Propagation of structure-borne sound in lightweight gypsum board walls

摘要: prEN ISO 10848 describes two different methods to measure the vibration reduction index Kij of junctions building elements. Both are applicable heavy, monolithic elements, but only indirect method that uses airborne sound seems be practical for lightweight, assembled like framed gypsum board walls, so far. In scope a current research project at Eindhoven University Technology adopt so-called direct is based on measurement structure-borne such kind basic carried out walls characterize propagation and dynamic response structures. Two in its geometry identical – first one with metal frame second wooden built stepwise also changes made structure determine way propagates this type elements as well find construction details have influence it. According frequency range techniques, experimental modal analysis, power balance measurements wave number measurements, been applied investigate behaviour itself material properties structures situ. The obtained knowledge will used an appropriate analytical model finally describe conditions application direct-method 10848.