A FORCED VIBRATION NON-RESONANT METHOD FOR THE DETERMINATION OF COMPLEX MODULUS IN THE AUDIO FREQUENCY RANGE

Authors
  1. Szabo, J.P.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
A forced-vibration, non-resonant method for the determination of the dynamic mechanical properties of elastomeric materials in the audio frequency range was developed and evaluated using a commercial damping material, Isodamp C-1002. Measurements of storage modulus and loss factor were made on the damping material using compressive and tensile excitation. The elastomer had a loss factor near 1.0 and a storage modulus which varied between 6 x E6 Pa and 3 x E8 Pa in the frequency range studied. For tensile excitation, the error in the calculated modulus was low up to the resonance frequency of the sample, usually approximately equals to 1700 Hz. For compressive excitation of thin sheets, the error was greatest at the low and high ends of the frequency range.
Report Number
DREA-TM-92-201 — Technical Memorandum
Date of publication
15 Jan 1992
Number of Pages
29
DSTKIM No
92-01095
CANDIS No
103986
Format(s):
Hardcopy;Originator's fiche received by DSIS

Permanent link

Document 1 of 1

Date modified: