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GDS Shear System Analysis

To help you choose the right shear system for your testing requirements, we have put together the below comparison table, to act as a guide on our most popular shear systems. You can download a copy of this table at the bottom of the page.





Electro-mechanical Dynamic Cyclic Simple ShearVariable Direction Dynamic Cyclic Simple ShearConfined Variable Direction Dynamic Cyclic Simple Shear




LOAD / STRESS





Maximum Axial Load:
10kN (Standard 5kN)
10kN (Standard 5kN)
5kN
10kN
Maximum Shear Load:
Simple Shear 2.5kN
10kN (Standard 5kN)
2kN
5kN
Maximum Axial Frequency:
0.01Hz
5Hz
1Hz
5Hz
Maximum Shear Frequency:
0.01Hz
5Hz
1Hz
5Hz
Cell Pressure Available:
No
No
No
Yes
Maximum Cell Pressure:
N/A
N/A
N/A
1MPa
2nd ‘Y’ Shear Axis Available:
No
No
Yes
Yes
Maximum ‘Y’ Axis Load:
N/A
N/A
2kN
5kN
Maximum ‘Y’ Axis Frequency:
N/A
N/A
1Hz
5Hz
Load Control Available:
Yes (On both axis)
Yes (On both axis)
Yes (On both axis)
Yes (On both axis)
Nominal Force Accuracy:
<0.1% of Maximum Load Rating
<0.1% of Maximum Load Rating
<0.1% of Maximum Load Rating
<0.1% of Maximum Load Rating
Shear Force Accuracy:
<0.1% of Maximum Load Rating
<0.1% of Maximum Load Rating
<0.2% of Maximum Load Rating
<0.2% of Maximum Load Rating
DISPLACEMENT / STRAIN:




Displacement Control Available:
Yes (On both axis)
Yes (On both axis)
Yes (On both axis)
Yes (On both axis)
Shear Displacement Accuracy:
0.3% FSO
0.1%
0.1%
0.1%
Shear Displacement LVDT:
Upgrade option
± 10mm - 0.1%
± 10mm - 0.1%
± 10mm - 0.1%
“Y” Axis Displacement Accuracy:
N/A
N/A
0.1% FSO
0.1% FSO
“Y” Axis Force Accuracy:
N/A
N/A
0.2% FSO
0.2% FSO
Normal Force Load Cell Resolution:
0.001kN
0.0001kN
0.0001kN
0.0001kN
Shear Force Load Cell Resolution:
0.001kN
0.0001kN
0.0001kN
0.0001kN
Axial Displacement Accuracy:
0.3% FSO
0.1% FSO
0.1% FSO
0.1% FSO
Axial Displacement Range:
Stepper Motor: 30mm
Tx: 25mm
Encoder: 30mm
LVDT: +/-2.5mm
Encoder: 30mm
LVDT: +/-2.5mm
Encoder: 40mm
LVDT: +/-2.5mm
Shear Displacement Range:
Stepper Motor: 40mm
Tx: ±25mm
Encoder: 40mm
LVDT: +/-10mm
Encoder: 40mm
LVDT: +/-2.5mm
Encoder: 40mm
LVDT: +/-10mm
“Y” Axis Displacement Range:
N/A
N/A
Encoder: 40mm
LVDT: +/-2.5mm
Encoder: 40mm
LVDT: +/-10mm
FEATURES:



Computer Controllable:
Yes (Via GDSLAB)
Yes (Via GDSLAB)
Yes (Via GDSLAB)
Yes (Via GDSLAB)
Electro-mechanically Controlled:
Yes
Yes
Yes
Yes
Custom Wave Forms Available:
Not available
Yes
Yes
Yes
Custom Wave Form (Points Available):
No
1000
256
256
Back Pressure Control Available:
No
No
Yes
Yes
Dynamic Control Available:
No
Yes on both axis, for displacement & load control
Yes on all axis, for displacement & load control
Yes on all axis, for displacement & load contro
Static Control Available:
Yes on both Axis
Yes on both Axis
Yes on all Axis
Yes on all Axis
Pre-progrmmed waveforms:
Yes (Via keypad control)
Yes
Yes
Yes
Maximum Data Save Points Per Cycle:
N/A
1000
500
500
Control Frequency During Testing From Control Unit:
1 point per second
5000 points per second
500 points per second
500 points per second
Number of Channels on Data Acquisition Unit:
N/A (No data acquisition unit required for standard set-up)
8 (LEMO Type Connectors)
12 (DIN Type Connectors)
12 (DIN Type Connectors)
GENERAL:




PC Connection Type:
USB
USB
USB
USB
Sample Sizes Available:
Up to 70mm Simple Shear
Up to 100mm Direct Shear
Up to 100mm
Up to 100mm
Up to 100mm
Data Acquisition Type:
In-built load, 2 x Digi RFM for standard transducers
8 Channel DCS
3 x 4 channel ELDCS
3 x 4 channel ELDCS
GDSLAB Compatible:
Yes
Yes
Yes
Yes
Size (WxDxH):
0.27 x 0.64 x 0.7m
0.42 x 0.77 x 1.2m
0.58 x 0.80 x 1.15m
0.9 x 0.9 x 2.35m
Weight:
50kg

200kg

Average FootPrint:
660 x 220mm
1m x 1m
1m x 1m
1.2m x 1.2m
Direct Shear Upgrade:
Yes
Yes
No
No
Bender Elements Upgrade:
Yes
Yes
Yes
Yes
Unsaturated Testing:
No
No
No
Yes
Upgradeable to Local Strain Measurement:
Yes
Yes
No
No

Download a PDF version of the comparison.

Note: Due to continued development, specifications may change without notice.

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