| Project/Area Number |
06650763
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | The University of Tokushima |
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Principal Investigator |
HANABUSA Takao The University of Tokushima, Faculty of Engineering Professor, 工学部, 教授 (20035637)
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| Project Period (FY) |
1994 – 1995
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| Project Status |
Completed (Fiscal Year 1995)
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| Budget Amount *help |
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1995: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1994: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | Spray coating / Laser spraying / Plasma spraying / FGM / Laminated layr / Residual stress / Thermal stress / X-ray stress measurement / レーザ溶射 / X線応力測定 / 熱衝撃疲労 |
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| Research Abstract |
The present study investigated a stress state in the layr coated by plasma-spraying and laser-spraying. Aluminum and stainless steel layrs and TiN layr were prepared by laser spraying. Functionally-gradient-layr of NiAl and Al_2O_3 was prepared by prasma spraying. Residual stresses and thermal stresses were measured by the X-ray stress measuring method. The subjects which were investigated are as follows :
1. Residual stresses after annealing of the metal layrs
2. Residual stresses developed by grainding of Al_2O_3 layr and NiAl/Al_2O_3 composite layr
3. In-situ thermal stresses developed by loadings on Al_2O_3 layr and NiAl/Al_2O_3 composite layr
4. Residual stresses developed in the TiN layr after thermal shock by laser-beam irradiation
Finite element method revealed that microstructure in the layr should be careflly considered in order to calculate stress state in the spray-coating layr.
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