Acoustic characteristics of fresh tea leaves

Mikio Fukuhara, Limi Okushima, Kiyoshi Matsuo, Tomoo Homma

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)45-49
Number of pages5
JournalJapan Agricultural Research Quarterly
Issue number1
Publication statusPublished - 2005 Jan


  • Natural quasi-polymers
  • Ultrasonic transmission analysis
  • Viscoelasticity

ASJC Scopus subject areas

  • Biotechnology
  • Ecology
  • Animal Science and Zoology
  • Agronomy and Crop Science


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