ISO INTERNATIONAL STANDARD 9052-1 First edition 1989-02-15 Acoustics - Determination of dynamic stiffness Part 1 : Materials used under floating floors in dwelings Acoustique -- Détermination de la raideur dynamique - Partie 1 : Materiaux utilises sous les dalles flottantes dans les batiments d'habitation Reference number ISO 9052-1 : 1989 (E) Copyright International Organization for Standardization Not for Resale d without license from IHS ISO 9052-1 : 1989 (E) Foreword iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (iSsO member bodies). The work of preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with isO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting International Standard ISO 9052-1 was prepared by Technical Committee ISO/TC 43, Acoustics. Iso 9052 will consist of the following parts, under the general title Acoustics - Deter- mination of dynamic stiffness: Part 1: Materials used under floating floors in dwellings 一 Part 2: Materials used for vibration and sound insulation of equipment in buildings @International Organization for Standardization, 1989 Printed in Switzerland ted without license from IHS Not for Resale INTERNATIONAL STANDARD ISO 9052-1 : 1989 (E) Acoustics - Determination of dynamic stiffness Part 1: Materials used under floating floors in dwellings Scope of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. This part of ISO 9052 specifies the test method for determining the dynamic stiffness of resient materials used under floating ISo 7626-2 : --2), Vibration and shock - Experimental deter- foors. Dynamic stiffness is one of the parameters that deter- mination of mechanical mobility -Part2:Measurements mine the sound insulation of such floors in dwellings. using single-point translation excitation with an attached vibra- tion exciter. This part of 1So 9052 applies to the determination of dynamic ISO 9053 : _2), Acoustics - Materials for acoustical appli- stiffness per unit area of resilient materials with smooth sur- faces (see clause 6) used in a continuous layer under floating cations - Determination of airflow resistance. floors in dwellings. It does not apply to loadings lower than 0,4 kPa1), for example materials in wall linings, or greater than 4 kPal), for example materials under machinery foundations Definitions 3 (see note 2). 3.1 dynamic stiffness: The ratio of dynamic force to This part of 1sO 9052 is mainly intended to be used for compar- dynamic displacement. ing production samples of similar materials of known specified quality. For the purposes of this part of ISO 9052, dynamic stiffness per unit area, s', is used and is given by the following equation: For restrictions concerning the airflow resistivity of the resilient material to be tested, see 8.2. F/S s"= .. . (1) Ad NOTES 1 The dependence of dynamic stiffness on prestatic load is of minor where importance in the case of materials usually applied in wall linings, for example polystyrene or mineral fibre. The differences between S is the area of the test specimen; dynamic stiffness values measured with a static load of 2 kPa in ac- cordance with this part of Iso 9052 and those measured with a very F is the dynamic force acting perpendicula