Servo Controlled Endurance Testing Machine for Rubber Pads

Brand	Enkay Enterprises
Voltage	220 V
Frequency	50 Hz
Capacity	300 kN
Hydraulic Actuator	+-300kN
Load Cell	+-500kN
Displacement Transducer	+-100mm/200mm
Horizontal Clearance	450mm
Vertical Clearance	400mm
Testing Stroke Length	0-200mm

ENKAY Cyclic/Static Rubber pad testing machines are state of the art machines based on Servo Controlled Closed Loop system. All the controls and data acquisition is through the computer. The system has a wave generator, cyclic & static, which forms a base to the compound signal. This signal is sent to PID controller. The machine response signal through base sensors that is displacement/load is also passed on to the PID controller. The difference in two signals actuates the torque motor of the servo valve thereby ensuring that the machine system follows the set path of the wave generator. Dwell time loading –unloading and recording of the reading is controlled through the software supplied as standard along with the system. The machine is capable of conducting following tests on Elastomeric Pad and Silent Blocks.

Compressive Load Deflection Characteristic Test (As Per Clause 3.4.3 of RDSO Specifications)
Test Condition: - The system loads the pad from 0-20Tons three times at Strain rate of 10+5 mm/min. and then in the 4th cycle, it records Load versus Deformation Characteristics. Deflection characteristics are recorded and printed at Loads of 10, 15 and 20Tons.

Shear Load Deflection Test (As Per Clause 3.4.4 of RDSO Specifications)
Test Condition: - Refer to RDSO sketch No.WD2-7561-Ss/1, the system Loads the pad 3 times from 0-12Tonnes with the Strain rate of 10+ 5mm/min. and in the 4th cycle holds the load at 12Tonnes. Then Horizontal Load of 5Tonnes is given at a Strain rate of 10+ 5mm/min. 3 times successively and in the 4th cycle records Load versus Deflection characteristics.

Shear Fatigue Test (As Per Clause 3.4.6 of RDSO Specifications)
Test Condition: - Sample is fixed at 10 degrees to the horizontal as per Drawing No.WDX-91/7Alt.1 and then loaded from 7-22Tonnes at a frequency of 2Hz for 5,00,000cycles. The system automatically adjusts any permanent deformation and keeps the load within the specified limits of 7-22Tonnes.

Compression Test- Applying a Load of 15Tons for three successive cycles and record the deformation in the fourth cycle.

Torsion Test- The inner shaft of sample is clamped in the fixture and apply a rotating load on outer body for three successive cycles up to 8° and record the data at every 0.5° in the fourth cycle.

Endurance/Fatigue Test- Apply a load of 5Tons-15Tons at a maximum frequency of 1-2Hz with a maximum deflection of 3mm for 2,50,000 cycles or more.