Assessment of Dynamic Young’s Modulus and Damping Ratio of Bamboo Fiber Reinforced Polymer Composites using Shock Wave

Kengo Yamamoto, Akito Takasaki, Naoki Hosoya

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

In recent years, polymer composites using natural fibers have attracted attention. To evaluate the aging process of the polymer composites caused by ultraviolet rays, one has to apply non-destructive tests. In this paper, we established an assessment system using laser-induced plasma shock wave as an impulse excitation to evaluate a Young’s modulus and a damping ratio of polymer composites composed of bamboo fiber and phenolic resin. A shock wave is generated when laser-induced plasma expands at a high velocity throughout the ambient. Measuring responses of the composites by a laser Doppler vibrometer, we obtain absolute value of Fourier spectra and their natural frequencies. We used those to determine dynamic Young’s moduli and damping ratios of the composites. We made the composites which were fabricated by a hot press using a mold. There were the same trend between the dynamic Young’s moduli obtained by our system and the ones measured by a three-point flexural bending test. We could additionally obtain the damping ratios of the composites.

Original languageEnglish
Title of host publicationMechanisms and Machine Science
PublisherSpringer Netherlands
Pages4217-4226
Number of pages10
DOIs
Publication statusPublished - 2019 Jan 1

Publication series

NameMechanisms and Machine Science
Volume73
ISSN (Print)2211-0984
ISSN (Electronic)2211-0992

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Keywords

  • Bamboo Fiber Reinforced Polymer Composite
  • Damping ratio
  • Dynamic Young’s Modulus
  • Laser-induced plasma
  • Shock Wave

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Yamamoto, K., Takasaki, A., & Hosoya, N. (2019). Assessment of Dynamic Young’s Modulus and Damping Ratio of Bamboo Fiber Reinforced Polymer Composites using Shock Wave. In Mechanisms and Machine Science (pp. 4217-4226). (Mechanisms and Machine Science; Vol. 73). Springer Netherlands. https://doi.org/10.1007/978-3-030-20131-9_420