Faculty of Mechanical Engineering, Lj. (FSLJ)
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Vpliv frekvence zvoka na zvočno izolativnost določeno na nestandardnem preizkuševališču : zaključna naloga univerzitetnega študijskega programa I. stopnje StrojništvoKranjec, UrbanZvočno izolativnost po standardu ISO 10140 merimo pri vzbujanju z belim šumom. Hrup pa v realnih situacijah v vsakdanjem življenju ne vsebuje celotnega frekvenčnega spektra - izpostavljeni smo le ... določenem frekvenčnem območjem. Iz tega razloga se pojavlja vprašanje ali frekvenca oziroma frekvenčni spekter vira zvoka vpliva na izmerjeno zvočno izolativnost materialov. Meritve sem izvajal na nestandardnem preizkuševališču za merjenje zvočne izolativnosti v Centru za Eksperimentalno Mehaniko (CEM), ki posnema standardno meritev, vendar je izvedena v omejenem prostoru. Uporabil sem tri materiale, ki so se razlikovali v mehanskih lastnostih kot tudi v stukturi. Ugotovil sem, da frekvenca zvočnega valovanja, s katero vzbujamo vzorec, vpliva na izmerjeno zvočno izolativnost materiala pri merjenju na prej omenjenem preizkuševališču. Pri vzbujanju z nižjimi frekvencami zvoka (500 Hz) smo izmerili večjo zvočno izolativnost pri vseh treh materialih v primerjavi z zvočno izolativnostjo vzbujanju z belim šumom. Pri vzbujanju z višjimi frekvencami (1000 Hz in 5000 Hz) pa so se odstopanja rezultatov razlikovala in ni bilo mogoče povzeti določenega trenda.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [U. Kranjec], 2017Language - slovenianCOBISS.SI-ID - 15752987
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UN 0000000957 IN: 80000957 UN 957 IN: 80000957 |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Kranjec, Urban | |
Govekar, Edvard | 08782 |
Emri, Igor | 04316 |
Source: Personal bibliographies
and: SICRIS
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