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Patricia KRAWCZAK: Doctor Engineer - Lecturer and researcher in the Polymer and Composite Technology Department at École des Mines de Douai
INTRODUCTION
This third article in the Mechanical Testing of Plastics series looks at :
mechanical spectroscopy tests, to determine the rheological properties of solid-state polymers under transient or harmonic loads. It should be noted that the viscoelastic physical characteristics (moduli, damping capacities) measured in this way are in the linear (elastic) domain, and not at fracture;
thermomechanical volume tests, the aim of which is to determine physical characteristics (coefficients of expansion) or technological characteristics (conventional temperatures), which estimate the influence of temperature on mechanical behavior;
mechanical surface tests, which characterize the surface condition of parts either in the low-strain range (hardness), or at fracture (wear and surface brittleness), or in terms of roughness.
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Mechanical testing of plastics
Determination of solid-state rheological properties
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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