General Description

Introduction This machine has been specifically designed to suit the requirements of Central and Commercial laboratories of the construction industry...
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Description

Introduction
This machine has been specifically designed to suit the requirements of Central and Commercial laboratories of the construction industry and Civil engineering in general. This universal tester, in fact, can be used for tensile tests on steel re-bars up to 40 mm dia., flats up to 35x75 mm,  and compression tests on standard concrete specimens. It can also be used, with the appropriate accessory, for transverse and bending test on steel, flexural tests on concrete beams and general compression tests. Specialò accessories are also available for testing steel strands and electro-welded steel  screen.
All the control functions are managed from a standard keyboard and mouse. The frame differ substantially from the old traditional models because of the originality of the design as for example the remote control displacements and gripping systems. The software include a complete suite of programs: tensile, bending, flexure  and compression tests.
Once the specimen has been placed in the machine (using accessories if required) and the specimen data introduced, the test is run completely automatically at the press of a button up to the printout of the test certificate and the storage of the test data.
 
Machine frame, cylinder assembly, load cell

  • Steel base with rigid frame housing the lower grippers
  • Piston/Cylinder assembly mounted on the top of the rigid frame. Load cell incorporated in the piston.
  • Mobile frame consisting of four high tensile strength columns, upper crosshead directly connected to the piston, intermediate crosshead with compression platen and lower crosshead housing the upper grippers.
  • Hydraulically operated gripping system and vertical adjustment by two independent auxiliary cylinders controlled by the push button panel. This unique feature make the machine extremely easy to operate enabling one man to perform the test in a very short time.
  • Crosshead displacement controlled by the use of a bi-directional encoder.

Control console

  • The lower section houses the hydraulic assembly which include: Hydraulic pump, Proportional valve, Hydraulic valves, Heat exchanger to control the oil temperature and the Oil tank.

Grippers

  • Three sets of standard grippers supplied with the machine, for rounds and flats, plus two sets of grip liners to provide maximum bearing and holding surface for specimens of all sizes.

Safety features

  • Pressure switch, which automatically stops the machine when the oil pressure goes over the maximum permitted level.
  • Max travel limit switch to stop the mobile frame at its upper position.
  • Software feature which stops the machine when the maximum load is reached.

Hardware
The upper section of the control console houses the electronic card for the control of all functions, having the following specifications:

  • A/D converter resolution 1/20000
  • No. 4 outputs for electrovalves
  • Analogical output for load and strain control:12 bit
  • Load cell input

Software
The machine can be used either in the manual or in the automatic mode to perform:

  • Tensile test on steel reinforcing bars conforming to EN 10002 and ASTM A370
  • Tensile tests in general, flexural (transverse) and bending test on steel conforming to ASTM E290,  UNI 564.
  • Flexural tests on concrete beams conforming to EN 12390-5
  • Compression tests on concrete specimens conforming to EN 12390-3

Standard outfit
The machine is supplied complete with:

  • No. 3 sets of grips for round specimens up to 40 mm dia. and flat specimens up to 70 mm wide and 35 mm thick and two sets of grip liners.
  • No. 1 set of foundation bolts, 1 service spanner, instruction manual, PC and colour graphic printer

Products

Code
Description
Units

Technical Specifications

Max. test load

  • In tension: 1000 kN
  • In compression: 2000 kN

Measurement load ranges :Automatic changeover of scale sensitivity, minimum reading value 100 N

Tensile test

  • Max. distance between grips: 700 mm
  • Gripping system: Hydraulic with remote control
  • Max. round dia.:  40 mm
  • Max. plate specimens size: 70x35 mm

Test speed: 0-100 mm/min
Crosshead adjustment speed: 500 mm/min
Max. piston stroke: 610 mm
Distance between columns: 330 mm

HPU 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 magnetostrictive 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
  • digital linearization of the calibration curve. (multi-coefficient)
     

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
     

MANAGEMENT SOFTWARE AND SOFTWARE PACKAGES 
The machine is supplied complete with RTM (Real Time Management) user interface environment allowing:

  • Remote control of the complete system for automatic test execution: quick platen approach, 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
  • Remote technical assistance/diagnostic via internet
     

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 w ith an optional extensometer (coaxial or universal);
    • Elaboration of tension test results: ReH, ReL or  Rp (calculated at three different elongation percentages selectable by the user), A, Ag, At, Agt, Ae, Rt, Z, elastic modulus E, etc, conforming to EN ISO 6892-1 and EN 15630-1 for steel rebars.
       
  • DATAMANAGER Software For compression, flexure and indirect tensile test on concrete, cement specimens and other construction materials allowing:
    • Real time monitoring of test data and stress/time graph
    • Automatic load detection failure and storage
    • Cement testing to EN 196-1 guided test procedure
    • Saving of batch file with automatic calculation of average and standard deviation


The following software package is available as option when upgrading the machine with the hydraulic system for a second frame connection (see 70-T10/2F).  

  • E-MODULE software For Poisson ratio and Elastic Modulus determination on concrete specimens allowing:
    • Free unlimited programmable load/stress cycles to fulfill any kind of test procedure
    • Real time monitoring of test data, stress/time, stress/axial strain, stress/lateral strain graphs
    • Automatic verification of sample centering and sensors functionality, as per Standard requirements
    • Automatic calculation of Initial and Final secant Elastic Modulus values


DIMENSIONS

  • Testing  frame (piston fully out): 955x635x3960 mm
  • Control console: 800x900x1550 mm

 

WEIGHTS AND SHIPPING CUBAGE

  • Testing frame: 2900 kg approx.
  • Control console: 200 kg approx.
  • Total gross weight: 4000 kg approx.
  • Shipping cubage: 7  m3  approx.

Standards

  • EN ISO 6892
  • EN ISO 7500-1
  • ASTM A370

Accessories and Spare Parts

Code
Description
Units