Development of Folded Expanded Metal Mesh with Sound Absorption Performance
Reverberation time (RT) is an important factor affecting the quality of indoor acoustics. Using sound-absorbing materials is one method for quickly and effectively controlling RT, and installation in the ceiling is a common location. Sound-absorbing ceilings come in many forms, with light steel jois...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/15/7021 |
| _version_ | 1827686633613295616 |
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| author | Jui-Yen Lin Yaw-Shyan Tsay Pin-Chieh Tseng |
| author_facet | Jui-Yen Lin Yaw-Shyan Tsay Pin-Chieh Tseng |
| author_sort | Jui-Yen Lin |
| collection | DOAJ |
| description | Reverberation time (RT) is an important factor affecting the quality of indoor acoustics. Using sound-absorbing materials is one method for quickly and effectively controlling RT, and installation in the ceiling is a common location. Sound-absorbing ceilings come in many forms, with light steel joist ceilings commonly used in office spaces, classrooms, and discussion rooms. Light steel joist ceilings are often matched with sound-absorbing materials such as gypsum board, mineral fiberboard, rock wool, and coated glass wool, but such materials may have durability and exfoliation problems. Therefore, considering performance and health, in this research, we aimed to design an expanded metal mesh (EMM) structure specimen for sound-absorption material, namely folded expanded metal mesh (FEMM). The results show that the FEMM can significantly improve the sound-absorption performance of the expanded metal mesh. The <inline-formula><span style="color: red; background-color: yellow; line-height: normal;" data-mjx-error="this.variant[t] is undefined" aria-hidden="true">Math output error</span><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mo mathvariant="san-serif">α</mo><mi>w</mi></msub></mrow></semantics></math></inline-formula> of single panel is 0.05–0.35, and the <inline-formula><span style="color: red; background-color: yellow; line-height: normal;" data-mjx-error="this.variant[t] is undefined" aria-hidden="true">Math output error</span><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mo mathvariant="san-serif">α</mo><mi>w</mi></msub></mrow></semantics></math></inline-formula> of FEMM is 0.65–0.85. On the other hand, the sound-absorption performance of the full frequency band has been significantly improved. Furthermore, the field validation result shows that RT decreased from 1.05–0.56 s at 500 Hz, meanwhile, the sound pressure level (SPL) is still evenly distributed, and speech clarity (<i>C</i><sub>50</sub>) is increased by 5.6–6.5. |
| first_indexed | 2024-03-10T09:18:37Z |
| format | Article |
| id | doaj.art-351b1aeba8fa4387b4784d7fc6483280 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:18:37Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-351b1aeba8fa4387b4784d7fc64832802023-11-22T05:23:13ZengMDPI AGApplied Sciences2076-34172021-07-011115702110.3390/app11157021Development of Folded Expanded Metal Mesh with Sound Absorption PerformanceJui-Yen Lin0Yaw-Shyan Tsay1Pin-Chieh Tseng2Department of Architecture, National Cheng Kung University, Tainan 70101, TaiwanDepartment of Architecture, National Cheng Kung University, Tainan 70101, TaiwanDepartment of Architecture, National Cheng Kung University, Tainan 70101, TaiwanReverberation time (RT) is an important factor affecting the quality of indoor acoustics. Using sound-absorbing materials is one method for quickly and effectively controlling RT, and installation in the ceiling is a common location. Sound-absorbing ceilings come in many forms, with light steel joist ceilings commonly used in office spaces, classrooms, and discussion rooms. Light steel joist ceilings are often matched with sound-absorbing materials such as gypsum board, mineral fiberboard, rock wool, and coated glass wool, but such materials may have durability and exfoliation problems. Therefore, considering performance and health, in this research, we aimed to design an expanded metal mesh (EMM) structure specimen for sound-absorption material, namely folded expanded metal mesh (FEMM). The results show that the FEMM can significantly improve the sound-absorption performance of the expanded metal mesh. The <inline-formula><span style="color: red; background-color: yellow; line-height: normal;" data-mjx-error="this.variant[t] is undefined" aria-hidden="true">Math output error</span><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mo mathvariant="san-serif">α</mo><mi>w</mi></msub></mrow></semantics></math></inline-formula> of single panel is 0.05–0.35, and the <inline-formula><span style="color: red; background-color: yellow; line-height: normal;" data-mjx-error="this.variant[t] is undefined" aria-hidden="true">Math output error</span><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mo mathvariant="san-serif">α</mo><mi>w</mi></msub></mrow></semantics></math></inline-formula> of FEMM is 0.65–0.85. On the other hand, the sound-absorption performance of the full frequency band has been significantly improved. Furthermore, the field validation result shows that RT decreased from 1.05–0.56 s at 500 Hz, meanwhile, the sound pressure level (SPL) is still evenly distributed, and speech clarity (<i>C</i><sub>50</sub>) is increased by 5.6–6.5.https://www.mdpi.com/2076-3417/11/15/7021folded expanded metal meshceiling panelsroom acoustics |
| spellingShingle | Jui-Yen Lin Yaw-Shyan Tsay Pin-Chieh Tseng Development of Folded Expanded Metal Mesh with Sound Absorption Performance Applied Sciences folded expanded metal mesh ceiling panels room acoustics |
| title | Development of Folded Expanded Metal Mesh with Sound Absorption Performance |
| title_full | Development of Folded Expanded Metal Mesh with Sound Absorption Performance |
| title_fullStr | Development of Folded Expanded Metal Mesh with Sound Absorption Performance |
| title_full_unstemmed | Development of Folded Expanded Metal Mesh with Sound Absorption Performance |
| title_short | Development of Folded Expanded Metal Mesh with Sound Absorption Performance |
| title_sort | development of folded expanded metal mesh with sound absorption performance |
| topic | folded expanded metal mesh ceiling panels room acoustics |
| url | https://www.mdpi.com/2076-3417/11/15/7021 |
| work_keys_str_mv | AT juiyenlin developmentoffoldedexpandedmetalmeshwithsoundabsorptionperformance AT yawshyantsay developmentoffoldedexpandedmetalmeshwithsoundabsorptionperformance AT pinchiehtseng developmentoffoldedexpandedmetalmeshwithsoundabsorptionperformance |