Dynamic mechanical analysis stress-strain relationships

Viscoelastic behavior can be viewed as three fundamental modulus characteristics G orE =complex modulus, G or E = storage or dynamic modulus, and G" or E" = loss or viscous modulus. The moduli are related by the angle of phase lag 5 in stress-to-strain phase lag. They are derived from measurements of the complex modulus and phase angle 8 relationships of stress to strain, by dynamic mechanical analysis (DMA) using a Rheometric Solids Analyzer, RSA, supplied by TA Instruments [19]. Further information on loss modulus, storage modulus, and DMA is found in Chap. 2, Products and Designs, and Chap. 3, Properties. ... 

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