Mechanical Analysis

The following section introduces some of the methods we apply for mechanical analysis. It also features their principle of operation and some typical applications.

Tensile Test

  • In a tensile test (destructive testing), modulus and elongation of a sample is measured as a function of tensile strain. The measurement can also be done in a predefined temperature range (-35 to +250°C).
  • Areas of Application: Determination of modulus of elasticity, tensile strength, elongation at fracture

Bending Test

  • In a three point bending test a material is measured under quasi-static conditions. The sample is fixed on two bearings and probed in the middle by an indenter.
  • Areas of Application: secant modulus, bending strength etc.

Impact Test

  • The resistance of a material against dynamic stress is measured with a notch impact test. The sample can be notched prior to testing. A swing hammer with a certain kinetic energy hits the sample on its back side and breaks it. This testing can also be carried out at various temperatures.
  • Areas of Application: Impact resistance, notch toughness and brittleness.

 Surface Roughness

  • Using a Perthometer, the sample surface is scanned by a needle of defined geometry, enabling the calculation of defined surface roughness parameters.
  • Areas of application: Surface profile, corrugation and roughness, bearing ratio, peak-to-valley height,

 Measurement of Hardness

  • The hardness describes the mechanical resistance against deformation when a harder test specimen is intended under a given load. Different measurement methods are applied, depending on the measured material.
  • Areas of Application: Vickers hardness and Rockwell hardness for metals, Shore hardness for elastomers.