résistance à la traction
- Domaine
-
- physiquerésistance des matériaux
- Date
Définitions :
Tension maximale que peut supporter un matériau avant de se rompre.
C'est le quotient de la charge maximale enregistrée lors de la traction d'une éprouvette par la section initiale de cette éprouvette.
Note :
La résistance à la traction du bois est élevée dans le sens du fil, et faible en travers du fil.
Termes :
- résistance à la traction n. f.
- résistance à la tension n. f.
Traductions
-
anglais
Date :Définition
The maximum tensile stress which a material can take before breaking.
Notes :
In wood, tensile strength is high along the grain, low across the grain.
The maximum tensile of a material will be high if it hardens rapidly as deformation occurs; in the case of ductile metals the tensile strength is usually greater than the breaking strength, but it always below the maximum true stress developed in the material; there is a definite relation between the hardness and the tensile strength of steels.
When under load, a material will stretch (yield); as the load is increased the material will eventually break, the tensile strength being the amount of load at the time of rupture. Some metal and single crystals (whiskers) have tensile strengths running into the millions; plastics; vulcanized rubber, and other elastomeric materials have tensile strengths ranging from about 5000 psi for carbon-reinforced cured rubber to 30,000 psi for nylon. In the textile industry, the analogous term tenacity is often used, expressed as gran per denier.Termes :
- tensile strength
- ultimate tensile strength