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A damping maximum in the free torsional oscillation of wool fibers
Author(s) -
Nordon P.
Publication year - 1963
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1963.070070131
Subject(s) - relative humidity , logarithmic decrement , wool , materials science , oscillation (cell signaling) , composite material , logarithm , constant (computer programming) , modulus , humidity , thermodynamics , physics , chemistry , vibration , mathematics , acoustics , mathematical analysis , biochemistry , computer science , programming language
A maximum in the damping of free torsional oscillations of wool fibers has been observed with changes in relative humidity at constant temperature. At relative humidities below that at which the maximum occurs, there is an increase in the logarithmic decrement as the temperature increases. At relative humidities larger than that of the maximum, however, an increase in temperature causes a decrease in the decrement. The implications of these observations on the complex elastic modulus are discussed.