Sound absorption coefficient from composites made from coconut fiber, paper, and styrofoam
Noise is an unpleasant/undesirable sound. Apart from noise, environmental problems are often faced by the community in the form of organic and inorganic waste resulting from several small/large industrial activities. Organic waste often encountered is young coconut fiber from activities in tradition...
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| Language: | English |
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University of Muhammadiyah Malang
2024-07-01
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| Series: | JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) |
| Online Access: | https://ejournal.umm.ac.id/index.php/JEMMME/article/view/32597 |
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| author | Amalia Ma'rifatul Maghfiroh |
| author_facet | Amalia Ma'rifatul Maghfiroh |
| author_sort | Amalia Ma'rifatul Maghfiroh |
| collection | DOAJ |
| description | Noise is an unpleasant/undesirable sound. Apart from noise, environmental problems are often faced by the community in the form of organic and inorganic waste resulting from several small/large industrial activities. Organic waste often encountered is young coconut fiber from activities in traditional markets. Paper waste comes from teaching and learning activities/offices. Styrofoam waste is included in the category of inorganic waste, which is very difficult to decompose, so it has a bad impact on the environment. Based on this, a composite was made from coconut fiber, paper and styrofoam so that it could be used as a sound absorber. Cylindrical composite specimens were made with different variations in composition and analyzed the differences in sound dampening ability in various compositions. The sound absorption capacity of the composite was measured at frequencies of 125 Hz, 250 Hz, 500 Hz, 750 Hz, 1,000 Hz, 2,000 Hz and 4,000 Hz. The composite acoustic test results obtained for samples A, B and C showed that the highest absorption energy was 49.57 dB at a frequency of 750 Hz for sample C. Meanwhile, the lowest absorption energy was 1.15 dB at a frequency of 500 Hz for sample A. The sound absorption coefficient values were obtained for all variations. The frequencies of samples A, B and C have good absorption coefficient values, namely ≥ 0.2. The lowest absorption coefficient value was 2.01 at a frequency of 750 Hz for sample C and the highest was 46.67 at a frequency of 500 Hz for sample A. |
| format | Article |
| id | doaj-art-f483368f8d2d48338a5dcd0c3fbce766 |
| institution | Kabale University |
| issn | 2541-6332 2548-4281 |
| language | English |
| publishDate | 2024-07-01 |
| publisher | University of Muhammadiyah Malang |
| record_format | Article |
| series | JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) |
| spelling | doaj-art-f483368f8d2d48338a5dcd0c3fbce7662025-01-21T05:02:28ZengUniversity of Muhammadiyah MalangJEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering)2541-63322548-42812024-07-019110.22219/jemmme.v9i1.3259730476Sound absorption coefficient from composites made from coconut fiber, paper, and styrofoamAmalia Ma'rifatul Maghfiroh0Universitas BojonegoroNoise is an unpleasant/undesirable sound. Apart from noise, environmental problems are often faced by the community in the form of organic and inorganic waste resulting from several small/large industrial activities. Organic waste often encountered is young coconut fiber from activities in traditional markets. Paper waste comes from teaching and learning activities/offices. Styrofoam waste is included in the category of inorganic waste, which is very difficult to decompose, so it has a bad impact on the environment. Based on this, a composite was made from coconut fiber, paper and styrofoam so that it could be used as a sound absorber. Cylindrical composite specimens were made with different variations in composition and analyzed the differences in sound dampening ability in various compositions. The sound absorption capacity of the composite was measured at frequencies of 125 Hz, 250 Hz, 500 Hz, 750 Hz, 1,000 Hz, 2,000 Hz and 4,000 Hz. The composite acoustic test results obtained for samples A, B and C showed that the highest absorption energy was 49.57 dB at a frequency of 750 Hz for sample C. Meanwhile, the lowest absorption energy was 1.15 dB at a frequency of 500 Hz for sample A. The sound absorption coefficient values were obtained for all variations. The frequencies of samples A, B and C have good absorption coefficient values, namely ≥ 0.2. The lowest absorption coefficient value was 2.01 at a frequency of 750 Hz for sample C and the highest was 46.67 at a frequency of 500 Hz for sample A.https://ejournal.umm.ac.id/index.php/JEMMME/article/view/32597 |
| spellingShingle | Amalia Ma'rifatul Maghfiroh Sound absorption coefficient from composites made from coconut fiber, paper, and styrofoam JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) |
| title | Sound absorption coefficient from composites made from coconut fiber, paper, and styrofoam |
| title_full | Sound absorption coefficient from composites made from coconut fiber, paper, and styrofoam |
| title_fullStr | Sound absorption coefficient from composites made from coconut fiber, paper, and styrofoam |
| title_full_unstemmed | Sound absorption coefficient from composites made from coconut fiber, paper, and styrofoam |
| title_short | Sound absorption coefficient from composites made from coconut fiber, paper, and styrofoam |
| title_sort | sound absorption coefficient from composites made from coconut fiber paper and styrofoam |
| url | https://ejournal.umm.ac.id/index.php/JEMMME/article/view/32597 |
| work_keys_str_mv | AT amaliamarifatulmaghfiroh soundabsorptioncoefficientfromcompositesmadefromcoconutfiberpaperandstyrofoam |