Manufacturing and modelling of sintered micro-porous absorption material for low frequency applications

Marjaana Karhu (Corresponding Author), Tomi J Lindroos, Seppo Uosukainen

    Research output: Contribution to journalArticleScientificpeer-review

    8 Citations (Scopus)

    Abstract

    A novel sintering based method to produce thin ultrahigh molecular weight polyethylene, UHMWPE, absorption material layer to increase absorption at low frequencies is introduced. The experimental impedance tube measurement results show that a 4 mm thick sintered sample layer increases absorption at a low frequency range below 1000 Hz compared with commercial melamine and polyester absorption foam samples. To cover a wider frequency range, multilayer structures composed of a sintered micro-porous material layer and commercial melamine and polyester foam layers are created and examined. The sintered sample layer also increases absorption in multilayer structures at low frequencies. Absorption coefficient values above 0.5 are reached starting from 200 Hz with multilayer structures. Software exploiting Biot's theory of porous materials has been adopted to fit the experimental absorption data for sintered samples, commercial foams and multilayers. Software based on Biot's theory was found to deliver quite good correlation with measured absorption coefficient values, with disagreements below 10% between the measured and estimated values.
    Original languageEnglish
    Pages (from-to)150-160
    Number of pages11
    JournalApplied Acoustics
    Volume85
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    material absorption
    manufacturing
    low frequencies
    foams
    laminates
    melamine
    polyesters
    porous materials
    absorptivity
    frequency ranges
    computer programs
    polyethylenes
    molecular weight
    sintering
    impedance
    tubes

    Keywords

    • ProperPart

    Cite this

    @article{df47c8c00b4a4ac59afd5b8c29222c67,
    title = "Manufacturing and modelling of sintered micro-porous absorption material for low frequency applications",
    abstract = "A novel sintering based method to produce thin ultrahigh molecular weight polyethylene, UHMWPE, absorption material layer to increase absorption at low frequencies is introduced. The experimental impedance tube measurement results show that a 4 mm thick sintered sample layer increases absorption at a low frequency range below 1000 Hz compared with commercial melamine and polyester absorption foam samples. To cover a wider frequency range, multilayer structures composed of a sintered micro-porous material layer and commercial melamine and polyester foam layers are created and examined. The sintered sample layer also increases absorption in multilayer structures at low frequencies. Absorption coefficient values above 0.5 are reached starting from 200 Hz with multilayer structures. Software exploiting Biot's theory of porous materials has been adopted to fit the experimental absorption data for sintered samples, commercial foams and multilayers. Software based on Biot's theory was found to deliver quite good correlation with measured absorption coefficient values, with disagreements below 10{\%} between the measured and estimated values.",
    keywords = "ProperPart",
    author = "Marjaana Karhu and Lindroos, {Tomi J} and Seppo Uosukainen",
    year = "2014",
    doi = "10.1016/j.apacoust.2014.04.008",
    language = "English",
    volume = "85",
    pages = "150--160",
    journal = "Applied Acoustics",
    issn = "0003-682X",
    publisher = "Elsevier",

    }

    Manufacturing and modelling of sintered micro-porous absorption material for low frequency applications. / Karhu, Marjaana (Corresponding Author); Lindroos, Tomi J; Uosukainen, Seppo.

    In: Applied Acoustics, Vol. 85, 2014, p. 150-160.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Manufacturing and modelling of sintered micro-porous absorption material for low frequency applications

    AU - Karhu, Marjaana

    AU - Lindroos, Tomi J

    AU - Uosukainen, Seppo

    PY - 2014

    Y1 - 2014

    N2 - A novel sintering based method to produce thin ultrahigh molecular weight polyethylene, UHMWPE, absorption material layer to increase absorption at low frequencies is introduced. The experimental impedance tube measurement results show that a 4 mm thick sintered sample layer increases absorption at a low frequency range below 1000 Hz compared with commercial melamine and polyester absorption foam samples. To cover a wider frequency range, multilayer structures composed of a sintered micro-porous material layer and commercial melamine and polyester foam layers are created and examined. The sintered sample layer also increases absorption in multilayer structures at low frequencies. Absorption coefficient values above 0.5 are reached starting from 200 Hz with multilayer structures. Software exploiting Biot's theory of porous materials has been adopted to fit the experimental absorption data for sintered samples, commercial foams and multilayers. Software based on Biot's theory was found to deliver quite good correlation with measured absorption coefficient values, with disagreements below 10% between the measured and estimated values.

    AB - A novel sintering based method to produce thin ultrahigh molecular weight polyethylene, UHMWPE, absorption material layer to increase absorption at low frequencies is introduced. The experimental impedance tube measurement results show that a 4 mm thick sintered sample layer increases absorption at a low frequency range below 1000 Hz compared with commercial melamine and polyester absorption foam samples. To cover a wider frequency range, multilayer structures composed of a sintered micro-porous material layer and commercial melamine and polyester foam layers are created and examined. The sintered sample layer also increases absorption in multilayer structures at low frequencies. Absorption coefficient values above 0.5 are reached starting from 200 Hz with multilayer structures. Software exploiting Biot's theory of porous materials has been adopted to fit the experimental absorption data for sintered samples, commercial foams and multilayers. Software based on Biot's theory was found to deliver quite good correlation with measured absorption coefficient values, with disagreements below 10% between the measured and estimated values.

    KW - ProperPart

    U2 - 10.1016/j.apacoust.2014.04.008

    DO - 10.1016/j.apacoust.2014.04.008

    M3 - Article

    VL - 85

    SP - 150

    EP - 160

    JO - Applied Acoustics

    JF - Applied Acoustics

    SN - 0003-682X

    ER -