| Budget Amount *help |
¥27,690,000 (Direct Cost: ¥21,300,000、Indirect Cost: ¥6,390,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2014: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2013: ¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
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| Outline of Final Research Achievements |
In the present study, the interfacial adhesion strength between coating film and interface fracture toughness between coating film and substrate were evaluated by laser ultrasonic waves and boundary element method.
The adhesion strength can be estimated by inverse analyses using transfer function from the history of displacement of the specimen and boundary element analysis for unsteady 3-dimensional vibration. In the present study, an alternative boundary element program has been made for the axisymmetric solid body. Using data processing by Weibull distribution, the interfacial strength between Ti coating film and Al-alloy substrate could be confirmed to be 59.2MPa from the present investigation.
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