Relaxation/Retardation/Creep/Creep recovery

The picture displays creep behaviour of a compression sample at 0 °C and at room temperature. The fast increase in force when setting up the load jump is characteristic for this mode. The high force reserve of our testers therefore enables relaxation/retardation examinations above and below the softening points of the testing materials.

Creep Recovery Experiments

The illustration shows the relaxation modulus of an elastomer at 0 °C (compression sample) in a creep recovery experiment (increase and decrease of load alternating by impulses). Characteristic for this deformation mode is the application of rectangular force or strain pulses with an extremely fast acceleration from the unloaded state to the target force or strain value (<0.2 sec.). The target or nominal value will be adjusted instantaneously with the aid of a newly developed control system (no overshooting). Creep recovery experiments enable a long-time prognosis of the ageing process of statically components.