torsional pendulum

torsional pendulum

[′tȯr·shən·əl ′pen·jə·ləm]
(mechanics)
A device consisting of a disk or other body of large moment of inertia mounted on one end of a torsionally flexible elastic rod whose other end is held fixed; if the disk is twisted and released, it will undergo simple harmonic motion, provided the torque in the rod is proportional to the angle of twist. Also known as torsion pendulum.
References in periodicals archive ?
The torsional pendulum set-up consisted of an ATM 3 apparatus (Myrenne, Germany) and was applied in the temperature range of 95-443 K under nitrogen.
The modulus monitored by the torsional pendulum at temperatures beyond the [T.
1]), and with torsional pendulum (DMA) using the maximum of G" at [nu] = 1 Hz.
This paper describes the results of dynamic-mechanical investigations of a series of PLCs and conventional polymers performed with a torsional pendulum working at a constant frequency of 1 Hz in a temperature range from -150 [degrees] C to 300 [degrees] C.
A torsional pendulum experiment, however, provides only a limited ability to vary the frequency; the experiments are often carried out at 1 Hz, constantly, which is a condition not far from the equilibrium situation.
All measurements were carried out with an ATM 3 torsional pendulum system Fa.
In these cases, test bars for tensile and torsional pendulum tests were punched from the plates.
The dynamic mechanical properties were studied using an automatic torsional pendulum from Brabender.
Results from DSC and torsional pendulum measurements showed that the glass-transition temperature of polypropylene in the blends decreased with decreasing concentration of polypropylene.
The elastic part of the shear modulus for the different blends at 20 [degrees] C, as determined by torsional pendulum measurements, is plotted in Fig.
They were taken instead from the temperature of the tan[Delta] peak obtained by torsional pendulum analysis, as illustrated by the results obtained with Blend 4 [ILLUSTRATION FOR FIGURE 9 OMITTED].