Impact attenuation characterization of space structure material in impact acceleration including a high frequency band

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K21239
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Aerospace engineering; Materials/Mechanics of materials
• Research Institution: Kumamoto University
• Principal Investigator: HATA Hidehiro 熊本大学, 大学院先端科学研究部(工), 助教 (30381007)
• Research Collaborator: WATANABE Naoto ; ISHIBASHIRI Sayaka ; TOMITA Honoka
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 衝撃試験 / 高周波帯域 / 衝撃応答スペクトル / レーザー干渉振動計 / ロケット / 人工衛星

Outline of Final Research Achievements

In order to investigate the phenomenon that the impact acceleration including the damped vibration in the high frequency band attenuates in the material and the joint part, the impact test using the spring type impact test apparatus was carried out. Impact test was carried out on the plate structure, and a measurement method in the laser interference vibrometer was established. Impact test was carried out on the plate structure and the distance attenuation was examined. The effect of mode vibration was observed, and it was confirmed that the distance attenuation at each frequency was not clearly seen. In the cylindrical structure, attenuation model could be obtained about the distance attenuation of the material. In the joint structure, a clear attenuation difference was seen. It was confirmed that impact attenuation can be obtained more by examining the optimum attenuation structure.

Free Research Field

宇宙衝撃工学