Rotating Fatigue Machine — MOE Lab Tender Details

Rotating Fatigue Machine

Demonstrates the failure of materials when subjected to a cyclic stress

Experiments
Low and high cycle fatigue
How to create and use Wohler (S-N) curves for various materials
Comparison of fatigue properties of various materials

Specifications
Works with a Versatile Data Acquisition System to allow monitoring of the experiment while unattended
A precision engineered base supports a motor that rotates a drive shaft and collet type chuck for gripping the specimen with uniform pressure around it’s circumference
An adjustable dead-weight loading device fitted into a loading arm mechanism applies a vertical load on the specimen using a self-aligning bearing inside a gimbal
A sensor counts the number of rotations of the specimen, maximum cycle count 9.99 x 108, with a resolution of one cycle
Standard cycle rate is 60 Hz
Variable speed drive 0-3600 rpm
Recommended typical test times from 17 seconds to 46 hours 18 minutes
A load cell measures the force applied to the specimen.
Maximum stress: 350 MPa
Motor to automatically shut down after specimen breaks
To include a separate control box containing a motor drive and digital display showing load, cycle rate and the number of rotations
To be supplied with 10x Steel and 10x Aluminium specimens; each specimen to be nominally 64 mm long, between 8.96 and 8.99 mm diameter, with a neck diameter between 3.95 mm and x 4.05 mm