Gypsum-based sound absorber produced by 3D printing technology

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dc.authorid0000-0002-3498-7072en_US
dc.contributor.authorAslan, Ramazan
dc.contributor.authorTuran, Osman
dc.date.accessioned2021-03-20T20:09:31Z
dc.date.available2021-03-20T20:09:31Z
dc.date.issued2020
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümüen_US
dc.description.abstractThe paper presents an alternative gypsum-based porous cellular sound absorber manufactured using 3D printing technology. The effects of cell structure and porosity on sound absorption coefficient have been experimentally investigated for the designed gypsum-based porous metamaterials. In addition to this, the numerical acoustic analyses were also performed to predict sound absorption behaviour of the produced gypsum-based porous metamaterials. Furthermore, the numerical flow analyses were also carried out to gain insight into the basic parameters such as flow resistance and tortuosity that affect the sound absorption behaviour of the designed gypsum-based porous metamaterials. As a result of the experimental and numerical studies, it has been observed that the gypsum specimens produced in porous structure provide a significant sound absorption in comparison to non-porous reference specimen. It has been also noticed that the open-cell gypsum specimens, in which the cells are interaction with each other, are much more efficient in terms of sound absorption than the open-cell structure in which there is no direct interaction between the cells. In addition to this, it was found that the gypsum specimens having Octet unit-cell structure have the highest sound absorption performance in the open cell structures. In other respects, it was also found that the sound absorption behaviour of each unit cell structure is getting worse with the increasing porosity. The numerical flow analyses have indicated that increase in porosity reduces the flow resistance and tortuosity levels of the open unit-cell structures and consequently worsens the sound absorption behaviour. (C) 2019 Elsevier Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.apacoust.2019.107162en_US
dc.identifier.issn0003-682X
dc.identifier.issn1872-910X
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttp://doi.org/10.1016/j.apacoust.2019.107162
dc.identifier.urihttps://hdl.handle.net/20.500.12885/451
dc.identifier.volume161en_US
dc.identifier.wosWOS:000513986000013en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorAslan, Ramazan
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofApplied Acousticsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNoise controlen_US
dc.subjectSound absorberen_US
dc.subjectPorous metamaterialen_US
dc.subject3D printingen_US
dc.subjectFlow analysisen_US
dc.titleGypsum-based sound absorber produced by 3D printing technologyen_US
dc.typeArticleen_US

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