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Application & Operation
This machine is used to test the fatigue strength of
materials and to draw S-N diagram by research
institutes, laboratories, material manufacturers and
various industries. This is a rotating beam type machine
in which load is applied in reversed bending fashion.
The standard 8 mm dia specimen is held in special
holders at its ends and loaded such that it experiences
a uniform bending moment.
The specimen is rotated at 4200 rpm by a motor. A
complete cycle of reversed stresses in all fibres of the
specimen is produced during each revolution. The bending
moment is applied with a lever system and can be easily
changed by moving a weight over the lever. Total number
of revolutions at which the specimen fails are recorded
by a mechanical counter. An interlocking system puts off
the motor at specimen failure. Machine meets
requirements of IS 5075-1969
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Features :
• Light weight, compact size, simple design
• Table model, no need of foundation
• Simple lever system for changing load
• Accurately calibrated as per IS 5075
• Calibration in Nm available on request |
