| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
We aim to develop an impact-reduction system by applying ultrasonic vibrations, which can change the rigidity of the material instantaneously in the event of an impact. This study was carried out to verify if the ultrasonic vibrations were applicable to some specimens such as a high-tensile steel plate and a carbon fiber-reinforced polymer (CFRP) plate which have been used in recent years to realize lightweight automobiles. When the ultrasonic vibrations were applied to the high-tensile steel plate, the impact force and the springback amount were reduced by up to 35% and 43%, respectively.
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