国立研究開発法人 国際農林水産業研究センター | JIRCAS

Acoustic Characteristics of Fresh Tea Leaves

JARQ : Japan Agricultural Research Quarterly
ISSN
00213551
書誌レコードID(総合目録DB)
AA0068709X
本文フルテキスト

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.

刊行年月2005-01-01
作成者FUKUHARA MikioOKUSHIMA LimiMATSUO KiyoshiHOMMA Tomoo
著者キーワード

ultrasonic transmission analysis

viscoelasticity

natural quasi-polymers

公開者Japan International Research Center for Agricultural Sciences
データ作成日2005-01-01
国立情報学研究所メタデータ主題語彙集(資源タイプ)Journal Article
39
1
開始ページ45
終了ページ49
DOI10.6090/jarq.39.45
権利Japan International Research Center for Agricultural Sciences
言語eng