| Project/Area Number |
03650593
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
溶接工学
|
|---|
| Research Institution | HIMEJI INSTITUTE OF TECHNOLOGY |
|---|
Principal Investigator |
SEO Kenji Himeji Institute of Technology Dep. of Mech. Eng. Professor, 工学部, 教授 (70047603)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
KUSAKA Masahiro Himeji Institute of Technology Dep. of Mech. Eng. Assistant, 工学部, 助手 (40244686)
NOGATA Fumio Himeji Institute of Technology Dep. of Mech. Eng. ,Associate professor, 工学部, 助教授 (70047629)
|
|---|
| Project Period (FY) |
1991 – 1992
|
| Project Status |
Completed (Fiscal Year 1992)
|
| Budget Amount *help |
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1992: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1991: ¥1,400,000 (Direct Cost: ¥1,400,000)
|
|---|
| Keywords | ceramic / sprayed coating / thermal stress / thermal cycle test / J-integral / joint of dissimilar materials / BEM / BEM / 残留応力 / 熱応力 |
|---|
| Research Abstract |
The purpose of this study is to investigate the strength of the plasma sprayed alumina coating after thermal cycle test. A summary of the obtained results are as follows:
(1) An analysis connected with the thermal stress and strain during thermal spraying and thermal cycle test are performed usaing the theory of elasticity and a boundary element method. If the test specimen are composed of the substrate with thethickness being 4 times, and the length and the width being 8 times as large as a thickness of sprayed coating, the thermal stress during thermal cycle test are the same as that of sprayed substrate in working field.
(2) The thermal cycle test of plasma sprayed alumina coating which are deposited on the stainless substrate are carried out. The number of thermal cycle to failure of alumina coating are affected by the edge shape of coating.
(3) The effect of dominant parameters ( the difference of the coefficient of linear thermal expansion between the ceramic coating and the substrate, the ratio of Young s modulus of both materials) on the J integral after thermal cycle test are clarified by numerical simulation.
|
