Tests multiaxiaux

Le besoin d’essais multi-axes plus réalistes

Lorsque la rupture de matériaux ou de composants ne peut être prédite par des essais uniaxiaux simples, les essais multi-axes ou multi-modes permettent de simuler des conditions d’utilisation plus réalistes. Testing is performed under axial-torsion,  planar-biaxial or axial-shear loading, to more complex three and four axis loading that includes torsion, bending, shear and pulsatile forces to address the nuances of combined states-of-stress that are typically seen in real life conditions.  Multiaxial testing is often performed as the final test scenario for critical use situations in medical, auto and aerospace applications.

Multiaxial testing also serves to validate finite element modeling often created from uniaxial material test data.  Oftentimes, modeling alone cannot predict the true interaction of material behavior if it relies solely on simple uniaxial material mechanical properties.  Additionally, many regulatory entities responsible for the safety and efficacy of products, such as the medical and transportation industries, have stringent expectations to perform such multiaxial tests.

Des capacités polyvalentes pour une grande variété d’applications

ElectroForce® test instruments are configurable to meet many specific multiaxial testing needs.  Whether it is to perform  biaxial tests of pericardium, or to understand the biomechanics of spinal disk implants and peripheral stents, or to evaluate the tribological properties of dental materials, ElectroForce instruments provide a versatile alternative to traditional technologies.

D’autres applications peuvent être l’évaluation du couple d’insertion et des performances de coupe des vis à os utilisées en orthopédie, ou des essais maxillofaciaux souvent réalisés à faibles niveaux de charge et de couple.