A Discussion of the Acoustical Properties of Fiberglas

The wide range and controllable properties of Fiberglas thermal insulating materials when used as absorbents of airborne sounds are discussed. Tables of sound absorption coefficients are given for 6 frequencies from 128 to 4096 cps and for 24 different combinations, weights, and thicknesses of materials. Curves are shown analyzing the relative absorption at different frequencies of the different materials based on density, thickness, and fiber size. — Sound isolation blankets made of a newly developed superfine glass fiber show remarkable acoustical efficiency when used for aircraft sound insulations. Their potential application to other uses when materials and research facilities are available is discussed. Some data are also given evaluating the influence of surface treatments and enclosing materials and methods. — The paper is a compilation and analysis of available data but does not represent a complete evaluation since much further work is needed as a result of properties discovered in war applications.

Print ISSN

0097-5834

Published

1946-01

Content type

Original Research

DOI

10.5594/J11866