Multi-sine test

Description

The multi-sine test is a further development of the sine sweep test, in which several sine sweeps (components) pass through the frequency band simultaneously. The individual sine sweeps can have different profiles or amplitudes.

Picture on the right: Real multi-sine test with three simultaneous sine sweeps (recognizable by the crosses)

1. Sweep: 80-234 Hz
2. Sweep: 234-685 Hz
3. Sweep: 685-2000 Hz

Application using the example of automotive engineering

The multi-sine test is used in particular for products with several natural frequencies. The natural frequencies can be tested simultaneously to demonstrate fatigue strength. This can significantly reduce the test duration compared to sine sweep testing, in which the natural frequencies are excited one after the other.