A
single integral unit provides simultaneous averaged
axial strain measurement and averaged lateral or transverse
strain. Also available with averaged axial readings
alone.
Ideally suited for testing anisotropic materials such
as advanced composites as well as general purpose tests
like determining Poisson’s ratio. The Model 3560 uses
a design unique to Epsilon, where the knife edges remain
parallel during the travel. This approach greatly reduces
crosstalk between axes and allows use on round or flat
specimens with equal ease. These extensometers are very
easy to mount. Integral springs hold the unit on the
test sample. The parallel multiple flexure design makes
these units very durable.
The Model 3560-AVG reads axial strain only, as a single
averaged output. It may also be supplied with two independent
outputs, one measurement from each side of the specimen.
This is most commonly done when an indication of specimen
bending is desired. The second version, the Model 3560-BIA,
includes both the averaged axial strain and the transverse
strain. Again, this may also be configured as dual independent
axial readings. This results in a 3 channel extensometer.
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Knife
edge mounting and parallel travel allow mounting on
round or flat specimens. Much easier to mount than designs
using conical points (especially on thin flat specimens
and round ones). |
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High
accuracy and minimal crosstalk between channel. |
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Works
on wide range of specimen sizes, from 0.1 to 1 inch
width or diameter (2.5 mm to 25 mm). |
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Includes
high quality foam lined case and spare set of tool steel
knife edges. |
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Multiple
sets of dual flexures and mechanical stops allow testing
through failure and provide a rugged unit. |
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Ultra-flexible
cable, 8 ft (2.5 m) long as standard |
Specifications
Linearity: 0.15%
Crosstalk: less than 0.5%
Output: 2 to 4 mV/V, depending on model
Excitation: 10 VDC recommended, 15 VDC or VAC max
Temperature range: -40 to +100 C (-40 to +210 F) standard
(others optional).
Shunt Calibration Modules available. |
Model 3560 Available Versions:
ANY combination of gage length, travel and temperature range
listed below is available.
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Gage Length:
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| METRIC |
U.S.A. |
| 10 mm |
0.500 in. |
| 25 mm |
1.000 in. |
| 50 mm |
2.000 in. |
Travel in Percent Strain:
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AXIAL:
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| AXIAL |
TRANSVERSE |
| ± 5 |
±0.5 mm (±0.025 in.) |
| ± 10 |
±1.0 mm (±0.05 in.) |
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example: 10% strain in a 50 mm gage length
version
results in total measuring range of 5 mm.
Temperature Ranges:
| Low: -265 to + 100 C (-450
to +210 F) |
| Standard: -40 to +100 C (-40 to +210
F) |
| High 1: -40 to +150 C (-40 to +300
F) |
| High 21: -40 to +175 C (-40 to +350
F) |
Notes:
1Short term use to +200 C (400 F) acceptable
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