ASTM D 5934 Standard Test Method for Determination of Modulus of Elasticity for Rigid and Semi-Rigid Plastic Specimens by Controlled Rate of Loading Using Three-Point Bending
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ASTM D 5934 Document Information:
Title
Standard Test Method for Determination of Modulus of Elasticity for Rigid and Semi-Rigid Plastic Specimens by Controlled Rate of Loading Using Three-Point Bending
ASTM International
Publication Date:
Apr 10, 2002
Scope:
This test method covers the use of controlled rate of loading
mechanical instrumentation for
gathering and reporting the modulus of elasticity of thermoplastic and
thermosetting resins and
composite systems in the form of rectangular bars molded directly or
cut from sheets, plates, or
molded shapes. The data generated, using three-point bending
techniques, may be used to identify
the thermomechanical properties of a plastics material or composition
using a controlled rate of
loading mechanical instrument. Results obtained from this test method
may or may not be comparable
to results obtained using D 790.
This test method is intended to provide a means for determining the
modulus of elasticity within
the linear region of the stress-strain curve (see Fig. 1). This test
is conducted at standard
temperature and pressure.
Apparent discrepancies may arise in results obtained under differing
experimental conditions. These
apparent differences from results observed in another study can
usually be reconciled, without
changing the observed data, by reporting in full (as described in this
test method) the conditions
under which the data were obtained.
The values stated in SI units are to be regarded as the standard. The
values stated in parentheses
are for information only.
This standard does not purport to address all of the safety concerns,
if any, associated with its
use. It is the responsibility of the user of this standard to
establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.
NOTE 1 - There is no similar or equivalent ISO standard.
Keywords:
- elasticity
- modulus
- plastics
- rigid
- plastics
- semi-rigid
- three-point bending
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