Accession Number : AD0458902


Title :   AN IMPROVED VISCOELASTIC TORSION PENDULUM.


Descriptive Note : Technical note,


Corporate Author : ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD


Personal Author(s) : Goldberg, William


Report Date : Nov 1964


Pagination or Media Count : 31


Abstract : An apparatus is described for the measurement of the complex shear modulus of viscoelastic materials. The apparatus consists of a modified Nonius torsion pendulum driven in forced vibration by either a low frequency sinusoidal current or by a constant current source. The specimens tested may be either circular or rectangular in cross section. The frequency range of the apparatus is .001 to 3 cps. Calibration of the pendulum, reduction of the data, and examples of typical results are presented. (Author)


Descriptors :   *SOLID PROPELLANTS , VISCOELASTICITY , MEASUREMENT , LABORATORY EQUIPMENT , MECHANICAL PROPERTIES , HANDLING , MATHEMATICAL ANALYSIS , SHEAR STRESSES , ELASTIC PROPERTIES , CALIBRATION , VIBRATION


Distribution Statement : APPROVED FOR PUBLIC RELEASE