The crankshaft is a core component of today's internal combustion engines and during operation is subject to complex mechanical loading. The transition radii of the crankpins to the crankwebs and the outlets of the oil ducts for lubricating the crankshaft journals and pins are the points that are susceptible to fatigue fractures. For this reason, sometimes expensive surface strengthening measures are integrated in the production process.
In order to enable fatigue strength testing of crankshafts with loading that is as realistic as possible, IABG has developed a new crankshaft testing concept with patent pending. This new concept achieves significantly more realistic loading of test items than the standard bending and torsion test methods for parts.
The crankshaft is set up on a true-to-original bearing and tested crank for crank with a resonance pulser (forces of up to 400 kN) or hydraulic pulser (forces > 400 kN).