SERVOHYDRAULIC MACHINE MFIB AND UFIB-1000-MD58 FOR FATIGUE BENDING TESTS
For static and dynamic tests fully automatic, closed loop servo control and computer governed.
SPECIFICATIONS
- Load capacity: +/- 1000 kN
- Strength measure precision: Class 1 according to ISO 7500.
- Strength measure range: 20 and 1000 kN.
- For testing according to PNE 14587
- Free distance between columns: 620 x 520 mm.
- Columns diameter: 130 mm
- Free distance between gripping heads: 750 mm
- Piston stroke: + 125 mm (250 mm total)
- Fixed (Model FMIB) or Mobile (Model UFIB) superior crosshead
- Aprox weight: 6.500 kg.
- Foundation: Armed foundation required for the machine fixing.
- Servocontrol: strength or displacement, selectable by the user (adjustable amplitude in kN or mm). Optional, deformation control.
- Type of selectable waves: increase, sinus, triangle, square.
- Dynamic answer warranted at maximum load 1000kN – 10 Hz +/- 1 mm
UFIB FRAME FOR FATIGUE TESTS Designed to carry out dynamic bending tests on railways (samples or finished products) using the appropriate devices for each application.
MFIB: High stiffness frame, 4 columns, with fixed upper crosshead.
UFIB: High stiffness frame, 4 columns, with mobile upper crosshead. Equipped with hydraulic lateral jaws and fixtures for moving the superior crosshead.
Base in steel,1000x1300 mm, working table provided with 6 grooves (T-shape) for rapid mounting of the testing devices.
On the superior rod, serial mounted with the two points bending punch, is placed the fatigue load cell tension/compression +/- 1000 kN capacity.
The test frame has been designed in order to obtain stiffness higher than 1500 kN/mm, verifying that the security margin, regarding bending, is 4 times higher to the Euler critical load.
MFIB: High stiffness frame, 4 columns, with fixed upper crosshead.
UFIB: High stiffness frame, 4 columns, with mobile upper crosshead. Equipped with hydraulic lateral jaws and fixtures for moving the superior crosshead.
Base in steel,1000x1300 mm, working table provided with 6 grooves (T-shape) for rapid mounting of the testing devices.
On the superior rod, serial mounted with the two points bending punch, is placed the fatigue load cell tension/compression +/- 1000 kN capacity.
The test frame has been designed in order to obtain stiffness higher than 1500 kN/mm, verifying that the security margin, regarding bending, is 4 times higher to the Euler critical load.
SEMI-HYDROSTATIC SERVO CYLINDER
- High response servo valve MOOG with 400 l/m work flow.
- High and low pressure accumulators to improve the response of the system.
- Power: +/-15 Vdc.
- Control signal: +/-10 Vdc.
- Double effect, double shaft and symmetric chambers.
- Small chamber always pressurized.
- Flow volume controlled in the big chamber.
- At 210 bars the max dynamic capacity is 1000 kN.
- Designed for fatigue tests.
- Low friction with hydraulic compensation bearings, joints and permanent lubrication.
- Chromed housing.
- Piston with low friction joints.
- Magnetostrictive position transducer (without contact) placed inside the shaft. SSI protocol, resolution 0,0001 mm.
- Screwed shaft for direct device mounting.
FATIGUE LOAD CELL, 1000 kN CAPACITY Extremely resistant to non axial loads.
- Output +/-4 mV/V
- Repeatability: +/-0,05%
- Non linearity: +/-0,2%
- Hysteresis: +/-0,2%
- Zero balance: +/-1,0%
- Nominal bridge balance: 350 Ohm
- Temperature compensation from + 21 to + 77 ºC
- Temperature range: -54 to +93º C
- Temperature effect in the output: +/- 0,0054%
- Estimated durability (from 0 to 100% load): 100 million cycles.
MAGNETOESTRICTIVE TRANSDUCER Allows displacement servo control
- Maximum stroke: 250 mm (+ 125 mm)
- Resolution: 0,001 mm.
- Linearity: + 0,05% end of scale.
- Repeatability: + 0,01% end of scale
- Hysteresis: < 0,07 mm.
- Temperature range: from -10º C a +70º C.
- Estimated life: higher than 4 mill hours.
SEMI-HYDROSTATIC SERVO CYLINDER
- Max work flow: 300 l/min
- Provided with two motor pumps: 150 kW. Variable work flow
- Designed to work at 280 bar of continuous nominal pressure
- Tank capacity:: 1000 litres.
- Pressure filter: 3 µ, low load lost.
- Return filter: 120 µ.
- Filter alarms (2), max oil temperature and tank level. Additional alarm for over pressures
- Synchronic pump start with unique control valve, to warrant same work load in both pumps.
- Refrigeration by means of oil/cooled water system.
- High pressure on line accumulator to protect weak devices of the hydraulic circuit.
- Total power: 175 kW aprox.
- Aprox weight: 1.800 kg
CONTROL AND DATA ADQUISITION SYSTEM MD58 See particular technical specifications in MD Series brochure.
SOFTWARE, FOR STATIC TEST UNDER WINDOWS, WINTEST.DW See particular technical specifications in WINTEST Brochure.
TELEDIAGNOSIS SYSTEM Only for pc controlled IBERTEST machines
Allows a direct links between the machine (any place with phone connection) and the Technical service of IBERTEST.
With this link the Post sale service of IBERTEST could easily diagnose and, most of times correct, the failures detected in the software without the need of a technical displacement.
Allows a direct links between the machine (any place with phone connection) and the Technical service of IBERTEST.
With this link the Post sale service of IBERTEST could easily diagnose and, most of times correct, the failures detected in the software without the need of a technical displacement.