Mobile-Menu

TESTING AND MEASURING Dynamic Mechanical Analysis by Rebound Resilience – Revisiting Rebound Resilience according to Schob

Von Jorge Lacayo-Pineda, Hannover, Thomas Rauschmann, Burg auf Fehmarn, Germany 1 min Lesedauer

The rebound resilience according to Schob is a widely used test method. It delivers information about hysteretic losses in a rubber sample. Its success is not only related to the simplicity of the experiment, but also to the characteristic contact times and the type of deformation similar to those observed in tireroad contact.

Deformation of the specimen as a function of time obtained from a stacked highspeed image of the impactor trajectory by fitting.(Bild:)
Deformation of the specimen as a function of time obtained from a stacked highspeed image of the impactor trajectory by fitting.
(Bild:)

Rebound resilience is the ratio of the energy returned to the energy applied by a single impact. This impact is performed as indentation by a spherical object attached to a pendulum. The test in general is described and standardized in ISO 4662 which considers two different types of device, the pendulum method and the tripsometer method.