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1. Dissipation mechanisms and properties
In this paragraph, we consider a system materialized by a viscoelastic sample on which a mass M is suspended, in two possible sample test configurations, namely tension-compression (figure 1 a) and shear (figure 1 b).
A viscoelastic is characterized by high elasticity properties, but, compared to a perfect spring, it has energy dissipation properties.
Assuming the material is non-dissipative, it will behave like an elastic, linear spring. By compressing it (figure 1 a), the stress σ will be proportional to the rate of displacement ε = ΔL/L according to the material's coefficient of rigidity in tension-compression, i.e. Young's modulus,...
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Dissipation mechanisms and properties
Simple rheological models
Viscoelastic materials have many applications in various fields; examples are shown in figure 1 .
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Standardization
Current standards for materials testing
- Standard test methods for rubber deterioration-Dynamic fatigue - ASTM D430-06 - (2000)
- Standard test method for measuring vibration-damping properties of materials, American Society for Testing and Materials - ASTM E756-05 - (2005)
- Method for graphical presentation of the complex modulus of damping materials, UK - BS 7544 - (1991)
- Determination of the...
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