Hollow Cylinder Apparatus
Hollow Cylinder Apparatus
Hollow Cylinder Apparatus
Hollow Cylinder Apparatus
Hollow Cylinder Apparatus
Hollow Cylinder Apparatus
- Description:
Hollow Cylinder Apparatus
- Model:
Static-Dynamic
- Manufacturer:
APS-WILLE Geotechnik
Product Information
  • Description
  • Standard
  • Feature
  • Specification
  • Software
  • Upgrade Option
Description

空心圆柱试验系统

APS (Wille Geotechnik®) is manufacturing and providing variety range of electromechanical orservo hydraulic loading systems in variety range of load/torque and frequencies for many yearswhich enable us to cover all needs of the users for testing small and large sample sizes for differentapplications.This machine gives a lot of flexibilities to the users to run complex tests accuracy and  and add different upgrading module to system to configure therequired testing applications.


The high-quality actuator in combination with operating software is able to generate and applydifferent types of loading waveform can be given to the sample e.g. Sinusoidal, Square, Triangular,Rectangle, Ramp signal and user defined waveform.Our system comes with a powerful dynamic controller up to 10KHz -24 bit and this makes a uniquefeature for our machines in dynamic testing field. A unique and flexible software along with  components bring you different possibilities to use the device and run your test in a better way.


The Hollow Cylinder Apparatus enables theoperator to apply rotational displacement andtorque to a hollow cylindrical or soil specimen ofsoil. This modular testing apparatus is suitablefor static and dynamic test and can simulate thecomplex loading conditions at a point in a soilSpecimen. The device can also be used as a cyclictriaxial testing device by changing the upper andlower pedestals into solid ones. It is capable oftesting axial strain levels lower than 0.00001 %.


In electromechanical system both axial and torqueis applied from the bottom of the sample andthe top of sample is free and in servo hydraulicapparatus the axial laod/torque actuator islocated on upper traverse. 

There is the possibility to control the magnitudeand direction of the three principal stresses.As example the following parameters can beinvestigated:

• Anisotropy of soil samples

• Effects of principal stress rotation

• Effects of intermediate principal stress


Thanks to the powerful multifunction GEOsyssoftware which allows the simply programmingof complex user defined test sequences bystructured Windows operation on a graphic userinterface and state of the art apparatus of hollowcylinder test. 

users are able to simulate the realfield conditions on laboratory and do the testsunder variety of these conditions and study thebehaviour of the soil under required conditionsby applying wide range of stress/strain paths.

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System Geography

① Cyclic Electromechanical Load Frame for axial and torsional load

② Triaxial Cell 

③ Local transducers

④ Cell wall Lifting mechanism

⑤ Automatic Volume Pressure controllers (VPC) for back Pressures

⑥ Automatic Pressure controller (APC) for inner cell and outer cell Pressures

⑦ Automatic volume measuring burette

⑧ Advanced Dynamic Controller

⑨ Software enables all kinds of static and cyclic Tests


Electromechanical Load Frame

The apparatus has a real-time synchronized backlashelectromechanical servo-motor drive system for axial andtorsional load.In this loading frame the axial and torsionalload actuators are located in base of the frame and load areapplied from the bottom of triaxial cell. At top of cell there isa free operating space to facilitate installation of sample, orinternal sensors or etc. 


The frame has excellent rigidity for cyclic axial and torsionalload up to highest frequency. The apparatus has a liftingmechanism for triaxial cell which enables the users to setup the sample and the cell easier(no need to have frameor counter balance).The powerful multifunctional GEOsysSoftware supports all the test procedures with a wellaccess to all testing sessions. 


The control panel is used to control the axial load, whichconsists of the Main switch, Emergency stop switch, Startbutton.The system includes a special load pistonconstruction to compensate cell-pressure changesaffected by the volume change of the movement ofpiston in and out of the triaxial cell during cyclic tests. Itgives an accurate control of defined phase shift controlbetween the dynamic axis.The servo-motor built in encodersdirectly measurement the axial and angle measurement.

空心圆柱试验系统

Servohydraulic Load Frame

This 2-column load frame is designed for to perform the teston larger sample sizes which requires higher dynamic loadand torque range than electromechanical machines. 

The testing actuator which is double acting  lowfriction one is mounted on the upper crosshead and the loadframe is a rigid construction with high stiffness and precisionalignment with convenient working height.

The Wide column spacing enables to accommodate largecells up to 300 or even 500mm O.D even with environmentalchambers and furnace. The actuator is located at uppercrosshead and the power supply unit is located in specialacoustic enclosure.

The cylinder and all its accessories have been enclosed forprotection (if required). After adjusting cross beam, it can befastened manually on the chrome-plated shafts. Thus, thecross beam can be moved to and fastened at all requiredheights.

There is a variety range of load/Torque which is coveredby this series of load frames. When you have any testingapplications, we can assist you in configuring a system tomeet your test requirements.

空心圆柱试验系统

Hydraulic Power Pack

Our series of hydraulic power-packs supplysmooth hydraulic fluid to actuators, hydraulicpressure intensifiers, and servo hydraulic testingmachines to meet their testing system demands.

As the dynamic performance of a hydraulicsystem depends on input oil flow and pressurein cylinder therefor we offer a wide range of flowrates to meet required dynamic performance foryour application. All components are mountedconveniently for easy access.


A key feature of our hydraulic power packs is thatthey offer demand-dependent flow-rate control,delivering at a constant pressure of 210, 280 or340 bar. They can locate beside or in greaterdistance from load frame.

An oil-to-water heat exchanger or air-coolingexchanger controls fluid temperature. Atemperature switch turns the hydraulic powerpack off when the temperature of the fluidexceeds a pre-set value – lights on a front panelare used to indicate temperature levels.

Closed loop re-cooler system (chiller for Oil /Water Cooling) is available on request and can beintegrated to the unit.

空心圆柱试验系统

Soil Triaxial Cell

This series of Stress path Triaxial cells designed for  static and dynamic soil testing to testcylindrical soil specimens with diameters from 38mm up to 150 mm, a length/diameter ratio of at least 2under triaxial conditions. The cells cover variety range of tests which is required in the geotechnical labs.

 伺服电机控制动三轴试验系统

Transducers

There are different transducers which are available and can be selected to be used in the system per asthe system configuration or testing requirements of the user.

• External Load cell for measuring Axial Load

• External torque meter for measuring the torque

• Combined submersible axial and torque transducer for measuring of normal force and torquedirectly at the sample inside the triaxial test cell to remove the effects of loading ram friction onmeasurement.

• Axial displacement Transducer with mounting block and signal conditioner for measuring axialDisplacement

• Pressure transducer for inner cell/outer cell pressure

• Non-contact High-accuracy Angle Displacement Transducer

• Angular displacement sensor with a deflection range of +/-45°(for large shear strain measurement)

• Non-contacting displacement sensor with +/-2,5 mm range (for small shear strain measurement)


Static Pressure Controlling System (Inner Cell/Outer Cell/Back Pressure)

The hollow cylinder test system requires three Pressure controllers for inner cell, outer cell and backpressure. This can be configured and controlled automatically by different methods depends on thetesting applications, laboratory utilities and technical requirements in a variety range of pressure andfor different applications e.g.

With both systems which are fully automatic and are controlled via PC, advance tests such as Saturation,stress/strain path, permeability, K0 and other tests can be easily performed  with accuracy andprecision. 


A) Air Pressure Controller (APC)

The standard configuration of this series includesof one-off Air pressure controller (APC) to generateair pressures (e.g. confining and pore pressure), two-off Air/Water Bladder which acts as an interface toexchange pneumatic pressure into hydraulic pressureand one -off automatic water volume measuring deviceto measure volume changes.

This system is fully automatic system and is controlledvia PC and dedicated software.

Working pressure: 2 MPa    Pressure outlet:3 for inner cell, outer cell and backpressure


B) Volume Pressure Controller (VPC)

This method included of two Volume Pressurecontrollers for applying back pressure and Cellpressure. These are syringe pulse-less pumps whichprecisely generate and regulate pressure and provideflow control  in a variety range for differenttesting requirements.

The control of the units is simply done via Touch-panelfor stand-alone use or via PC and dedicated software.This making them very convenient and easy to operate. 

伺服电机控制静三轴试验系统     伺服电机控制静三轴试验系统            

Digital Controller

Digital High-Speed High Resolution Expandable Real Time Control and data acquisition System 10KHz control and data acquisition and 24 bit resolution. The Dynamic controller is suitable for screwdriven instruments(electromechanical) , hydraulic instruments with a valve driven with ±10 Volt andvariety of sensors e.g. load cells, LVDTs, strain gauges, extensometers, thermocouples and etc.

The multi-functionality of the controller allows a modular design of the measurement and controlparameters (sensors) via intelligent sensor plug, which store the calibration parameters, thus dependingon the application can be used flexibly.


电机控制动三轴试验系统    电机控制动三轴试验系统

Main Features

• Up to 32 low-noise closed-loop control channels for static and dynamic tests

• up to 24-bit resolution channels for each test axis (e.g. force, displacement, pressure, strain)

• With digital controller parameterization and bumpless switching between all control functions

• Smooth changeover between all control functions

• Complete, simultaneous data transmission to avoid any data loss

• Digital adjustable controller parameters (P-I-D parameter)

• Simple and flexible test or setpoint parameter adjustment

• I/0 processing of externally connected

• Configuration and setup with PC software

Standard

• JGS 0511-2009

• JGS 0543

• ASTM


Feature

• Static and cyclic loads

• Electromechanical or servohydraulicApparatus

• For Hollow and solid samples

• Electromechanical apparatus up to 25KN10Hz/200 Nm

• Servo-hydraulic apparatus up to 100KN100Hz/600 Nm

• Sample sizes up to 300mm O.D

• Software including different test modulese.g. Saturation, consolidation, Stress paths,monotonic shear test, dynamic shear test,plane strain, simple shear and etc

• Easy access to sample by Cell wall liftingmechanism

• Ethernet connection for fast data transferringto PC

• Different upgrading options e.g Unsaturated,cyclic inner/outer cell pressure ,benderelement, higher pressure cells and etc

• Different types of loading waveform can begiven to the sample e.g. Sinusoidal, Square,Triangular, Rectangle and user definedwaveform

• Direct operation of the device by a PC withcontrolling software (communication protocolis available)

• High speed dynamic controller for monitoringof measured values and test procedures(2,5KHz or 10 KHz and 24 bit)

Specification
DescriptionTechnical Specification
Load range20 kN
Frequency2Hz- 5Hz – 10Hz
Torque100 Nm / 200Nm /400Nm
Sample Size(outer/inner) 100/60 mm or 150/100mm


Software

GEOSYS Software

GEOsys is a multi-functional and modular controlling and data acquisition software in Windows. It allows for the simple programming of complex user defined test sequences via structured Windows instructions on a graphi cuser interface.

GEOsys utilizes a flexible, programmable system that controls test appliances that coordinate various test operations. The flexible operating panel provides tools to configure the appliance,editors to carry out load procedures, and functions for analysis, presentations and logs.


The software is designed to support a modul arstructure for the test environment so as to enable a flexible configuration and thus fulfil the specific requirements of the company.

The important key feature of this software is the ability to allow users to simply and freely program standard or complex test sequences with structured Windows operations via a graphic user interface.

Thanks to the wide range of abilities Geosy soffers, it is not only compatible with our products,but it can also be used with hardware from other manufacturers,providing data acquisition and test controlling for hard- ware of a similar or more advanced standard.


应力路径三轴仪

Main Features

• Unique platform to address all testing needs,be it soil, asphalt, rock or construction related, both dynamically and statically

• Controlling and data acquisition software

• Simultaneous loops for all connected actuators

• Free programmable Test Sequence Control and Formula Editor (upgrade version)

• Complete real-time data-acquisition and closed- loop control for each channel using real parallel configured channels

• Flexible and user-friendly

• Supporting functions of similar manufacturer Options concerning data conversion in ASCII

• Digital setting of PID Parameters (parameter optimizing or tuning depending on the material) even during operation

• User roles (administrator, service, developer,lab assistant) for easy handling – decreasing the likelihood of errors

• OS platform independent software (e.g.available for WINDOWS, LINUX or MAC OSX)

• Ability to allow users to simply and freely program standard or complex test sequences with structured Windows operations via a graphic user interface

• Suitable for up to any number of simultaneous and independent real-time,closed-loop controlled channels, machines,or test devices, such as axial load, confining pressure, pore water pressure, as pore air-pressure

• Management of hardware components User supplied, calculated measurements

• Languages: English, German, Russian,Chinese, Polish and etc

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axial-strain-deviatoric-stress


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Combination of cyclic axial displacement and rotation



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Movement delay-Displacement



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shear-strain-shear-stress


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Combined-Cyclic rotation and vertical displacement


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Upgrade Option

• Cell Wall Lifting System

The system can be upgrading to cell wall lifting mechanism during production and it speeds up the testing preparation procedure and reduce the time which is required to provide the system for a sing letest. (no need to have extra lifting frame-counter balance)

空心扭剪仪

• Cyclic Cell And Back Pressure

The Cyclic Volume Pressure Controller is a high accuracy advanced electromechanic or servo hydraulic Closed-loop controlled Pressure System which regulate Cyclic pressure and provide flow control  in a variety range for different applications e.g. cell pressure or back pressure for cyclic triaxial test system.It also can be used to eliminate disturbance to constant cell pressure in dynamic test cells which use Triaxial cell without balanced ram.This pump can apply pressure up to 4000kPa with volume change control up to 1000 ml with different range of working frequency up to10 Hz.The main software should be upgraded as well with the module of Cyclic Cell and Back pressure to enable your Triaxial tests to be run with this feature.

电机控制动三轴试验系统

• Unsaturated Test Set Up

By adding additional hardware to the system,the system will be upgraded to do unsaturated testing as well. Depends on the selected method of measuring the sample volume change, the additional accessories would be different.High Air Entry Porous Bottom Disc, Advance Pressure controller (APC), unsaturated Software module are some examples of these accessories.

电机控制动三轴试验系统

• Internal Strain Measurement

The triaxial test system depends on its type can accept internal sensors for measurements of load, axial deformation and radial deformation.This upgrading helps to have higher accuracy and measuring during the test.For example, it is highly recommended to use Circumferential measuring unit for K0 testing.

电机控制动三轴试验系统

• Bender Element Test

The Triaxial test system is able to simply accept bender elements and run bender element tests with its additional accessories.Piezoelectric elements can be easily placed in top and bottom cap of the device for performing bender element or compression wave velocity tests. The existing cell is initially designed to accept the Piezoelectric elements without any extra upgrading on the cell.Exchangeable Bender Element Set for any specimen from 35mm to 150 mm is available and designed for usage in Triaxial test device and can be used for other devices e.g. resonant column device, consolidation cells simple-shear or standard shear devices.Combined Bender element sets are available for Horizontal and also lateral testing for both S and P-wave testing in opposing propagation directions. 

电机控制动三轴试验系统

• Water De-Airing Apparatus

This compact unit provides de-aired water with low level of gas content, as it is demanded for different tests with standard volume capacity from 20 Liter up to 60 Liter.

电机控制动三轴试验系统

• Environmental Temperature Chamber

The triaxial test system depends on the type and existing components has the possibility to be upgraded to run testing under temperature controlling for variety range of temperatures from-25 ° C to +200° C.This upgrading need different accessories/components depends on the main system including of hardware and also software. Due to the PC-control of temperature unit, any kind of temperature test sequences can be performed.

空心圆柱试验系统