• About
  • Policies
  • What is open access
  • Library
  • Contact
Advanced search
      View Item 
      •   BUIR Home
      • University Library
      • Bilkent Theses
      • Theses - Department of Architecture
      • Dept. of Architecture - Master's degree
      • View Item
      •   BUIR Home
      • University Library
      • Bilkent Theses
      • Theses - Department of Architecture
      • Dept. of Architecture - Master's degree
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      Biomimetic acoustic metamaterial design for architectural applications

      Thumbnail
      Embargo Lift Date: 2022-08-24
      View / Download
      55.2 Mb
      Author(s)
      Yazıcı, Beyza
      Advisor
      Gül, Zühre Sü
      Date
      2020-08
      Publisher
      Bilkent University
      Language
      English
      Type
      Thesis
      Item Usage Stats
      387
      views
      20
      downloads
      Abstract
      This study investigates the potentials of acoustic metamaterial (AMM) applications in room and building acoustics by means of impedance tube experiments. With their extreme properties in either sound absorption or transmission loss, AMMs can perform better than many traditional acoustic materials in buildings. Importantly, they are also more sustainable and hygienic than fibrous and porous materials. Depending on the matrix material used, AMMs can vary in transparency and color. Considering both their acoustic and aesthetic values, this study develops different types of metamaterial for possible uses as a partition wall, a surface layer, or a design element. The proposed metamaterials are primarily based on the exploration of ratios and forms from nature – the golden ratio, web-labyrinthine structures, genetic and neural systems such as DNA molecules and the synapse structures in the brain – reproduced on a sub-wavelength scale. These abstractions are then combined with the 3D space coiling and 3D labyrinth approaches of AMM design. Modules of the proposed AMMs are manufactured in a 3D printer and tested in an impedance tube to estimate their normal incidence sound absorption coefficients and transmission loss characteristics. Based on the results obtained, the modules with the higher performances are used in the design of partition walls of varying heights. Two real-case architecture studios are simulated with and without the proposed AMM interventions over field test-tuned acoustical models of the studios to assess the effectiveness of such an approach in a possible acoustical design problem.
      Keywords
      Acoustic metamaterial
      Space-coiling
      Sound absorption
      Transmission loss
      Bio-mimicking
      Impedance tube measurements
      Room and building acoustics
      Permalink
      http://hdl.handle.net/11693/53978
      Collections
      • Dept. of Architecture - Master's degree 33
      Show full item record

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsCoursesThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsCourses

      My Account

      Login

      Statistics

      View Usage StatisticsView Google Analytics Statistics

      Bilkent University

      If you have trouble accessing this page and need to request an alternate format, contact the site administrator. Phone: (312) 290 2976
      © Bilkent University - Library IT

      Contact Us | Send Feedback | Off-Campus Access | Admin | Privacy