Dielectric elastomer minimum energy structure for acoustic absorber’s cavity volume control
Dielectric elastomer minimum energy structure for acoustics absorber’s cavity volume control is investigated in this project. In this project, theory of tunable acoustic absorber is reviewed. We demonstrate that sound absorption can be tuned to targeted frequency by changing the volume of the back c...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2018
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| Online Access: | http://hdl.handle.net/10356/75637 |
| _version_ | 1826109806618869760 |
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| author | Phneah, Swee Xin |
| author2 | Lau Gih Keong |
| author_facet | Lau Gih Keong Phneah, Swee Xin |
| author_sort | Phneah, Swee Xin |
| collection | NTU |
| description | Dielectric elastomer minimum energy structure for acoustics absorber’s cavity volume control is investigated in this project. In this project, theory of tunable acoustic absorber is reviewed. We demonstrate that sound absorption can be tuned to targeted frequency by changing the volume of the back cavity. A resonator is developed by employing a dielectric elastomer minimum energy structure (DEMES) to control the volume of the back cavity. The DEMES actuators are bonded on both side of the slot, enclose by a powdered membrane to form a back cavity. During application of voltage, the actuator can be unfolded. Hence pressing the powdered membrane inwards, reducing the back cavity volume. |
| first_indexed | 2024-10-01T02:24:25Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/75637 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:24:25Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/756372023-03-04T18:28:21Z Dielectric elastomer minimum energy structure for acoustic absorber’s cavity volume control Phneah, Swee Xin Lau Gih Keong School of Mechanical and Aerospace Engineering DRNTU::Engineering DRNTU::Engineering::Mechanical engineering::Mechanics and dynamics Dielectric elastomer minimum energy structure for acoustics absorber’s cavity volume control is investigated in this project. In this project, theory of tunable acoustic absorber is reviewed. We demonstrate that sound absorption can be tuned to targeted frequency by changing the volume of the back cavity. A resonator is developed by employing a dielectric elastomer minimum energy structure (DEMES) to control the volume of the back cavity. The DEMES actuators are bonded on both side of the slot, enclose by a powdered membrane to form a back cavity. During application of voltage, the actuator can be unfolded. Hence pressing the powdered membrane inwards, reducing the back cavity volume. Bachelor of Engineering (Mechanical Engineering) 2018-06-06T03:26:17Z 2018-06-06T03:26:17Z 2018 Final Year Project (FYP) http://hdl.handle.net/10356/75637 en Nanyang Technological University 41 p. application/pdf |
| spellingShingle | DRNTU::Engineering DRNTU::Engineering::Mechanical engineering::Mechanics and dynamics Phneah, Swee Xin Dielectric elastomer minimum energy structure for acoustic absorber’s cavity volume control |
| title | Dielectric elastomer minimum energy structure for acoustic absorber’s cavity volume control |
| title_full | Dielectric elastomer minimum energy structure for acoustic absorber’s cavity volume control |
| title_fullStr | Dielectric elastomer minimum energy structure for acoustic absorber’s cavity volume control |
| title_full_unstemmed | Dielectric elastomer minimum energy structure for acoustic absorber’s cavity volume control |
| title_short | Dielectric elastomer minimum energy structure for acoustic absorber’s cavity volume control |
| title_sort | dielectric elastomer minimum energy structure for acoustic absorber s cavity volume control |
| topic | DRNTU::Engineering DRNTU::Engineering::Mechanical engineering::Mechanics and dynamics |
| url | http://hdl.handle.net/10356/75637 |
| work_keys_str_mv | AT phneahsweexin dielectricelastomerminimumenergystructureforacousticabsorberscavityvolumecontrol |