A damping maximum in the free torsional oscillation of wool fibers

摘要

AbstractA 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.