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Laboratory fully automatic digital vibration triaxial tester

The purpose of the vibration triaxial tester is to determine the elastic modulus of saturated soil, soil samples or the stress, strain and pore water pressure changes of samples mixed with cement, gravel or soil under dynamic action, so as to determine its destructive strength (including liquefaction) under dynamic action, dynamic elastic modulus and damping ratio when the strain is greater than 10-4 and other dynamic characteristic indicators (large elastic modulus).

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    product description

    Purpose and scope of application

    Loading methods are divided into two types: upper loading and lower loading

    The purpose of the vibration triaxial tester is to determine the elastic modulus of saturated soil, soil samples or the stress, strain and pore water pressure changes of samples mixed with cement, gravel or soil under dynamic action, so as to determine its destructive strength (including liquefaction) under dynamic action, dynamic elastic modulus and damping ratio when the strain is greater than 10-4 and other dynamic characteristic indicators (large elastic modulus).

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    Composition of the instrument

    This vibration triaxial instrument is an electromagnetic servo vibration triaxial. It consists of a main unit, an electro-hydraulic servo control system, a pressure control system, a computer control, a data acquisition and software processing system, etc.

    (1) Main unit: including a pressure chamber and a servo electric cylinder.

    (2) Electromagnetic servo control system: used for axial vibration, applying axial dynamic stress, and controlling the servo electric cylinder.
    (3) Pressure control system: applying confining pressure, back pressure, including pipelines, air source, water source, etc.
    (4) Computer control, data acquisition and software processing system: The computer controls the entire process, collects data in real time, and records the entire test process. After the test is completed, the test record sheet and curve report are automatically generated. 

    Technical parameter

    (1) Main unit
    Electric cylinder piston stroke: 100mm
    Electric cylinder: Maximum output 10KN (other specifications optional: 5KN; 50KN; 100KN)
    Pressure sensor: 0-10KN accuracy 0.05N
    Deformation: 0-100mm accuracy: 0.001mm, can be reset at any point
    Electric cylinder loading speed: 0.001-50mm/min, can be set arbitrarily
    Electric cylinder vibration frequency: 0.1-5.0Hz, stress-strain control can be set arbitrarily
    Voltage: 220V 50Hz
    Power: 5KW
    (2) Confining pressure loading system
    Confining pressure range: 0-1000KPa (pressure source is air or water pump)
    Test medium: liquid or gas
    Pressure control: computer control
    Operation mode: computer operation
    Display accuracy: 1KPa
    (3) Back pressure control system
    Back pressure loading range: 0-1MPa 0.02KPa adjustable
    Voltage: 220V/250W
    (4) Volume change control system
    Discharge volume: 0.1mL
    Pore pressure transmitter: 0-300kPa, 0.5kPa accuracy
    (5) Pressure chamber
    Ø39.1mm, Ø61.8mm, Ø101mm are optional. Factory configuration is Ø39.1mm pressure chamber.
    (6) Servo control system
    The servo control system is a new generation of intelligent measurement and control products developed based on the ISD platform. It is a microcomputer-based PCI2.1 specification measurement and control card with a built-in 32-bit floating-point DSP control core and DTE embedded real-time operating system, realizing arbitrary multi-channel closed-loop control. The measurement and control frequency of 10,000 times/second can meet the high-standard measurement and control requirements of dynamic test specifications.

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