Acoustic Characteristics of Fresh Tea Leaves

Japan Agricultural Research Quarterly
ISSN 00213551
NII recode ID (NCID) AA0068709X
Full text
39-01-07.pdf313.85 KB

The acoustic characteristics of sound fresh tea leaves were determined nondestructively by ultrasonic transmission analysis. As thickness increases, phase velocity and wavelength increase, and damping ratio and dynamic viscosity decrease, suggesting development of the fibrous tissues, accompanied by frequency convergence. The velocities of all the leaves studied were smaller than that of pure water. Decrease in viscoelasticity corresponds to increase in dynamic modulus. Thus, acoustically, we can regard the leaves as natural quasi-polymers with high viscoelasticity.

Date of issued
Creator FUKUHARA Mikio OKUSHIMA Limi MATSUO Kiyoshi HOMMA Tomoo
Subject

ultrasonic transmission analysis

viscoelasticity

natural quasi-polymers

Publisher Japan International Research Center for Agricultural Sciences
Available Online
NII resource type vocabulary Journal Article
Volume 39
Issue 1
spage 45
epage 49
DOI 10.6090/jarq.39.45
Rights Japan International Research Center for Agricultural Sciences
Language eng

Related Publication