Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Department of Building Environment and Energy Engineering | en_US |
| dc.contributor.advisor | Du, Liangfen (BEEE) | en_US |
| dc.creator | Du, Haoran | - |
| dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/14081 | - |
| dc.language | English | en_US |
| dc.publisher | Hong Kong Polytechnic University | en_US |
| dc.rights | All rights reserved | en_US |
| dc.title | Study of sound absorption performance using acoustic grating structure | en_US |
| dcterms.abstract | Noise problems can be found everywhere, which has seriously endangered human society and caused a series of harms to human health. Structures with sound absorption ability can effectively control noise. This thesis focuses on a proposed acoustic grating structure, builds its model through the finite element analysis software: COMSOL Multiphysics, and through the images generated by it, such as sound absorption coefficient curve, sound pressure level diagram and other types to explore the sound absorption coefficient of this structure. After that, adjusts some structural parameters like the thickness of the microslits and cavity to observe the changes in its sound absorption coefficient. This thesis hopes to provide optimization directions for subsequent structures of similar structure. It can accurately adjust certain parameters according to the manufacturing requirements of the structure so as to take into account good sound absorption performance and other factors to achieve the optimal solution, and ultimately solve a lot of specific noise control or sound absorption problems in architectural acoustics. | en_US |
| dcterms.extent | ix, 70 pages : color illustrations | en_US |
| dcterms.isPartOf | PolyU Electronic Theses | en_US |
| dcterms.issued | 2025 | en_US |
| dcterms.educationalLevel | M.Eng. | en_US |
| dcterms.educationalLevel | All Master | en_US |
| dcterms.accessRights | restricted access | en_US |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 8538.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 4.3 MB | Adobe PDF | View/Open |
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