Building better technology
for the civil engineering industry

Building better technology
for the civil engineering industry

Tel: +44 (0)118 945 3737

Tel: +44 (0)118 945 3737

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Overview


csBender

The Clisp Studio csBender module is an add-on to the core package (csHost) that makes it easy for you to set-up, control and monitor Bender Element Testing in soil testing laboratories, and collate and output the results in industry standard or your own defined format.



Create



Bender Test Setup

Clisp Studio csBender allows you to easily set up the specimen details and parameters relevant to your Test set up (once the s-wave or p-wave type and direction have been set up at the Bender Scope control panel).


 

 

csBender interface screen
 

 

     csBender specimen details

Wave Setup

The Bender Scope Control panel enables you to set up the wave type (either P-Wave or S-Wave Vertical or Horizontal).

Specimen Setup

You can input the Specimen Height and Bulk Density but when inputting the specimen height, be careful to allow for the amount of the Transmit and Receive piezoelectric elements that are inserted into the sample, as the distance to be used in the calculation of GMax will be the tip to tip distance travelled by the wave.

Test Setup

You can setup the Waveform Shape (either Sinusoidal, Triangular or Square), the Pulse Frequency and the Amplitude.


Test Setup (cont.)

The Acquisition Method will be the name given to the Bender Scope and the Capture Window Span value determines how many possible cycles will be captured (dependent upon the Pulse Period).

The Receiver Amplification and Sampling Resolution are best left at their maximum values but may be changed if you require.

If the first captured wave is found to be 180° out of phase, a checkbox can be ticked in order to correct subsequent wave captures automatically. If a number of measurements are to be taken, the number and frequency can be set up.

The Low-Pass Filter parameters can be adjusted to decrease the amount of received noise using a smoothing algorithm. The values must either all be zero or a value of ten summed together.



Execution & Results



Bender Test Execution & Results

The execution of a Horizontal or Vertical S-Wave or P-Wave is controlled from the Graph View to provide an instant capture of the wave. 





 

 

csBender live view

 

 csBender capture table


Live Test Views and Tables

A Live Test View and Table are available should they be required. They display the mV values of the Transmit and Receive signals, however a graph is the most convenient way to visualise and measure the data.

Live Graphical Views

The selected wave (Horizontal or Vertical S-Wave or P-Wave) is captured and displayed on the Graphical view, providing an instant view of the wave.

Successive waves are stored and a list of all saved captured waves can be displayed, allowing you to select the best ones in order to ‘average out’ an optimum transmit and receive wave for measurement.

The GMax value can be calculated using the cursors on the peaks of the transmitted and received waves.


Live Graphical Views (cont.)

The graph can easily be manipulated to select the highest amplitude values to obtain the time difference between  waves. Cursor options on the graph are available to calculate the GMax value automatically.

Data Export and Import

Clisp Studio has the ability to export the entire Test to MS Excel for further data manipulation. The Test can also be exported to a script file which can be imported when creating a new Test if desired. This enables Tests from the current or older versions of Clisp Studio to be cloned or even rerun if required.This facility is extremely useful for Test exchange between laboratories or investigation of an issue by VJ Tech.


Bender Graph Collage

Final Table

PC Minimum Specifications Please see this document for a complete specification
System Requirements MS .Net V4.0, MS SQL Server (or Express)
Import / Export Formats XLS, PDF, XML
Standard Graphs
  • Pulse Time (mS) vs. Source (Tx) Value (mV) & Echo (Rx) Value (mV) of the waveform type selected
Standard Tables
  • Time, Source (Tx) Value (mV), Echo (Rx) Value (mV)
Standard Views
  • Source (Tx) Value (mV), Echo (Rx) Value (mV)
Standard Results
  • GMax Value