RESONANCE VIBRATIONS AND SOUNDS OF CONCRETE MEMBERS DUE TO IMPACT

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  • ASANO Masanori
    社団法人 土木学会 岐阜大学大学院 工学研究科
  • KAMADA Toshiro
    社団法人 土木学会 岐阜大学 工学部社会基盤工学科
  • KUNIEDA Minoru
    社団法人 土木学会 岐阜大学 工学部社会基盤工学科
  • ROKUGO Keitetsu
    社団法人 土木学会 岐阜大学 工学部社会基盤工学科

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Other Title
  • 打撃によるコンクリート部材の共振現象と打撃音の周波数特性

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Description

The relation between vibrations of concrete members due to impact and radiating sounds is investigated. In experiments, resonance vibrations of the flexural mode and the longitudinal mode were studied by using bar-shape and flat-slab specimens. For the measurement, an accelerometer and a microphone were used to record the surface vibrations and radiating sounds generated by impact, respectively. The relation between the surface vibration and the radiating sound was investigated by frequency spectra. As a result, the difference of surface vibrations and radiating sounds was clarified from the viewpoint of the resonance vibration and the sound source.

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