Relaxation time is a general concept in physics for the characteristic time in which a system changes to an equilibrium condition from a non-equilibrium condition. It can measure the time-dependent response of a system to well-defined external stimuli.
The displacement will then be of the form . The constant T is called the relaxation time of the system and the constant μ is the quasi-frequency.
The relaxation time is related to the velocity of a body (typically a star) and the perturbation rate. In the example of a star cluster, a particular star will have an orbit with a velocity v. As the star passes by other stars, the orbit will be perturbed by the gravitational field of nearby stars. The relaxation time is similar to the ratio of the velocity to the time derivative of the perturbation.
Determination of relaxation time spectra by analytical inversion using a linear viscoelastic model with fractional derivatives.
Nov 15, 1995; INTRODUCTION The determination of the relaxation time spectrum from experimental data for a material function is one of the...
Melt spinning simulation from relaxation time spectrum.(Correlations Between Relaxation Time Spectrum and Melt Spinning Behavior of Polypropylene, part 2)
Mar 01, 1995; INTRODUCTION In the previous part of this work (1), it has been shown that the linear viscoelastic behavior of commercial...