An apparatus for measuring the dynamic stiffness of acoustical materials

Authors

  • W.T. Chu Inst. for Res. in Construction, Nat. Res. Council Canada, Ottawa, Ont., Canada

Keywords:

elastic moduli measurement, nondestructive testing, impact-noise isolation, airborne sound transmission, structural floor, floating floor, hard rigid floating slab, resilient layer, ISO/DIS 9052-1, dynamic stiffness, shaker, impact hammer

Abstract

A common practice to improve both the impact-noise isolation and the airborne sound transmission of a structural floor is to add a floating floor. It consists of a hard rigid floating slab supported on a resilient layer that dynamically decouples it from the structural slab. The impact-noise isolation of certain types of floating floors have been investigated by Cremer (1952) and Ver (1971). One of the parameters that determines the performance of these floors is the dynamic stiffness of the resilient material used. A draft international standard, ISO/DIS 9052-1, exists that specifies a procedure for measuring the dynamic stiffness of the resilient material. This drift standard allows measurements to be made either with a shaker or an impact hammer. A description of the test methods is presented together with a comparison of the results obtained by both methods

Published

1993-09-01

How to Cite

1.
Chu W. An apparatus for measuring the dynamic stiffness of acoustical materials. Canadian Acoustics [Internet]. 1993Sep.1 [cited 2021Apr.14];21(3):75-8. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/782

Issue

Section

Proceedings of the Acoustics Week in Canada