This method consists of the statistical prediction of high-frequency material damping, the numerical calculation of modal damping, and the conceptual modification of Rayleigh damping.
Machine design and high-frequency material properties influence the transient electrical behavior which is not only important for the design of the machine, but can also be exploited for sensorless control methods for induction machines.
It was found that the reflected power of an incident wave upon a simply supported boundary is independent of the small scale, incident wave frequency, material and geometrical parameters of the carbon nanotubes while the reflected power of a wave upon clamped and free boundary conditions depends on the small scale, incident wave frequency, material and geometrical parameters.
It includes general questions on occupational history with, for each job held, information on the company production and activities, a description of tasks performed (nature, frequency, material used) and a description of the work environment.
At THz frequencies, semiconductor materials have a much lower permittivity than metals, which can moreover be tuned by varying the doping concentration [ 12].
Therefore, the peak of the damping factor of frequency-dependent materials should not be located at the nutation frequency.
This novel technique is in general interesting for metrological purpose and remote sensing purposes, and can be effectively used in aerospace field for frequency selective materials design, in order to reduce the aircraft/spacecraft radar observability at certain frequencies.
The reflection losses decrease at higher frequencies since material impedance increases.
As a consequence, our results indicate that for the phonon frequencies, this material does not obey the Vegard rule.
Reduction in loss tangent was also observed for frequency sensitive materials in DMA tests.
It was concluded that the fatigue behavior is also time-dependent for frequency sensitive materials.
