木材細胞壁の微細構造を考慮した圧電気出力特性

• 中井 毅尚

  島根大学総合理工学部材料プロセス工学科

• 山本 浩之

  名古屋大学大学院生命農学研究科

書誌事項

タイトル別名

• Properties of Piezoelectric Voltage Considering Microscopic Structure of Wood Cell Walls
• モクザイ サイボウヘキ ノ ビサイ コウゾウ オ コウリョ シタ アツ デンキ シュツリョク トクセイ

抄録

Elastic calculations were performed for analyzing the elastic strain field in a cell wall and the cellulose microfibril (CMF) when the wood specimen having an inclined grain is subjected to a uniaxial load. Shear strain and shear stress generated in a cell wall and the CMF were finally predicted. In the present case, it is hypothesized that elastic constants E₁, E₂, G₁₂, and ν₂₁ in Eqs. (6) can be calculated from the simple mixture rule. If we consider that shear strain γ₁₂ in Eq. (10) and γ'₁₂ in Eq. (15) cause the generation of piezoelectric voltage in the CMF, measured piezoelectric voltage must be proportional to the superposition of those shear strains over all tracheid in the wood specimen. Assuming that a wood specimen could be represented by the multi-tracheid model as shown in Fig. 7, we derived the formulas (23) to (26) which should be proportional to piezoelectric voltage generated in the wood specimen having an inclined grain. Based on those ideas, we could explain the experimental result that a plot of the piezoelectric voltage versus the grain angle of the wood specimen gave a convex curve with a peak at 45 degrees.

収録刊行物

• 材料

  材料 55 (4), 378-383, 2006

  公益社団法人 日本材料学会

キーワード

• Cellulose microfibril angle
• Uniaxial load
• Shear strain
• Shear stress
• Piezoelectric voltage

詳細情報

• CRID: 1390001205417723648
• NII論文ID: 110006570930
• NII書誌ID: AN00096175
• DOI: 10.2472/jsms.55.378
• ISSN: 18807488
• ISSN: 05145163
• NDL書誌ID: 7935753
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7935753
• 本文言語コード: ja
• データソース種別:
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