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首页> 外文期刊>配管·装置·プラント技術 >Studies on measuring quality of fruits and vegetables by acoustic technique (Part 2) - Influence of intercellular space gas on longitudinal wave velocity and elastic moduli of parenchyma
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Studies on measuring quality of fruits and vegetables by acoustic technique (Part 2) - Influence of intercellular space gas on longitudinal wave velocity and elastic moduli of parenchyma

机译：声学技术（第2部分）对水果和蔬菜质量的研究 - 间细胞间空气对纵向波速度的影响及实质的弹性模态

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For fruits and vegetables of high water content, internal gas volume fraction, density, longitudinal wave velocity and quasi-static Young's modulus were measured at atmospheric pressure and higher pressure (0.1-1 MPa), and the validity of the gas-dispersed model already reported was investigated experimentally. Longitudinal wave velocity was decreased as internal gas volume fraction was increased and this decreasing tendency agreed with the theoretical line. Bulk modulus dominated longitudinal wave velocity, but quasi-static Young's modulus had little influence on wave velocity. Internal gas volume fraction and density were inversely correlated. Physical property predicted by longitudinal wave velocity, therefore, was not only internal gas volume fraction but also density.
机译：对于高含水量的水果和蔬菜，在大气压和较高的压力（0.1-1MPa）处测量内部气体体积分数，密度，纵波速度和准静态模量，以及煤气分散模型的有效性 报告经过实验研究。 随着内部气体体积分数增加，随着理论线商定，纵向波速度降低。 散装模量主导纵向波速，但准静态杨氏模量对波速度几乎没有影响。 内部气体体积分数和密度是同步相关的。 因此，通过纵向波速度预测的物理性质不仅是内部气体体积分数，而且是密度。

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