Automatic Computerized 1200kN Tensile Testing Machine
The heavy-duty four columns 1200kN C0822 Tensile Testing Machine is a high-precision and reliable system which adopts HPU200 hydraulic servo-controlled technology, computer-based data acquisition and processing, and fully automatic closed-loop PID control. It is used for tests onto steel products such as rebars, flats, wire strands, nuts and bolts, electro-welded nets, and is ideal for high volumes of samples and intense operational conditions typical of steel and construction industry.
The 1200kN Tensile Testing Machine provides a high test throughput with reliable results, improving efficiency in the laboratory. Thanks to its flexibility, this system is able to cover the following applications:
– Steel:
- Tensile tests onto steel round up to 40mm in diameter (up to 50mm with optional accessory).
- Tensile tests onto flat rebars up to 30mm in thickness and 90mm wide.
- Tensile tests onto wire strands 12.8mm and 15.2mm in diameter (with optional accessory).
- Tensile tests onto nuts and bolts according to EN 898-1 (with optional accessory).
- Node shear test onto electro-welded nets according to UNI EN 15630-2.
– Concrete, cement and masonry units (with second frame controlled by HPU200):
- Compression tests on concrete cubes and cylinders.
- Compression on masonry units and concrete blocks.
- Splitting on concrete products and bricks.
- Flexural tests onto concrete beams.
- Modulus of Elasticity on concrete cylinders (with dedicated software).
- Displacement-controlled tests on fibre-reinforced concrete.
Loading frame
The frame consists of a robust four-column structure with a lower fixed and an upper mobile crosshead. The upper crosshead can be positioned at three different heights, to test a wide range of specimen lengths. Crosshead positioning is done by employing piston stroke and column spacers, which come with machine. The crossbar is locked and unlocked onto grooves on two guiding columns via manageable half rings.
The frame is characterized by upper and lower tensile jaws which can be independently controlled with a handy keyboard, for easier sample positioning. Each grip is moved through a dedicated piston, which acts in the same direction of the grip itself, in order to minimize undesired lateral stresses. Synchronization between pairs of grips is ensured by connecting metallic plates, so that should one piston malfunction, symmetric gripping on the specimen would still be guaranteed.
Three sets of grips are included, for round specimens up to 40mm in diameter and flats up to 30mm in thickness. The grips have handles and can be frontally inserted into the tensile jaws; they are then locked in place using a knob, without need for complex manual operations.
A highly precise magneto-strictive displacement transducer reads piston travel, to have a measure of crosshead displacement, and a limit switch prevents the piston from stroke overrun and automatically shuts off the hydraulic system once triggered.
The machine also comes with a support plate which is used to position a load cell in case of periodical calibrations of the system.
Power and control console – HPU 200
The well-known and reliable control console HPU 200 features space-saving ergonomic design with small footprint and houses the hydraulic power unit, the electronic system and the PC to manage all the control functions. Automatically performs steel tensile testing, compression, flexural and splitting tests onto cement, concrete and other products.
PC and software Ultimate Tensile Strength and Datamanager enable remote control of the system, simplifying test set up and execution and allowing to automatically produce test reports. For further information please consult Software and Technical Specifications sections.
Safety features
- Pressure valve which automatically stops operations when oil pressure approaches operational limits.
- Maximum travel limit switch which automatically shuts down hydraulic system when piston reaches travel.
- Mechanical bumpers to avoid piston over-travel due to failure of long and high-strength specimens.
- Software automatically stops operation when maximum load is reached.
- Emergency stop button.
- Mechanical bumpers for energy absorption upon sample failure.
Ideal for steel and construction industry, suitable to perform tensile tests onto steel rounds and flats, wire strands, nuts and bolts, electro-welded nets, full range of accessories available.
Nominal capacity of 1200kN, to accommodate failure of high strength materials such as tempered steel.
Horizontal daylight of 710mm, to guarantee necessary operational space for sample positioning and handling.
Open structure without side panels, for maximum visibility during operation and accessibility before and after the test.
Rigid four column structure with large vertical clearance
Three selectable crossbar positions, for a minimum vertical daylight between jaws of respectively 155/280/490mm.
Simplified crossbar movement employing piston stroke. Positioning performed using two spacer columns (included) and locking on dedicated column grooves through handy half-rings.
Nominal piston stroke of 520mm, which combined with jaws’ length of 240mm allows to test samples up to 1400mm in length.
Five sets of grips, for round specimens 10/26mm, 28/40mm and 42/50mm (optional) in diameter, flat specimens 90x30mm (WxT), wire strands 15.2mm in diameter (optional).
Integrated magneto-strictive transducer to measure crosshead displacement.
High-precision load cell calibrated in Class 1 to EN ISO 7500-1.
Advanced safety system with limit switch for hydraulic system shutdown when maximum crossbar travel is reached, integrated mechanical bumpers for energy absorption upon sample failure.
PC controlled for completely automatic test execution.
Software packages included, Ultimate Tensile Strength and Datamanager for tests onto steel and other material, with automatic data collection and elaboration.
Management Software and Software Packages
C0822 Tensile Testing Machine is supplied complete with Real Time Management user interface environment allowing:
- Remote control of the complete system for automatic test execution: zeroing, test execution according to the selected test type, calculation of results, graphical and numerical management of results.
- Storage of single and multiple tests.
- Printing of customized test reports for both single and multiple tests.
- Real time and deferred management of tests data and results, either in numeric or in graphic format.
- Language selection (Latin characters only).
- Units selection.
The following Software packages are also included in the system:
UTS Software Specifically designed for tensile testing under load/stress control and crosshead separation control (by using the displacement transducer supplied with the machine), allowing:
- Simultaneous display of stress/time, stress/elongation %, elongation/time and stress/elongation.
- Possibility to overlap two elongation/stress graphs: one obtained with the included displacement transducer measuring crosshead separation travel and the other obtained with an optional extensometer.
- Elaboration of tension test results: tensile strength, yielding points, total and uniform elongation, elongation at break, elongation at maximum force, elastic modulus etcetera, all conforming to EN ISO 6892-1, EN 15630-1, EN 898-1 for steel rebars, flats, wire strands, nuts and bolts, electro-welded nets.
DATAMANAGER Software for compression, flexure and indirect tensile test on concrete, cement specimens and other construction materials. These tests can be performed with a second optional compression frame to be connected to console HPU200.
| CODES | C0822 | C0824 | C0822/FR |
| Nominal piston travel | 460 mm | 460 mm | 460 mm |
| Maximum piston travel | 520 mm | 520 mm | 520 mm |
| Grips for rounds (diameters) | 10/26 mm, 28/40mm, 42/50mm (opt.) | 10/26 mm, 28/40mm, 42/50mm (opt.) | 10/26 mm, 28/40mm, 42/50mm (opt.) |
| Grips for flats (W x T) | 90 x 30 mm | 90 x 30 mm | 90 x 30 mm |
| Grips for wire strands (diameter) | 12.8 and 15.2 mm (opt.) | 12.8 and 15.2 mm (opt.) | 12.8 and 15.2 mm (opt.) |
| Tensile jaws length | 240mm | 240mm | 240mm |
| Min. vertical daylight (L – M – H) | 155 – 280 – 490 mm | 155 – 280 – 490 mm | 155 – 280 – 490 mm |
| Max. vertical daylight (L – M – H) | 615 – 740 – 950 mm | 615 – 740 – 950 mm | 615 – 740 – 950 mm |
| Horizontal daylight | 710 mm | 710 mm | 710 mm |
| Max. piston speed | 500 mm/min | 500 mm/min | X |
| Load resolution | 0.01 kN | 0.01 kN | 0.01 kN |
| Crosshead displacement resolution | 0.01 mm | 0.01 mm | 0.01 mm |
| Machine Class 1 range | 120 – 1200 kN | 120 – 1200 kN | X |
| Frame size (W x D x H) | 775 x 1050 x 3530 mm | 775 x 1050 x 3530 mm | 775 x 1050 x 3530 mm |
| Maximum height (with extended piston) | 4050 mm | 4050 mm | 4050 mm |
| Frame weight | 4700 Kg | 4700 Kg | 4700 Kg |
| Console size (W x D x H) | 800 x 900 x 1550 mm | 800 x 900 x 1550 mm | X |
| Console weight | 180 Kg | 180 Kg | X |
| Magneto-strictive transducer included | Yes | Yes | Yes |
| Full system footprint area (W x D) | 1020 x 2070 mm approx. | 1020 x 2070 mm approx. | X |
| Power supply | 380V/50Hz/3Ph | 220V/60Hz/3Ph | X |
HPU200 POWER AND CONTROL CONSOLE
Hardware
- 131.000 points effective resolution.
- Control frequency 250 Hz.
- Sampling rate 500 Hz.
- Closed-loop P.I.D.control.
- 6 channels (one dedicated to crosshead displacement) to measure elongation/displacement/strain with potentiometric, conditioned LVDT and magneto-strictive transducers.
- 4 channels for strain measurements with strain gauges.
- 2 channels for load sensors: load cell and load cell/pressure transducer of possible second frame.
- Simple multi-sensors connection and calibration file selection.
Hydraulics
- Dual stage pump: centrifugal low pressure for fast approach (max. flow rate 9 l/min ) automatically switching to radial multi-piston high pressure (max. flow rate 3.2 l/min) for loading.
- Oil flow control by servo-controlled proportional valve.
- AC motor 3000 W.
- Maximum working pressure: 700 bar.
- Oil temperature controlled by air cooling system.
- Console cabinet lined with soundproofing material for operator’s comfort.
- Tank capacity: 30 liters.
Accessories
Extensometers
Connection to second frame
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