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Chapter 1
Introduction
General Description
Instron Dynamic Strain Gauge
Extensometers are accurate, lightweight
strain gauge units used for accurate direct
measurement and closed-loop control of
strain in cyclic high frequency materials
testing applications. Tensile, compressive,
low and high cycle fatigue testing as well as
straight line (ramp) testing may be performed
with these devices.
They are designed for use with metals, rigid
thermoplastic and thermosetting polymers
and other materials exhibiting total strains up
to ±60% of the original gauge length.
Variations of gauge length and percentage
strain levels may be achieved by the addition
of gauge length extenders.
The extensometers have wide frequency
response and high accuracy for use in both
tension and compression and can be operated
over an ambient temperature range of -80ºC
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