Basic Study for the Acoustic Characteristics of Granular Material

• SAKAMOTO Shuichi

  Department of Mechanical and Production Engineering, Niigata University

• SAKUMA Yosuke

  Graduate School of Science and Technology, Niigata University

• YANAGIMOTO Kensaku

  Tsuruoka National College of Technology

• WATANABE Seiji

  Tsuruoka National College of Technology

書誌事項

タイトル別名

• (Normal Incidence Absorption Coefficient for Multilayer with Different Grain Diameters)

抄録

In this paper, several diameter of solid glass spherical grain was dealt. Each diameter grain has the each characteristic impedance and the complex wave constant. At first, the characteristic impedance and the complex wave constant for each grain diameters were measured. Then, the normal incidence absorption coefficient of each grain diameters for arbitrary layer thickness can be calculated. Likewise, the normal incidence absorption coefficient for multilayer with different grain diameters and arbitrary thicknesses can be calculated. This calculation process is comparatively lengthy, so the experiments for real multilayer and the calculations were compared. Result of the calculations coincided to the experiments. Consequently, calculation result of normal incidence absorption coefficient for multilayer with different grain diameters is useful.

収録刊行物

• Journal of Environment and Engineering

  Journal of Environment and Engineering 7 (1), 12-22, 2012

  一般社団法人 日本機械学会

キーワード

• Sound and Acoustics
• Noise Control
• Porous Media
• Material Design
• Absorption Coefficient
• Granular Material
• Multilayer
• Transfer Function Method
• Impedance Measurement Tube

詳細情報

• CRID: 1390001205262887808
• NII論文ID: 130002071676
• DOI: 10.1299/jee.7.12
• ISSN: 1880988X
• Web Site: https://www.jstage.jst.go.jp/article/jee/7/1/7_1_12/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可