2011 Fiscal Year Final Research Report
Study on Electric-Induced Damage in Piezoelectric Ceramics
| Project/Area Number |
21560105
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Materials/Mechanics of materials
|
|---|
| Research Institution | Kochi University of Technology |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2009 – 2011
|
| Keywords | 圧電セラミックス / 部分電極 / き裂進展 / 繰返し電界 / 環境 |
|---|
| 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.
|
