Alternating Bending Fatigue Machine

Alternating Bending Fatigue Machine .

Description of Alternating Bending Fatigue Machine

The Alternating Bending Fatigue Machine is a further evolution of the popular Rotating fatigue Machine. Rather than rotating a specimen to fatigue failure, the Alternating Bending Fatigue Machine induces an alternating displacement to the free end of a cantilevered test specimen in order to fatigue fail the part. A heavy base plate houses the control box, motor, fluctuating components, test specimen and digital counter. All these parts are enclosed by a transparent safety guard, which ensures rotating components are kept away from the user but full view of parts and count is kept.

Experimental Capabilities of Alternating Bending Fatigue Machine

1. Bending fatigue of a cantilevered strip of metal or plastic in modes varying from alternating to fluctuating stresses
2. Reading and working with nomograms
3. Cantilever test specimens
4. Fatigue

Specification of Alternating Bending Fatigue Machine

1. To be a self-contained, bench-mounted machine for the imposition of an alternating displacement on the free end of a cantilever test specimen
2. Supplied with a rotating faceplate carrying an adjustable eccentric bearing driving a connecting rod attached to a cantilever
3. Rotational speeds can be either 5700 or 1425 rpm depending on gearing
4. Variable stress range
5. Includes dual micro switches to detect failure of the specimen and stop the motor
6. Guarded machine with a digital readout of revolutions to failure
7. The apparatus is mounted on a heavy base plate with rubber mounting feet
8. Specimens in the range of 100 mm in length, 5-10mm in width and up to 5mm in thickness in metal or plastic
9. Load hanger and calibrated weights set to provide counterbalance and restrict horizontal displacement during fluctuations