / 環境 / PZT / 正弦波電界 / 面外せん断モード / 応力拡大係数 / 有限要素法 / 接触解析 / 繰返し電界負荷 / 微小き裂伝ぱ / き裂伝ぱ速度 / 分極反転 / 圧電定数 / 静電容量 |
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| Research Abstract |
Small crack growth behavior in poled lead zirconate titanate was investigated under cyclic electric loadings. The crack located at partial electrode edge grew along the boundary of electrode during the loading. The crack growth rate decreased with increasing crack length and non-propagating crack was reached. The growth rate and crack length of non-propagating crack were affected by amplitude of the electric loadings and environmental temperature and humidity.
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Report
(4 results)
Research Products
(8 results)
