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Study on Verification of sound refraction in porous material and investigation of insertion effect of porous material into light double leaf wall

Research Project

Project/Area Number 22656122
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Architectural environment/equipment
Research InstitutionNiigata University

Principal Investigator

IWASE Teruo  新潟大学, 自然科学系, 教授 (30114391)

Co-Investigator(Renkei-kenkyūsha) YOSHIMURA Junnichi  (財)小林理学研究所, 建築音響研究室, 室長 (00142050)
SUGIE Satoshi  (財)小林理学研究所, 建築音響研究室, 室員 (00280644)
Project Period (FY) 2010 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥3,210,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥2,300,000 (Direct Cost: ¥2,300,000)
Keywords多孔質材料 / 吸音率 / 粒子速度 / 音響計測 / 軽量2重壁 / 音響屈折 / 遮音 / 音響伝搬定数 / グラスウール / コインシデンス効果
Research Abstract

In the case of oblique sound incidence into porous media from the air, phenomenon of sound refraction has been guessed because sound velocity is lower in the porous media than that in the air. Main subject of this study was sound refraction, then the phenomenon wad verified by acoustical experiment on the oblique sound incidence into glass wool of typical porous material from the air. Moreover, establishment of quantitative grasping method of insertion effect of glass wool on the sound insulation of lightweight double leaf wall. It was confirmed that the insertion effects corresponded to the sound attenuation according to propagation length along the sound refracted path in porous material in double leaf wall.

Report

(3 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • Research Products

    (10 results)

All 2012 2011 2010 Other

All Presentation (8 results) Remarks (2 results)

  • [Presentation] 複層ガラスにおけるガラス面上の振動応答の観測について2012

    • Author(s)
      堀口佑太,岩瀬昭雄
    • Organizer
      日本音響学会騒音・振動研究会資料
    • Year and Date
      2012-02-23
    • Related Report
      2011 Final Research Report
  • [Presentation] 複層ガラスにおけるガラス面上の振動応答の観測について2012

    • Author(s)
      堀口祐太、岩瀬昭雄
    • Organizer
      日本音響学会騒音振動研究会
    • Place of Presentation
      新潟大学
    • Year and Date
      2012-02-23
    • Related Report
      2011 Annual Research Report
  • [Presentation] 低い周波数領域における二重壁の遮音性能の向上-レゾネータの適用構法の検討-2011

    • Author(s)
      杉江聡,吉村純一,岩瀬昭雄
    • Organizer
      日本音響学会建築音響研究会資料
    • Year and Date
      2011-12-21
    • Related Report
      2011 Final Research Report
  • [Presentation] 共鳴機構を有するスタッドを用いた乾式二重壁の遮音性能2011

    • Author(s)
      杉江聡,吉村純一
    • Organizer
      日本音響学会秋季研究発表会講演論文集
    • Year and Date
      2011-09-21
    • Related Report
      2011 Final Research Report
  • [Presentation] グラスウール中の音響伝搬の離散音源による観測と軽量2重壁への挿入効果の検討2011

    • Author(s)
      岩瀬昭雄
    • Organizer
      日本音響学会秋季研究発表会
    • Year and Date
      2011-09-21
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] グラスウール中の音響伝搬現象について離散複数音源による実験と伝搬定数による論理的考察2011

    • Author(s)
      岩瀬昭雄
    • Organizer
      日本建築学会学術講演梗概集
    • Year and Date
      2011-08-25
    • Related Report
      2011 Final Research Report
  • [Presentation] 粒子速度に着目した音響計測法とその応用までの取り組み2010

    • Author(s)
      岩瀬昭雄
    • Organizer
      日本音響学会建築音響研究委員会資料
    • Year and Date
      2010-11-22
    • Related Report
      2011 Final Research Report
  • [Presentation] Invited Paper Optimization of structural factors for Helmholtz resonator to improve sound insulation of lightweight double leaf partition2010

    • Author(s)
      SUGIE Satoshi, YOSHIMURA Junichi and IWASE Teruo
    • Organizer
      Proceedings CD-ROM of inter-noise 2010
    • Year and Date
      2010-06-14
    • Related Report
      2011 Final Research Report
  • [Remarks]

    • URL

      http://iwase-lab.eng.niigata-u.ac.jp/index.html

    • Related Report
      2011 Final Research Report
  • [Remarks]

    • URL

      http://iwase-lab.eng.niigata-u.ac.jp/index.html

    • Related Report
      2011 Annual Research Report

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Published: 2010-08-23   Modified: 2019-05-09  

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