Test lab for Structural Durability

The aim is to experimentally estimate material strengths and component service lives. For the latter in particular, operating loads must be simulated as realistically as possible on test machines. Depending on the application, material specimens or components must be tested. Do you have a fatigue strength problem? Don't hesitate to contact us.

Fatigue data can be determined for materials or components. The load situation ranges from single-channel to multi-channel loads. Tests can be carried out under standard conditions, at high or low temperatures, and under the influence of corrosive media.

Je nach Anwendung kommen verschiedene Prüftechniken zum Einsatz, z.B. servohydraulische Prüfstände und Resonanzprüfstände. Es können ganze Bauteile oder auch kleinste Proben geprüft werden. Die Probenentnahme und –herstellung sowie der Vorrichtungsbau kann dabei im eigenen Haus erfolgen. Folgende Prüfmöglichkeiten stehen am IMAB zur Verfügung:

Depending on the application, various testing techniques are used, e.g., servo-hydraulic test machines and resonance test machines. Entire components or even the smallest samples can be tested. Sample extraction and preparation as well as fixture construction can be carried out in-house. The following testing options are available at the IMAB:

Fatigue strength tests with constant amplitudes
Tests can be performed with loads of up to 250 kN and test frequencies of up to 250 Hz. For example, the high cycle and very high cycle fatigue of unnotched and notched specimens can be determined in accordance with DIN 50100. It is also possible to determine the entire S-N-curve. In addition to the fatigue strength tests, it is also possible to carry out tensile tests in-house in accordance with DIN EN ISO 6892 and notch-bar impact tests in accordance with DIN EN ISO 148.

Fatigue strength tests with variable amplitudes
We don't shy away from more complex stress situations either. We can perform fatigue tests with specified load sets or load sequences on samples and components, as well as multi-channel tests. If you have a fatigue problem that you can't seem to solve, you've come to the right place.

LCF tests
There are several servo-hydraulic test machines equipped with a strain gauge, enabling strain-controlled tests to be carried out. Among other things, the strain-stress curve and the cyclic stress-strain curve can be recorded.

Rotating bending tests
Two rotating bending test machines can be used to perform fatigue tests on small specimens. In particular, fatigue strength and notch effects can be determined in accordance with EN 13261.

Strain gauge measurements
Thanks to our extensive equipment, strain measurements can be carried out using resistance strain gauges in the laboratory and in the field.

Residual stress measurements
Residual stress measurements can be carried out using the borehole method.