The testing system is also equipped with a high-temperature furnace (up to 1,250 °C) to allow for accurate simulation of temperatures in the drive unit operation. CIAM mainly uses the testing system for high cycle fatigue (HCF) tests.
In an HCF test, load cycles are only run in the linear-elastic range of the material. One key application is the determination of the fatigue limit of a material or component. The fatigue limit is usually determined using a Woehler curve (s/n curve), where various stress and strain amplitudes are applied to the specimen until it fails. The Woehler curve is determined using constant amplitudes; the Gassner curve is determined using variable amplitudes. These characteristic curves are also determined at various temperatures.