Industrial Design Engineering

Bachelor Assignment

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Haalstra, E.C.T. (Eleanne)

Development of a sound-absorbing room divider with quarter-wavelength resonators

At: University of Twente

This thesis is about the development of a sound-absorbing panel with quarter-wavelength resonators into a usable product. The first part of the thesis describes the additional process of finding a consumer application for the panel, which has become a room divider. The second part of the thesis describes the design process of developing the quarter-wavelength resonators into square and triangular blocks that absorb sound on the front and rear side and developing a frame to create the room divider. The final products are plexiglass square and triangular blocks that absorb sound on two sides with quarter-wavelength resonators and a design for an open structured steel and wooden frame. A plexiglass prototype was made of the absorber. The absorber is optimized to absorb frequencies between 350 Hz - 2000 Hz, which are found to be most disturbing when communicating.

Exam date: 08-07-2021