RESONANT PLATES FOR A FATIGUE TEST BED OF SHAFTS THAT ARE SUBJECTED TO A BENDING AND TORSION LOAD.

摘要

According to the present invention, a shaft fatigue test bed is disclosed which comprises a support frame (1), a driving mechanism (2), resonance plates (3), a plate suspension mechanism (4, 5) and a control system whose resonance plates (3) include a substantially square-shaped upper end portion (3A), the bottom end portion thereof (3b) being diagonally projected downwardly so as to form a tapered end section (3c), said tapered end section having side walls (3D) which are exceeded in size by the front and rear surfaces thereof (3e) to define a substantially "I"-shaped end portion (3e) and a recessed section (3G) that is arranged about a central bore (3f) and a substantially flat surface (3h); a plurality of apertures (3I) extend through from the recessed section (3g) to the substantially flat surface (3H) in order to cause an induced moment of 1600 Nm by using a shaker of 2.9 kN at a working frequency value above 100 Hz.