Germany WILLE  This stand alone electromechanical test apparatus is a robust construction device including of high-quality mechanic and electronic components which produces repeatable test results and the quality makes it suitable for research and also usual test applications.



The device gives the possibility to perform tests on different sample sizes to100mm.It applies vertical and horizontal independent loads by electromechanical actuators which enables each axis to be controlled in displacement (strain or velocity) mode as well as load control. The main advantage of device is an accurate testing of soil parameters without tilting and friction between shear test components. The high quality and low friction double linear guides used to ensure strength and alignment without tilting in normal and shear directions. The normal stress and the shear stress are closed loop controlled by an electromechanical drive system.

The cylindrical sample is mounted inside a rubber membrane and positioned inside a confining polished low friction brass rings (optional membrane with wire-mesh is also available), therefore the horizontal diameter of sample remains constant (constant section area) while the vertical settlement during consolidation is permitted. The shear stress is performed by horizontal movement which applies at the bottom of the sample relative to the top of it.

Two porous discs are located on top and bottom of the sample and two porewater ports at top and bottom gives the possibility to saturate the sample. It is recommended to configure a set-up of 2.5kN load configuration to comply with ASTM D6528-07standard. GEOsys software in combination with this unit performs all your tests automatically and without operator assistance during the test period.

System Geography

① Electromechanical Stiff stand-alone Load frame

② Two columns beam to mount the linear guides and maintain rigidity of machine

③ Two stainless steel pillars to further brace the system

④ High quality and low friction double linear guides used to ensure strength and alignment without tilting in normal and shear directions

⑤ Upper traverse

⑥ Simple Shear test Jig

⑦ Front operational panel includes of control buttons, function buttons and LCD display

⑧ Axial Load cell

⑨ Axial displacement transducer

⑩ On-0ff switch button

⑪ Stop button

Static Simple Shear Apparatus (ASA TYPE)

The Simple shear Apparatus is an automated apparatus with small footprint and is suitable for Simple / direct shear tests up to 100 mm specimen size with fully operation stand-alone via front panel and hardware buttons or directly with software. The device has two electromechanical loading units includes of stepper motor and gearbox which applies normal stress and shear stress on sample with closed  loop control function. This compact device eliminated the manual loading for dead weights or pneumatic version which needs air pressure for operation.

This ASA model has a double cross bar for performance of tests and  result of frictionless tests. This function enable device to get upgraded with different test jigs and inserts to run below tests with high accuracy: • Uniaxial direct Test  • Direct Shear Test  • Soil triaxial Test  • Oedometer- Consolidation Test

The main advantage of device is an accurate testing of soil parameters without tilting and friction between shear test components. The high quality and low friction double linear guides used to ensure strength and alignment without tilting in normal and shear directions. All above functions makes it a unique device for research applications. The electromechanical drive with high resolution and closed loop control rate generates closed-loop strain and stress controlled static axial load and strain and in addition stress-controlled shear forces.

The Apparatus includes of two Calibrated high precision load transducer with integrated amplifier for measuring axial normal stress and shear stress with Accuracy class 0.1% and resolution of 0.1 N. It has also two precision vertical displacement transducer and shear displacement transducer with Accuracy class of 0.1 %, resolution of 0.001 mm and required travel range of the customer.

Simple Shear Jig

The type of the porous discs depends on sample types and stress conditions which can be applied on sample. There is different availability for porous discs with different roughness and surface i.e. plane, grooves, ridges and embedded pins. Please note that our standard offer includes of sintered plane disk, please select your desired type of porous disc at time of quotation.

The test set up jig is comprising of:

Low friction sample slip rings (Teflon coated）

1 off bottom plate with stainless steel porous plate and twporewater connections for saturation and flushin

1 off Top cap, parallel-guided, with two porewate connections for saturation and flushing; free from tilting with incorporated stainless-steel porous plate

2 off Stainless steel porous discs with embedded pin

Adjustable Support Frame

The aim of design and manufacturing of the adjustable support frame is to reduce the sample disturbance as much as possible(This item is not included in standard delivery and ordered separately). The test kit fixes to the base pedestal and then the main part of the kit which is two arms connect to the top cap. Finally, the kit will be assembled to the main machine and after arrangement of the vertical actuator, two arms will be released, and the kit will be di assembled from the machine.

Specimen Preparation Kit

The two-part split former is used to enable rubber membrane to be held tightly against the confining rings when vacuum is applied during sample preparation.

Note: Reinforced membrane with wire-mesh (NGI type) is also available on request.

The set of specimen preparation kit includes of:1 off clamp，1 Set of membrane，1 off Membrane Stretche，1 Set of O-ring，1 Set of filter pape，1 off Two-part split mol，Set of fixing screw

SIEMENS Industrial Controller

The operation of the device requires the direct input of numerical values besides the use of the function keys. The control element made by Siemens Company is an advanced control panel which allows the user to enter the numerical values and control the system by other function keys easily. You need just to enter the values and press the run Key to start the operation.

The operator panel gives the user access to all functions in the operation and service menu. This enables the user to start and run the pump as well as conduct calibration if needed. These controls are instinctive and simple to use. All functions, such as actual status, flow rate and information on the pressure pumping ramp can be seen on the LCD display on the front of the device.

Main Features

• Graphic display including 10 input membrane keys

• Setting force or position manually

• CE mark

• Ethernet interface

• 22 available different languages

• Multi language menu navigation

• Calibration function

• 4 free analogue Ports with A/D converter (interface+ /- 10 VDC)