PSI - Issue 77

L.M. Sauer et al. / Procedia Structural Integrity 77 (2026) 34–40 Author name / Structural Integrity Procedia 00 (2026) 000–000

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Fig. 1 . Geometry of the fatigue specimen and the extraction area from the component manufactured by full-forward rod extrusion (all dimensions in mm), Lingnau (2024).

2.2. Experimental procedures The fatigue tests were performed using an Instron 8872 servohydraulic testing system with a maximum load of 10 kN. The tests were conducted under stress-controlled uniaxial loading with a stress ratio of R = -1 and a test frequency of f = 1 Hz. A complex in-situ experimental measurement setup was used during the tests for the combined measurement of electrical resistance, the length and diameter and the temperature of the specimen. The setup ( Fig. 2 ) is explained in the following.

Fig. 2 . Experimental setup for the electrical resistance measurement with the voltage measurement via extensometer.