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A compound pendulum for dynamic viscoelastic property measurements
Author(s) -
Rosenthal L. A.,
Ungermah A. J.
Publication year - 1962
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760020409
Subject(s) - viscoelasticity , materials science , elasticity (physics) , torsion pendulum clock , moduli , pendulum , dynamic modulus , composite material , dynamic mechanical analysis , modulus , young's modulus , mechanics , mechanical engineering , polymer , physics , engineering , quantum mechanics
Abstract A compound pendulum system has been developed for the measurement and study of the modulus of elasticity and internal damping properties of a viscoelastic specimen through a range of temperatures. An analysis of the apparatus and the essential describing equations are presented. Test results for several materials are presented. In the region of the heat distortion temperature many materials exhibit a sharp peak in their damping characteristics. The modulus of elasticity drops rapidly in this region. Modulus of elasticity results obtained compare favorably with static testing machine data. The compound pendulum system described provides a simple technique for these physical property determinations continuously over a range of temperatures.