Technical Glossary Loss factor(tanδ)

[Loss factor]

G"/G'- the ratio of the storage shear rate (G') and loss shear rate (G") is called the loss tangent (loss factor) and is expressed as tangent. It indicates how much energy is absorbed (changed into heat) by a material when it deforms.
G"/G'- the ratio of the storage shear rate (G') and loss shear rate (G") is called the loss tangent (loss factor) and is expressed as tangent. It indicates how much energy is absorbed (changed into heat) by a material when it deforms.
Larger values for tangent mean that more energy is absorbed. In a shock absorption test, the modulus of resilience will decrease; in an agitation test, resonance amplification will decrease.