ILO Home
Go to the home page
Site map | Contact us Franšais | Espa˝ol

CISDOC database

Document ID (ISN)37814
CIS number 82-954
ISSN - Serial title 0002-8894 - American Industrial Hygiene Association Journal
Year 1982
Convention or series no.
Author(s) Smith C.R., Broughton R.M., Wilmoth J.N., Borton T.E.
Title Physical characteristics and attenuation of foam earplugs
Bibliographic information Jan. 1982, Vol.43, No.1, p.31-38. Illus. 12 ref.
Abstract The attenuation of noise was evaluated for 5 types of foam earplugs in relation to their physical characteristics of size, weight, density, composition and solubility. All the earplugs had similar physical characteristics; frequency was the most important variable in determining attenuation. The earplugs evaluated provided essentially the same attenuation at frequencies ≥500Hz, but one non-commercial experimental plug provided significantly more attenuation at 125Hz than the others. Considerable attenuation differences were found between chlorinated (PVC) and unchlorinated earplugs. No consistent effects of physical properties on attenuation were found.
Descriptors (primary) hearing protection; earplugs; expanded plastics
Descriptors (secondary) sound attenuation; evaluation of equipment
Document type D - Periodical articles
Subject(s) Noise, hearing and vibration
Broad subject area(s)
Browse category(ies) Hearing protection