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ASTM D5418-99

(Test Method)

Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Dual Cantilever Beam)

Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Dual Cantilever Beam)

SCOPE
1.1 This test method covers the use of dynamic mechanical instrumentation for gathering and reporting the viscoelastic properties 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 elastic modulus data generated may be used to identify the thermomechanical properties of a plastics material or composition.
1.2 This test method is intended to provide means for determining the modulus as a function of temperature of plastics using nonresonant forced-vibration techniques, as outlined in 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 Test data obtained by this test method are relevant and appropriate for use in engineering design.
1.6 The values stated in SI units are to be regarded as standard.
1.7 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.

General Information

Status
Historical
Publication Date
09-Sep-2001
ICS
83.140.01 - Rubber and plastics products in general
Technical Committee
D20 - Plastics
Drafting Committee
D20.10 - Mechanical Properties
Current Stage
Ref Project

Relations

Replaced By
ASTM D5418-01 - Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Dual Cantilever Beam)
Effective Date
10-Sep-2001
Referred By
ASTM D4065-20 - Standard Practice for Plastics: Dynamic Mechanical Properties: Determination and Report of Procedures
Effective Date
10-Sep-2001
Referred By
ASTM D6382/D6382M-99(2022) - Standard Practice for Dynamic Mechanical Analysis and Thermogravimetry of Roofing and Waterproofing Membrane Material
Effective Date
10-Sep-2001

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ASTM D5418-99 - Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Dual Cantilever Beam)ASTM D5418-99 - Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Dual Cantilever Beam)
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ASTM D5418-99 - Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Dual Cantilever Beam)
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 5418 – 99 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Measuring the Dynamic Mechanical Properties of Plastics
1
Using a Dual Cantilever Beam
This standard is issued under the fixed designation D 5418; 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.
2
1. Scope Mechanical Properties of Plastics
D 4092 Terminology Relating to Dynamic Mechanical
1.1 This test method covers the use of dynamic mechanical
2
Measurements on Plastics
instrumentation for gathering and reporting the viscoelastic
D 5279 Test Method for Measuring the Dynamic Mechani-
properties of thermoplastic and thermosetting resins and com-
3
cal Properties of Plastics in Torsion
posite systems in the form of rectangular bars molded directly
or cut from sheets, plates, or molded shapes. The elastic
3. Terminology
modulus data generated may be used to identify the thermo-
3.1 For definitions applicable to this practice see Terminol-
mechanical properties of a plastics material or composition.
ogy D 4092.
1.2 This test method is intended to provide means for
determining the modulus as a function of temperature of
4. Summary of Test Method
plastics using nonresonant forced-vibration techniques, as
4.1 This test method covers the determination of the elastic
outlined in Practice D 4065. Plots of the elastic (storage), loss
modulus of plastics using dynamic mechanical techniques. A
(viscous) and complex moduli, and tan delta as a function of
bar of rectangular cross section is tested as a beam in dynamic
frequency, time, or temperature are indicative of significant
linear displacement or bending. The dual-cantilever beam
transitions in the thermomechanical performance of the poly-
specimen is gripped between two clamps. The specimen of
meric material system.
known geometry is placed in mechanical linear displacement,
1.3 This test method is valid for a wide range of frequencies,
with the displacement strain or deformation applied at the
typically from 0.01 to 100 Hz.
center of the dual-cantilever beam. The forced-strain displace-
1.4 Apparent discrepancies may arise in results obtained
ment is at either a fixed frequency, or variable frequencies at
under differing experimental conditions. These apparent differ-
either isothermal condition, or with a linear temperature
ences from results observed in another study can usually be
increase. The elastic or loss modulus, or both, of the polymeric
reconciled, without changing the observed data, by reporting in
4
material system are measured in flexure.
full (as described in this test method) the conditions under
which the data were obtained.
5. Significance and Use
1.5 Test data obtained by this test method is relevant and
5.1 This test method provides a simple means of character-
appropriate for use in engineering design.
izing the thermomechanical behavior of plastics materials
1.6 The values stated in SI units are to be regarded as
using a very small amount of material. Since small test
standard.
specimen geometries are used, it is essential that the specimens
1.7 This standard does not purport to address all of the
be representative of the material being tested. The data
safety concerns, if any, associated with its use. It is the
obtained may be used for quality control, research and devel-
responsibility of the user of this standard to establish appro-
opment, and 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
NOTE 1—There is no similar or equivalent ISO standard.
measuring the elastic and loss moduli as a function of
frequency, temperature, or time. Plots of moduli and tan delta
2. Referenced Documents
of a material versus temperature provide graphic representa-
2.1 ASTM Standards:
tions indicative of functional properties, effectiveness of cure
D 4065 Practice for Determining and Reporting Dynamic
(thermosetting-resin systems), and damping behavior under
specified conditions.
1 2
This test method is under the jurisdiction of ASTM Committee D-20 on Plastics Annual Book of ASTM Standards, Vol 08.02.
3
and is the direct responsibility of Subcommittee D20.10 on Mechanical Properties. Annual Book of ASTM Standards, Vol 08.03.
4
Current edition approved March 10, 1999. Published June 1999. Originally The pa
...

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ASTM D6112-23(Test Method)
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1.1 These test methods cover the determination of the creep and creep-rupture properties of plastic lumber and shapes, when loaded in compression or flexure under specified environmental conditions. Test specimens in the “as-manufactured” form are employed. As such, these are test methods for evaluating the properties of plastic lumber or shapes as a product and not material property test methods.  
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ASTM D5418-23(Test Method)
Standard Test Method for Plastics: Dynamic Mechanical Properties: In Flexure (Dual Cantilever Beam)

SIGNIFICANCE AND USE
5.1 This test method provides a simple means of characterizing the thermomechanical behavior of plastic compositions using a very small amount of material. Since small test specimen geometries are used, it is essential that the specimens be representative of the material being tested. The data obtained can be used for quality control and/or research and development purposes. For some classes of materials, such as thermosets, it can also be used to establish optimum processing conditions.  
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1.1 This test method outlines the use of dynamic mechanical instrumentation for determining and reporting the viscoelastic properties 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 elastic modulus data generated is used to identify the thermomechanical properties of a plastics material or composition.  
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SIGNIFICANCE AND USE
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1.1 This specification covers a type of plastic lumber product, defined as polyethylene-based structural-grade plastic lumber (SGPL), for use as main framing members, including joists, stringers, beams, columns; and secondary framing members, including planking, posts and bracing; in outdoor structures such as decks, boardwalks, docks, and platforms.  
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1.6.1 The cross-section non-homogeneity is addressed in the material property assessments in this document only for applications in which the product cross-section is not modified by cutting, notching, or drilling. For products modified in this manner, additional engineering considerations are required and they are beyond the scope of this document.  
1.7 For purposes of this standard, an SGPL product is a specific combination of polyethylene resin, together with fillers, reinforcements, and additives. Each formulation is to be identified as a distinct and different product, to be tested and evaluated separately.  
1.8 Diverse and multiple combinations of both virgin and recycled polyethylene material systems are permitted in the manufacture of SGPL products.  
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1.10 A wide variety of chemical additives are typically added to SGPL formulations. Examples include colorants, chemical foaming agents, ultraviolet stabilizers, fire retardants, lubricants, anti-static products, heat stabilizers, and coupling agents.  
1.11 Diverse types and combinations of filler systems are permitted in the manufacturing of SGPL products. Fillers that cause the product to fail the requirements of 6.13 are not permitted in the manufacturing of SGPL products.  
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1.14 Products that fail at strains of less than 0.02 (2 %) when tested in flexure in accordance with 6.6 are not compatible with the underlying assumptions of Annex A1 and are beyond the scope of this standard (see Note 1).
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4.1.1 Fig. 1 and Table 1 present the appropriate information on the way the RIC is to be incorporated onto the product and the available resin identification designations.
FIG. 1 Example of a Resin Identification Marker  
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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 standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: There is no known ISO equivalent to this standard.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

  • Standard
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  • Standard
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ASTM
ASTM D8366-21a(Specification)
Standard Specification for Extruded and Compression Molded Shapes Made from Unfilled Poly(Vinylidene Fluoride) PVDF

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1.1 This specification covers the requirements and test methods for the material, dimensions, workmanship, and the properties of extruded sheet, rod and tubular bar manufactured from unfilled PVDF.  
1.2 This specification covers the requirements and test methods for the material, dimensions, workmanship, and the properties of extruded and compression molded shapes manufactured from unfilled PVDF.  
1.3 The properties included in this specification are those required for shapes made from PVDF polymers. Requirements necessary to identify particular characteristics of the shape are included in Section 5.  
1.4 This specification allows for the use of up to 20 % process regrind and reprocessed plastic, total, and of uncontaminated quality.  
1.5 The values stated in English Units are to be regarded as the standard in all property and dimensional tables. For reference purposes, SI units are also included.  
1.6 The following safety hazards caveat pertains only to the test method or test methods described in this specification. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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  • Technical specification
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