| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Research Abstract |
The impact indentation hardness of several metallic materials is determined in the standard split Hopkinson pressure bar. Steel, titanium alloy, pure titanium and three different aluminum alloys are tested at room temperature. Cylindrical specimens are used in the Hopkinson bar tests and the static tests. The static indentation hardness is measured with an Instron testing machine. The effect of loading rate on the indentation hardness is investigated. It is shown that the indentation hardness is independent of loading rate for all aluminum alloys. It is also shown that the indentation hardness increases with increasing loading rate for steel, titanium alloy and pure titanium.
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