Standard Practice for Plastics: Dynamic Mechanical Properties: Determination and Report of Procedures

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1.1 This practice is for general use in gathering and reporting dynamic mechanical data. It incorporates laboratory practice for determining dynamic mechanical properties of specimens subjected to various oscillatory deformations on a variety of instruments of the type commonly called dynamic mechanical analyzers or dynamic thermomechanical analyzers.
1.2 This practice is intended to provide means of determining the transition temperatures, elastic, and loss moduli of plastics over a range of temperatures, frequencies, or time, by free vibration and resonant or nonresonant forced vibration techniques. Plots of elastic and loss moduli are indicative of the viscoelastic characteristics of a plastic. These moduli are functions of temperature or frequency in plastics, and change rapidly at particular temperatures or frequencies. The regions of rapid moduli change are normally referred to as transition regions.
1.3 The practice is primarily useful when conducted over a range of temperatures from -160°C to polymer degradation and is valid for frequencies from 0.01 to 1000 Hz.
1.4 This practice is intended for materials that have an elastic modulus in the range from 0.5 MPa to 100 GPa (73 psi to 1.5 x 10 7  psi).
1.5 Apparent discrepancies may arise in results obtained under differing experimental conditions. Without changing the observed data, reporting in full (as described in this practice) the conditions under which the data were obtained will enable apparent differences observed in another study to be reconciled.
1.6 Test data obtained by this practice 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.
1.6 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 practice to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section 8.
Note 1—This practice is technically equivalent to ISO 6721, Part 1.

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09-Sep-2001
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Designation:D4065–01
Standard Practice for
Plastics: Dynamic Mechanical Properties: Determination and
1
Report of Procedures
This standard is issued under the fixed designation D4065; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* responsibility of the user of this practice to establish appro-
priate safety and health practices and determine the applica-
1.1 This practice is for general use in gathering and report-
bility of regulatory limitations prior to use. Specific hazards
ing dynamic mechanical data. It incorporates laboratory prac-
statements are given in Section 8.
tice for determining dynamic mechanical properties of speci-
menssubjectedtovariousoscillatorydeformationsonavariety
NOTE 1—This practice is technically equivalent to ISO6721, Part 1.
of instruments of the type commonly called dynamic mechani-
2. Referenced Documents
cal analyzers or dynamic thermomechanical analyzers.
1.2 This practice is intended to provide means of determin-
2.1 ASTM Standards:
ing the transition temperatures, elastic, and loss moduli of
D618 Practice for Conditioning Plastics and Electrical
2
plastics over a range of temperatures, frequencies, or time, by
Insulating Materials for Testing
free vibration and resonant or nonresonant forced vibration
D4000 Classification System for Specifying Plastic Mate-
3
techniques.Plotsofelasticandlossmoduliareindicativeofthe
rials
viscoelastic characteristics of a plastic. These moduli are
D 4092 Terminology Relating to Dynamic Mechanical
3
functions of temperature or frequency in plastics, and change
Measurements on Plastics
rapidly at particular temperatures or frequencies. The regions
2.2 ISO Standard:
of rapid moduli change are normally referred to as transition
ISO 6721, Part 1 Plastics— Determination of Dynamic
4
regions.
Mechanical Properties, Part 1, General Principles
1.3 The practice is primarily useful when conducted over a
3. Terminology
range of temperatures from−160°C to polymer degradation
and is valid for frequencies from 0.01 to 1000 Hz. 3.1 Definitions—For definitions of terms relating to this
1.4 This practice is intended for materials that have an
practice, see Terminology D4092.
elastic modulus in the range from 0.5 MPa to 100 GPa (73 psi
7
4. Summary of Practice
to 1.5 310 psi).
1.5 Apparent discrepancies may arise in results obtained 4.1 Aspecimen of known geometry is placed in mechanical
under differing experimental conditions. Without changing the oscillation either at fixed or natural resonant frequencies.
observed data, reporting in full (as described in this practice) Elastic or loss moduli, or both of the specimen are measured
the conditions under which the data were obtained will enable while varying time, temperature of the specimen or frequency,
apparent differences observed in another study to be recon- orboth,oftheoscillation.Plotsoftheelasticorlossmoduli,or
ciled. both, are indicative of viscoelastic characteristics of the speci-
1.6 Test data obtained by this practice are relevant and men. Rapid changes in viscoelastic properties at particular
appropriate for use in engineering design. temperatures, times, or frequency are normally referred to as
1.7 The values stated in SI units are to be regarded as the transition regions.
standard. The values given in parentheses are for information
NOTE 2—The particular method for measurement of elastic and loss
only.
moduli depends upon the operating principle of the instrument used.
1.8 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1 2
ThispracticeisunderthejurisdictionofASTMCommitteeD20onPlasticsand Annual Book of ASTM Standards, Vol 08.01.
3
is the direct responsibility of Subcommittee D20.10 on Mechanical Properties. Annual Book of ASTM Standards, Vol 08.02.
4
Current edition approved September 10, 2001. Published November 2001. Available from American National Standards Institute, 25 W. 43rd St., New
Originally published as D4065–82. Last previous edition D4065–95. York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D4065–01
5. Significance and Use 7.2.2 Oscillatory Deformation (Strain)—A device for ap-
plying an oscillatory deformation (strain) to the specimen.The
5.1 Dynamic mechanical testing provides a method for
deformation (strain) may b
...

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