| Budget Amount *help |
¥42,250,000 (Direct Cost: ¥32,500,000、Indirect Cost: ¥9,750,000)
Fiscal Year 2012: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Fiscal Year 2011: ¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2010: ¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
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| Research Abstract |
Prevention of brittle fracture in large-scale sea transportation structures, such as mega-container ships, has been an urgent task because heavy-section steel plates are used in these structures. In the present study, experimental as well as numerical analyses were made for fast propagating brittle cracks. Reason to the discrepancy of the brittle crack propagation and arrest behaviors with crack length was clarified. Also, a numerical model was developed for analyzing crack propagation behaviors in welds with material and stress heterogeneities. These results are expected to contribute to the technology development for preventing and controlling brittle crack propagation in ship structures.
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