Longterm material properties are especially for longlife membrane buildings an essential factor. Of particular importance are the decreasing pre-load stress or the strain change over time.
For that purpose the ELLF is providing long term tests with individuall test durations, where the creep and relaxation properties of your material can be determined.

The force is applied via a pulley system and the strain is measured contact-free via an optical measuring system.

The tests are carried out in accordance to the standard DIN EN ISO 899-1.

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Beispielhafte Auswertung und Gegenüberstellung dreier Kriechversuche mit einer Standzeit von 1000 Stunden
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