QUASI-STATIC & FATIGUE
This test rig consists of two torque motors arranged in opposition to each other. Their bedplate provides for joint angulation at either end.
Quasi-Static mode – The orientations of speed and torque are fully programmable. The specimen can be rotated clockwise or counterclockwise while simultaneously applying torque in either direction (4-quadrant operation). Tests run in this mode consist of medium to high torque levels run at lower rotating speeds.
Typical Quasi-Static tests include:
- High Torque / High Joint Angle – at low speed
- Pull-Out (dynamic self-disassembly)
- Rotating Torsion Fatigue
Fatigue mode – One end of the specimen is fixed while the opposite end is rotated. Typical Fatigue tests include:
- Torsional Fatigue
- Dual-specimen Torsional Fatigue (two specimens tested simultaneously – like two independent Fatigue test rigs)
- Static Torsion Strength (Ultimate Torsion / JAEL)
- Torsion Impact
Many waveforms in both speed and torque can be programmed such as, the balanced sine, offset sine, square, triangle and linear ramp. Real Time profiles can be recreated from road load data, including impact torques. In addition, there is a block programmer that can combine the above wave forms into one profile.
Standard performance parameters:
- Torques up to 11000 Nm
- Spinning speeds up to 600 rpm when used as Quasi-static
- Sine frequencies up to 20 Hz when working as Fatigue
- Angular velocities up to 3600 deg/s