1. Determination of solid-state rheological properties
Mechanical spectroscopy tests enable us to measure certain characteristics, under well-defined mechanical and thermal stress conditions, which constitute solutions of the material's equation of state. This equation is a differential equation with respect to time, characteristic of polymer viscoelasticity. In practice, we don't try to explain it in its general form; we are content with certain particular solutions, determined experimentally for various stress laws. Given the structure of this equation, the characteristics measured are always functions of the loading time.
The physical viscoelastic characteristics (or characteristic functions) are obtained for stresses of low amplitude (linearity) whose variation as a function of time t or frequency f constitutes a true thermomechanical or rheological spectrum, an image of the material's structure.
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Determination of solid-state rheological properties
Determination of thermomechanical volume characteristics
Bibliography
Manufacturers and suppliers of mechanical and thermomechanical testing equipment
Acal Auriema (Sté).
Adamel-Lhomargy/MTS Systems France.
Bareiss (distributed by Labomat Essor).
Ceast S.p.a. (distributed by MTS Systems).
Davenport; (distributed by Lloyd).
Deltalab (Company).
Dufour Père,...
Standardization
France: Association Française de Normalisation (AFNOR)
Metallurgy
- Revêtements métalliques. Essais de microdureté Vickers et Knoop. - NF A 91-118 - 10-81
Insulation
- Méthodes d'essai des matières isolantes. Méthode de mesure des coefficients de frottement des films et feuilles de matière plastique...
Standardization by test family
All the standards relating to the main families of thermomechanical test methods and specimen preparation are listed below, with the exception of those for reinforced plastics, which are covered in Doc. AM 5 405. The main French (NF), American (ASTM) and international (ISO) standards are listed. Please note that NF, ISO and ASTM standards for the same application are not necessarily identical in terms of...
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