Automatic Uniaxial and Triaxial Test System

Description

The Automatic configuration for determining the elastic modulus and strength characteristics of rock specimens under uniaxial and triaxial conditions is based on the AUTOMAX Multitest control console for axial load and SERCOMP 7 for confining pressure. The 2 consoles are operated independently and the failure envelope is obtained by few individual tests (single - stage) with automatic application of axial load and confining pressure at different levels. AUTOMAX Multitest allows to perfom tests under load and strain control.
The confining pressure into the Hoek cell, applied by SERCOMP 7 is also measured by AUTOMAX Multitst for simultaneous plot of all test quantities,  e.g. stress, strain and cell pressure.

Note: For a typical configuration of an Automatic triaxial test system see Additional information.
  • Automatic performance of uniaxial and triaxial tests with individual but combined control of axial load and confining pressure
  • Axial and horizontal stress are increased isotropically up to a defined level in automatic way
  • The 2 consoles are operated independently and the failure envelope is obtained by few individual tests (single - stage) with automatic application of axial load and confining pressure at different levels
  • Cell pressure is maintained constant (± 1%) and axial stress is increased automatically at constant load rate up to specimen failure (single-stage)
  • AUTOMAX Multitest console allows to perform tests under load and strain/displacement console

Label/Normering

EN 14580‰EN 1926‰ASTM D2664‰ASTM D3148‰ASTM D5407‰ASTM D2938‰ASTM D7012

Technische specificaties

Technical Specifications

AUTOMAX Multitest
The AUTOMAX Multitest consists of an ergonomic control console which houses the power unit and the PC.
Specifications
Hydraulics

  • Dual stage pump: centrifugal low pressure for fast approach and automatic switching to radial multi-piston high pressure for loading
  • DC motor. 720 W, 50-60 Hz
  • Maximum working pressure 650 bar
  • Third and fourth frame option, active frame selection by software
  • Flow-sharing technology to perform loading and unloading cycles
  • ES Energy Saving technology to reduce power consumption and silent operation
    Hardware
  • 131.000 points effective resolution
  • Closed-loop P.I.D. control
  • 4 channels for load sensors (pressure transducers/load cells)
  • 1 channel for confining pressure (acquisition only)
  • 6 channels for strain/displacement transducers (potentiometers, magnetostrictive, LVDTs)
  • 3 channels for strain gauges
  • Memorization of the calibration curve enables sensors to be connected and used immediately
  • Digital linearization of the calibration curve (multi-coefficient)


SERCOMP 7
The hydraulic unit SERCOMP 7 controls the lateral pressure in the Hoek cell in case of triaxial testing. A cooling device is incorporated, for superior control and uniformity of pressure throughout the test.
The control console includes a large graphic display with a mem­brane keyboard allowing easy setting and test monitoring.
 Specifications
Hydraulics

  • Maximum working pressure: 700 bar
  • Maximum oil delivery: 0.7 litres/min
  • Flow control: by servo-valve system
  • Hydraulic ports: 2
  • Power: 750 W
  • Voltage: 230 V, 50 Hz, 1 ph (other voltages are available - see Ordering info)
  • Dimensions: 470x410x1000 mm(d x w x h)
  • Weight: 120 kg (approx.)

Hardware

  • Large graphic display with a mem­brane keyboard for inputting test data
  • 65.000 points effective resolution
  • Closed-loop P.I.D. control

 

Order nummers

32-C7022/S: Sercomp 7, servohydraulic control console for la- teral pressure to perform triaxial rock testing. 230V, 50 Hz, 1ph. 32-C7023/S: Sercomp 7, servohydraulic control console for la- teral pressure to perform triaxial rock testing. 220V, 60Hz, 1ph.

Accessoires & toebehoren

 

: 32-C7024/S: Sercomp 7, servohydraulic control console for la- teral pressure to perform triaxial rock testing. 110V, 60Hz, 1ph. 50-C20M82: AUTOMAX MULTITEST computerized control console forup to 2 frames (expandable up to 4) capable to perform the following tests: - compression, flexure, indirect tensile strength (sofware module included); - Elastic modulus and Poisson ratio determination (optional software module required); - energy absorption by displacement/strain controlled test - Fiber Reinforced Concrete (optional software module required); - tensile strength of rebars (optional software module required). Conforming to EN and ASTM norms. PC included. 230V, 50-60Hz, 1 ph SPECIFICATIONS HYDRAULIC SYSTEM - Max. working pressure 700 bar - Double stage pumping system, high delivery-low pressure for fast approach and low delivery-high pressure for test execution - Hydraulic block suitable for the connection of 2 frames, expandable to 4. - ES Energy Saving technologies for reduction of power consumption and silent operations - FLOW SHARING Technology for the automatic execution of loading and unloading cycles - DC motor 720 W HARDWARE AND FIRMWARE - Effective resolution 131000 points - High frequency PID closed loop control - Control frequency 500 Hz - Sampling rate 500 Hz - 4 channels for load sensors (load cells or pressure transducers) - 6 channels to measure strain values with potentiometric, LVDT and magnetostrictive (e.g. our compressometer 55-C0222/G) transducers- 4 channels to measure strain values with strain gauges - Saving of calibration curves for immediate connection of various sensors - Digital linearization of the calibration by automatic multi-coefficient factor PC AND SOFTWARE - Main software MULTITEST allows: * remote control of the whole system and the automatic execution of test including: fast approaching, zeroing, test execution,numerical and graphical management of test results, etc. * active frame selection via software * printing and saving of customized test reports both for single and batch tests in Excel format * multi-language including preset languages and editable local language (latin letters only) * automatic load measurement verification proce- dure including data acquisition and printing of traceable calibration certificates, when the PC is connected to the digital readout unit mod. 82-P0801/E and the suitable load cells * the use of 4 software packages each one tailored for a specific test method - DATAMANAGER software package (included) for compression, indirect tensile, 3 points and 4 points flexural tests on different types of specimens - E-MODULE software package (optional code 82-SW/EM) for Elastic modulus and Poisson Ratio determination allowing: * Free unlimited programmable load/stress cycles to fulfil any kind of test procedure * Real time monitoring of test data, stress/time, stress/axial strain, stress/lateral strain graphs * Automatic verification of sample positioning and sensors functionality, as per standards requirements - D-Control software package (optional code 82-SW/DC) for displacement controlled tests allowing: * Automatic calculation of test results accor- ding to EN 14651, 14488-3, 14488-5, UNI 11039-2, ASTM C1550, C1609, C947, UNE 83515 * 8 test pre-set testing procedures according to the above Standards * Customizable test procedure allowing desired loading history * Possibility to change in real time the test parameters: target load/displacement, control variable, test speed. * Data saving rate 250/sec - UTS software package for steel tensile testing (optional code 82-SW/UTS) allowing: * load/stress control * crosshead separation control * simultaneous display of: stress/elongation, stress/time; elongation/time with possibility to display multi-diagrams 50-C20M84: AUTOMAX MULTITEST computerized control console forup to 2 frames (expandable up to 4) capable to perform the following tests: - compression, flexure, indirect tensile strength (sofware module included); - Elastic modulus and Poisson ratio determination (optional software module required); - energy absorption by displacement/strain controlled test - Fiber Reinforced Concrete (optional software module required); - tensile strength of rebars (optional software module required). Conforming to EN and ASTM norms. PC included. 110V, 60Hz, 1 Ph SPECIFICATIONS HYDRAULIC SYSTEM - Max. working pressure 700 bar - Double stage pumping system, high delivery-low pressure for fast approach and low delivery-high pressure for test execution - Hydraulic block suitable for the connection of 2 frames, expandable to 4. - ES Energy Saving technologies for reduction of power consumption and silent operations - FLOW SHARING Technology for the automatic execution of loading and unloading cycles - DC motor 720 W HARDWARE AND FIRMWARE - Effective resolution 131000 points - High frequency PID closed loop control - Control frequency 500 Hz - Sampling rate 500 Hz - 4 channels for load sensors (load cells or pressure transducers) - 6 channels to measure strain values with potentiometric, LVDT and magnetostrictive (e.g. our compressometer 55-C0222/G) transducers- 4 channels to measure strain values with strain gauges - Saving of calibration curves for immediate connection of various sensors - Digital linearization of the calibration by automatic multi-coefficient factor PC AND SOFTWARE - Main software MULTITEST allows: * remote control of the whole system and the automatic execution of test including: fast approaching, zeroing, test execution,numerical and graphical management of test results, etc. * active frame selection via software * printing and saving of customized test reports both for single and batch tests in Excel format * multi-language including preset languages and editable local language (latin letters only) * automatic load measurement verification proce- dure including data acquisition and printing of traceable calibration certificates, when the PC is connected to the digital readout unit mod. 82-P0801/E and the suitable load cells * the use of 4 software packages each one tailored for a specific test method - DATAMANAGER software package (included) for compression, indirect tensile, 3 points and 4 points flexural tests on different types of specimens - E-MODULE software package (optional code 82-SW/EM) for Elastic modulus and Poisson Ratio determination allowing: * Free unlimited programmable load/stress cycles to fulfil any kind of test procedure * Real time monitoring of test data, stress/time, stress/axial strain, stress/lateral strain graphs * Automatic verification of sample positioning and sensors functionality, as per standards requirements - D-Control software package (optional code 82-SW/DC) for displacement controlled tests allowing: * Automatic calculation of test results accor- ding to EN 14651, 14488-3, 14488-5, UNI 11039-2, ASTM C1550, C1609, C947, UNE 83515 * 8 test pre-set testing procedures according to the above Standards * Customizable test procedure allowing desired loading history * Possibility to change in real time the test parameters: target load/displacement, control variable, test speed. * Data saving rate 250/sec - UTS software package for steel tensile testing (optional code 82-SW/UTS) allowing: * load/stress control * crosshead separation control * simultaneous display of: stress/elongation, stress/time; elongation/time with possibility to display multi-diagrams