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Fatigue Testing Machines
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| APPLICATION & OPERATION |
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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 |
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 |
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TECHNICAL SPECIFICATION
| 01) Maximum bending moment |
Kg Cm |
200 |
| 02) Bending moment adjustable |
Kg Cm |
30-200 |
| 03) Ranges |
I-Kg Cm
II-Kg Cm |
30-100
100-200 |
| 04) Gripping dia of specimen |
mm |
12 |
| 05) Testing dia of specimen |
mm |
8 |
| 06) Rotating speed |
rpm |
4200 |
| 07)
Accuracy of applied bending moment |
|
± 1% |
| 08)
Digital counter No. of digits |
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8 |
| 09) Power required |
HP |
0.5 |
| 10) Main supply |
A.C. 3 ph |
440V,50 Hz |
| 11)
Overall size (approx.) |
mm |
1000 L,X,500W X 600 H |
| 12) Weight
(approx.) |
Kg |
100 |
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