Mechanics & Industry
Volume 20, Number 1, 2019
|Number of page(s)||11|
|Published online||08 February 2019|
Linearity investigation from a vibratory fatigue bench
Normandie Université, LMN/INSA Rouen Normandie, France
2 INSA Centre Val de Loire, UT, UO, Laboratoire de Mécanique G. Lamé, France
* e-mail: firstname.lastname@example.org
Accepted: 24 November 2018
High-cycle fatigue behaviour of structures can be obtained through vibratory tests using frequency response functions or transmissibilities. To this end, this study deals with the qualification of the vibratory fatigue bench developed at the Laboratory of Mechanic of Normandy. This bench uses an electrodynamic shaker which can reach excitation frequencies that are higher than conventional fatigue machines. To carry out relevant tests, the capacities of the test bench must be well known. Correlations between excitation and response were investigated to determine the allowable setpoints to maintain linearity between the input and output signals to validate our system. The difficulties related to the experiments were presented and discussed.
Key words: Vibratory fatigue test / instrumentation / vibratory bench capability / linearity of the system
© AFM, EDP Sciences 2019
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