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Article | REF: P1310 V1

Internal friction measurement

Authors: Juan-Jorge MARTINEZ-VEGA, André RIVIERE

Publication date: March 10, 2000

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3. Internal friction peak

The relationship between stress σ* and strain ε* is written :

ε * (t ) = J* (ω ) σ* (τ )
or ε*(t ) = [ J ' (ω ) – iJ '' ( ω )]σ* (t )

where J ' is real dynamic complacency and J '' is imaginary dynamic complacency.

The dynamic response of the material is defined in the Zener model by the equations :

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