2010 Fiscal Year Final Research Report
A study on nonlinear ultrasonic testing using a new wave propagation simulation tool
| Project/Area Number |
21760352
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
|
|---|
| Research Institution | Tokyo Institute of Technology |
|---|
Principal Investigator |
SAITOH Takahiro Tokyo Institute of Technology, 大学院・情報理工学研究科, 助教 (00535114)
|
|---|
| Project Period (FY) |
2009 – 2010
|
| Keywords | 境界要素法 / 時間領域 / 超音波非破壊評価 / 非線形超音波法 |
|---|
| Research Abstract |
In this study, new time-domain boundary element method was developed for non-linear ultrasonic simulation. The use of the new time-domain BEM provided the stable transient solutions even for small time increments. Numerical results show that stick-separation and stick-slip contact states excite 2nd order harmonics and sub-harmonics, and 3rd order higher harmonics, respectively.
|
