simultaneously measuring axial and torsional deflections
on specimens tested in axial/torsional machines.
This model extensometer is most often used on round
specimens tested in bi-axial test machines capable of
simultaneous axial and torsional loading. The extensometer
is often customized for particular applications. All
units are capable of bi-directional travel, so they
may be used for cyclic testing under fully reversed
Models are available for use in materials testing furnaces
and with induction heating, provided with high purity
alumina rods for specimen contact. These are externally
supported and use a special bracket for load frame mounting.
Other models are self supporting on the specimen and
used for room temperature testing.
All models are designed specifically to minimize crosstalk
between axes and to provide high accuracy measurements.
All feature the strong, dual flexure design common to
other Epsilon extensometers.
Because these transducers are so often used for specialized
tests, contact Epsilon with your specific test needs.
We can then recommend the ideal configuration specifically
for your tests.
Linearity: Depends on
model, generally within 0.15%
Output: 2 to 4 mV/V, depending on model
Excitation: 10 VDC typical, 15 VDC or VAC max.
Cable: ultra-flexible cable, 8 ft (2.5 m) standard
directly measures the surface shear strain angle. Allows operation
on a wide range of specimen diameters without changing calibration.
This model is features a 1 inch gage length, with ±10% axial
strain and ±2.5° torsional shear strain angle (note this corresponds
to a 10° angle of twist on a 0.5 inch diameter specimen).
This model is self-supporting on the specimen and works on
specimen diameters from 0.375 to 1.25 inches. It features
rugged strain gaged design, with both axial and torsional
strain averaged on opposite sides. Available options cover
temperature ranges from -265 to +175 °C (-40 to +100 °C standard).
Metric versions available.
300 Buttertown Road
Emlenton, PA 16373
(724) 867-6664 or (800) 793-1870
FAX (724) 867-1346