ASTM D5026-01
(Test Method)Standard Test Method for Plastics: Dynamic Mechanical Properties: In Tension
Standard Test Method for Plastics: Dynamic Mechanical Properties: In Tension
SCOPE
1.1 This test method covers the use of dynamic mechanical instrumentation for gathering and reporting the visco-elastic properties of thermoplastic and thermosetting resins and composite systems in the form of rectangular specimens molded directly or cut from sheets, plates, or molded shapes. The tensile data generated may be used to identify the thermomechanical properties of a plastics material or composition using a variety of dynamic mechanical instruments.
1.2 This test method is intended to provide means for determining the modulus as a function of temperature of a wide variety of plastics materials using nonresonant forced-vibration techniques, in accordance with Practice D 4065. Plots of the elastic (storage); loss (viscous); and complex moduli and tan delta as a function of frequency, time, or temperature are indicative of significant transitions in the thermomechanical performance of the polymeric material system.
1.3 This test method is valid for a wide range of frequencies, typically from 0.01 to 100 Hz.
1.4 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.
1.5 Due to possible instrumentation compliance, the data generated are intended to indicate relative and not necessarily absolute property values.
1.6 Test data obtained by this test method are relevant and appropriate for use in engineering design.
1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.8 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.
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Standards Content (Sample)
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Designation:D5026–01
Standard Test Method for
1
Plastics: Dynamic Mechanical Properties: In Tension
This standard is issued under the fixed designation D 5026; 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
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1.1 This test method covers the use of dynamic mechanical 2.1 ASTM Standards:
instrumentation for gathering and reporting the visco-elastic D 618 Practice for Conditioning Plastics for Testing
properties of thermoplastic and thermosetting resins and com- D 4000 Classification System for Specifying Plastic Mate-
posite systems in the form of rectangular specimens molded rials
directly or cut from sheets, plates, or molded shapes. The D 4065 Practice for Determining and Reporting Dynamic
tensile data generated may be used to identify the thermome- Mechanical Properties of Plastics
chanical properties of a plastics material or composition using D 4092 Terminology Relating to Dynamic Mechanical
a variety of dynamic mechanical instruments. Measurements on Plastics
1.2 This test method is intended to provide means for IEEE/ASTM SI-10 Practice for Use of the International
determiningthemodulusasafunctionoftemperatureofawide System of Units (SI) (the Modernized Metric System)
varietyofplasticsmaterialsusingnonresonantforced-vibration
3. Terminology
techniques, in accordance with Practice D 4065. Plots of the
elastic (storage); loss (viscous); and complex moduli and tan 3.1 Definitions—For definitions applicable to this test
method refer to Terminology D 4092.
delta as a function of frequency, time, or temperature are
indicative of significant transitions in the thermomechanical
4. Summary of Test Method
performance of the polymeric material system.
4.1 This test method covers the determination of the tensile
1.3 Thistestmethodisvalidforawiderangeoffrequencies,
modulus of a plastics material using dynamic mechanical
typically from 0.01 to 100 Hz.
techniques. A test specimen of rectangular cross section is
1.4 Apparent discrepancies may arise in results obtained
tested in dynamic tension. The specimen is gripped longitudi-
under differing experimental conditions. These apparent differ-
nally between two clamps. The specimen of known geometry
ences from results observed in another study can usually be
is placed in mechanical linear tensile displacement at fixed
reconciled,withoutchangingtheobserveddata,byreportingin
frequencies at either isothermal conditions or with a linear
full (as described in this test method) the conditions under
temperature increase. The elastic moduli or loss moduli, or
which the data were obtained.
both,ofthepolymericmaterialsystemaremeasuredintension.
1.5 Due to possible instrumentation compliance, the data
generated are intended to indicate relative and not necessarily
NOTE 2—The particular method for measurement of the elastic and loss
absolute property values.
moduli and tan delta depends upon the individual instrument’s operating
1.6 Test data obtained by this test method are relevant and
principles.
appropriate for use in engineering design.
5. Significance and Use
1.7 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information 5.1 This test method provides a simple means of character-
only. izing the thermomechanical behavior of plastics materials
1.8 This standard does not purport to address all of the using very small amounts of material. The data obtained may
safety concerns, if any, associated with its use. It is the be used for quality control, research and development, and
responsibility of the user of this standard to establish appro- establishment of optimum processing conditions.
priate safety and health practices and determine the applica- 5.2 Dynamic mechanical testing provides a sensitive
bility of regulatory limitations prior to use. method for determining thermomechanical characteristics by
measuring the elastic and loss moduli as a function of
NOTE 1—There is no similar or equivalent ISO standard.
1 2
This test method is under the jurisdiction ofASTM Committee D20 on Plastics For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and is the direct responsibility of Subcommittee D20.10 on Mechanical Properties. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved September 10, 2001. Published November 2001. Standards volume information, refer to the standard’s Document Summary page on
Originally published as D 5026 – 89. Last previous edition D 5026 – 95a. the ASTM website.
*A Summary of Changes section appear
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