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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Piezoelectric behavior of wood under combined compression and vibration stresses I: Relation between piezoelectric voltage and microscopic deformation of a Sitka spruce (Picea sitchensis Carr.)

Journal of Wood Science volume 44, pages 28–34 (1998)Cite this article

Abstract

This study investigated the relation between piezoelectric behavior and the deformation of trachieds in real time under combined compression and vibration stresses. Scanning electron microscope images were recorded directly into a video recorder. Two types of microscopic destruction were observed in the specimens. With the first type, although a small uprush around the boundary of the annual ring was observed, the specimens were broken only by shearing fracture in the 45° direction. With the second type, the specimens were finally broken by shearing fracture after repeated buckling. In these cases the piezoelectric voltage increased almost linearly in the elastic region, proceeded to the maximal point, and then decreased gradually. Finally a clear peak appeared in the buckling and shearing fracture. There is a curved relation between the specific gravity and the piezoelectric parameter when the influence of voids is considered, and there is a linear relation between the dynamic Young's modulus and the piezoelectric parameter when the stress is considered.

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Authors and Affiliations

  1. Japan Science and Technology Corporation (JST), 4-1-8 Honmachi, 322, Kawaguchi, Japan

    Takahisa Nakai

  2. Higashiura Karimoku, 1-14 Nanei-cho, 470-21, Fujie, Higashiura, Chita-gun, Aichi, Japan

    Naoyasu Igushi

  3. School of Agricultural Science, Nagoya University, 464-01, Furo-cho, Chikusa-ku, Nagoya, Japan

    Kose Ando

Authors
  1. Takahisa Nakai
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  2. Naoyasu Igushi
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  3. Kose Ando
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Corresponding author

Correspondence to Takahisa Nakai.

Additional information

Part of this paper was presented at the 46th annual meeting of the Japan Wood Research Society in Kumamoto, April 1996

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Nakai, T., Igushi, N. & Ando, K. Piezoelectric behavior of wood under combined compression and vibration stresses I: Relation between piezoelectric voltage and microscopic deformation of a Sitka spruce (Picea sitchensis Carr.). J Wood Sci 44, 28–34 (1998). https://doi.org/10.1007/BF00521871

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  • DOI: https://doi.org/10.1007/BF00521871

Key words

  • Combined compression and vibration stresses
  • Piezoelectric voltage
  • Buckling
  • Shearing fracture