J041013 植物水ポテンシャルの非破壊評価を目的としたミニトマト茎部の超音波測定([J041-01]超音波計測・解析法の新展開(1))

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  • J041013 Ultrasonic measurement at stem of miniature tomato for Nondestructive evaluation of plant water potential

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The measurement of transmitting and receiving ultrasonic vibration was performed for the purpose of non-destructive evaluation of water potential. The AE sensor and laminated piezoelectric actuator were installed on the stem of mini tomato's true leaf and the propagation characteristics of the ultrasonic vibration were measured. The water potential, furthermore, was measured by the pressure chamber method. Then, the correlation between ultrasonic characteristics and water potential was investigated. The center frequency of the FFT spectrum of the detected waveforms, fw was decreased with the decrease of water potential. Such a degradation of fw might be caused by the increase of the attenuation of the ultrasonic vibration in the range of high frequency when the stem was wilted due to falling water potential.

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  • 年次大会

    年次大会 2013 (0), _J041013-1-_J041013-3, 2013

    一般社団法人 日本機械学会

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