ASTM D5934-02
(Test Method)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of Elasticity for Rigid and Semi-Rigid Plastic Specimens by Controlled Rate of Loading Using Three-Point Bending (Withdrawn 2009)
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of Elasticity for Rigid and Semi-Rigid Plastic Specimens by Controlled Rate of Loading Using Three-Point Bending (Withdrawn 2009)
SIGNIFICANCE AND USE
This test method provides a simple means of characterizing the mechanical behavior of plastics materials using very small amounts of material. The data obtained may be used for quality control, research and development, and establishment of optimum processing conditions.
Mechanical testing provides a sensitive test method for determining mechanical characteristics by measuring the modulus of elasticity.
Note 2—Materials that are suspected to be too anisotropic may not be suitable for this test method.
This test method can be used to assess:
5.3.1 The effects of processing treatment,
5.3.2 Relative resin behavioral properties, including cure,
5.3.3 The effects of substrate types and orientation (fabrication) on modulus, and
5.3.4 The effects of formulation additives that might affect processability or performance.
SCOPE
1.1 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.
1.2 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.
1.3 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.
1.4 The values stated in SI units are to be regarded as the standard. The values stated in parentheses are for information only.
1.5 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.
WITHDRAWN RATIONALE
This test method covered 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 have been comparable to results obtained using Test Methods D 790.
Formerly under the jurisdiction of Committee D20 on Plastics, this test method was withdrawn in September 2009 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D5934–02
Standard Test Method for
Determination of Modulus of Elasticity for Rigid and Semi-
Rigid Plastic Specimens by Controlled Rate of Loading
1
Using Three-Point Bending
This standard is issued under the fixed designation D 5934; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
1.1 This test method covers the use of controlled rate of 2.1 ASTM Standards:
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loadingmechanicalinstrumentationforgatheringandreporting D 618 Practice for Conditioning Plastics for Testing
3
the modulus of elasticity of thermoplastic and thermosetting D 638 Test Method for Tensile Properties of Plastics
3
resins and composite systems in the form of rectangular bars D 883 Terminology Relating to Plastics
molded directly or cut from sheets, plates, or molded shapes. D 1999 Guide for the Selection of Specimens and Test
4
The data generated, using three-point bending techniques, may Parameters from ISO/IEC Standards
be used to identify the thermomechanical properties of a D 4092 Terminology for Plastics: Dynamic Mechanical
5
plastics material or composition using a controlled rate of Properties
2
loadingmechanicalinstrument. Resultsobtainedfromthistest E 177 Practice for the Use of the Terms Precision and Bias
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method may or may not be comparable to results obtained in ASTM Test Methods
using D 790.
3. Terminology
1.2 This test method is intended to provide a means for
determining the modulus of elasticity within the linear region 3.1 Definitions: Definitions of terms applying to these test
methods appear in Terminologies D 883 and D 4092, and
of the stress-strain curve (see Fig. 1). This test is conducted at
standard temperature and pressure. Annex A1 and Annex A2 of Test Method D 638.
1.3 Apparent discrepancies may arise in results obtained
4. Summary of Test Method
under differing experimental conditions. These apparent differ-
4.1 A specimen of rectangular cross section is tested in
ences from results observed in another study can usually be
flexure as a beam. The bar rests on two supports and is loaded
reconciled, without changing the observed data, by reporting in
by means of a loading nose midway between the supports. The
full (as described in this test method) the conditions under
test specimen of known geometry is placed under mechanical
which the data were obtained.
linear displacement at isothermal conditions by using a con-
1.4 The values stated in SI units are to be regarded as the
trolled rate of loading. The modulus of elasticity is measured
standard. The values stated in parentheses are for information
using three-point bending.
only.
1.5 This standard does not purport to address all of the
5. Significance and Use
safety concerns, if any, associated with its use. It is the
5.1 This test method provides a simple means of character-
responsibility of the user of this standard to establish appro-
izing the mechanical behavior of plastics materials using very
priate safety and health practices and determine the applica-
small amounts of material. The data obtained may be used for
bility of regulatory limitations prior to use.
quality control, research and development, and establishment
NOTE 1—There is no similar or equivalent ISO standard.
of optimum processing conditions.
5.2 Mechanical testing provides a sensitive test method for
determining mechanical characteristics by measuring the
modulus of elasticity.
1
This test method is under the jurisdiction ofASTM Committee D20 on Plastics
and is the direct responsibility of Subcommittee D20.10 on Mechanical Properties.
3
Current edition approved April 10, 2002. Published June 2002. Originally Annual Book of ASTM Standards, Vol 08.01.
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published as D 5934 – 96. Last previous edition D 5934 – 96. Discontinued; see 1999 Annual Book of ASTM Standards, Vol 08.01.
2 5
This apparatus is available from the Perkin-Elmer Corporation, 761 Main Annual Book of ASTM Standards, Vol 08.02.
6
Avenue, Norwalk, CT 06859-0256. Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5934
Dimensions
Dimen- Tolerance,6
Description Symbol sion, ,
mm mm
Support span L 20.0 0.1
1
Loading nose ra- r 3.0 0.5
dius
2
Support radius r 1.0 0.1
FIG. 2 Loading Members
FIG. 1 Stress-Strain Curve (Linear Region)
7.3.1 Temperature Controller and Oven—Adevice for con-
trolling the temperature, either by heating (in steps or ramps),
NOTE 2—Materials that are suspected to be too anisotropic may not be
...
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