Poisson’s ratio characterization
CEVAA performs the dynamic characterization of Poisson’s ratio and identifies the mechanical properties of a material.
Poisson’s ratio characterization
CEVAA carries out the dynamic characterization of the Poisson’s ratio of acoustic materials with a custom-built test bench.
Thus, our design office evaluates the deformation of a material in the direction perpendicular to the direction of the force. This data allows the characterization of the mechanical properties of the material whatever it may be: viscoelastic, plastic, EPDM, etc.
This new service offered by CEVAA makes it possible to supply calculation models with more precise material parameters. In addition, it makes dynamic simulations more representative of the real phenomenon.
It is thus possible to predict the vibro-acoustic behavior of systems incorporating viscoelastic polymers (or other materials).
Applications
- Characterization of Poisson’s ratio for boat engine fin
- Characterization of material in the automotive field for simulation
- Determination of deformation for floors (residential)
Associated services
- Characterization of damping
- Characterization of dynamic stiffness
- Measurement of Young’s and shear modulus
What is Poisson’s ratio?
The principal Poisson’s ratio makes it possible to characterize the contraction of the material perpendicular to the direction of the applied force. Its value is between 0 and 0.5 and is most often positive.
In certain cases, the material can undergo transverse expansion under longitudinal traction. The value of the coefficient will therefore be negative and can reach values up to -1. These materials are then called auxetic.
Materials characterization benches
Small cabin
Alpha Cabine
Impedance tubes
Oberst method
Dynamic stiffness bench
Squeak & Rattle Test Bench
Poisson's ratio characterization bench
Dynamic mechanical analysis (DMA)
For more information, contact us to discuss technically on your needs!