Crack Detection In Rotating Shaft Kit

The crack influences the vibration behaviour of the shaft by changing its rigidity. Using suitable analysis software, this change can be registered and inspection of the machine organised in good time. In the experiment, the crack is simulated by an asymmetric flange joint. Cracks due to material fatigue are very dangerous for rotating machines. Early detection of any crack is therefore essential before permanent rupture and often fatal consequences can occur. The accessory set-up includes two shafts of different lengths: one short and one long. The short shaft simulates a protruding shaft end, and is loaded with the belt drive. Variable tightening of the flange bolts produces a temporary gaping of the butt joint, which closely approximates to the behaviour of a crack.

Investigation of the vibration behaviour of a cracked shaft
4 Different sized cracks can be simulated
Short shaft to simulate a protruding shaft end
Simulation of the crack by opening bolt joints
Accessory set-up for machinery diagnostic training system
Long shaft to simulate an elastic rotor
Crack adapter in flange form
Stackable box for all components.

Technical Data:
6 Hexagon flange bolts M8x20
Flange diameter: D=90mm
Shafts
Diameter: D=20mm
Long shaft: L=200mm
Short shaft: L=85mm
Max. Permissible bending torques
Long shaft for mass disk: 3,9Nm
Short shaft for belt pulley: 15,9Nm
Dimensions and Weight of Crack Detection in Rotating Shaft Kit
l x w x h: 600x400x120mm (box)
Weight: approx. 3kg.