ASTM D953-19
(Test Method)Standard Test Method for Pin-Bearing Strength of Plastics
Standard Test Method for Pin-Bearing Strength of Plastics
SIGNIFICANCE AND USE
5.1 This pin-bearing strength test for plastics is intended to apply in the specification of various thermoplastic or thermosetting products in sheet form where rivets, bolts, or similar fastenings are to be used in joining members or sections. It also is intended to apply wherever sheet materials of the classes indicated are required to sustain edgewise loads that are applied by means of pins or rods of circular cross section which pierce the sheet perpendicular to the surface.
5.2 The purpose of the test using procedures A and B is to determine the pin-bearing strength of thermoplastic material and to plot the pin-bearing stress versus the deformation of the hole. The allowable deformation of the hole in the material shall be such as to produce no looseness of joints.
5.3 The purpose of procedure C is to determine the ultimate pin-bearing strength of reinforced thermoset material. This test procedure enables the user to test the part in any direction that is intended to carry the pin-bearing loads. The sample size used in this procedure will cover thermoset reinforced plastics that are commonly used in infrastructure applications.
5.4 While it is a known fact that higher strength materials will generally give higher bearing strengths, there is no satisfactory method to estimate pin-bearing strength from tensile or compressive properties of the material.
5.5 Before proceeding with this test method, reference shall be made to the specification of the material being tested. Any test specimen preparation, conditioning, dimensions or testing parameters or combination thereof covered in the relevant ASTM materials specification shall take precedence over those in this test method. If there are no relevant ASTM material specifications then the default conditions apply.
SCOPE
1.1 This test method covers the determination of the pin-bearing strength of rigid plastics in either sheet form, molded form, or in reinforced thermoset form. Procedures A and B are applicable for thermoplastic materials in tension loading and compression loading respectively. Procedure C is applicable for thermoset reinforced plastics. See the significance and use section (Section 5) for cautions in using this test standard.
1.2 Test data obtained by this test method is relevant and appropriate for use in quality control and engineering design.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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: This standard and ISO 12815 address the same subject matter, but differ in technical content.
1.5 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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Standards Content (Sample)
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.
Designation: D953 − 19
Standard Test Method for
1
Pin-Bearing Strength of Plastics
This standard is issued under the fixed designation D953; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* D5947Test Methods for Physical Dimensions of Solid
Plastics Specimens
1.1 This test method covers the determination of the pin-
D7290Practice for Evaluating Material Property Character-
bearing strength of rigid plastics in either sheet form, molded
isticValues for Polymeric Composites for Civil Engineer-
form, or in reinforced thermoset form. ProceduresAand B are
ing Structural Applications
applicable for thermoplastic materials in tension loading and
E4Practices for Force Verification of Testing Machines
compression loading respectively. Procedure C is applicable
E177Practice for Use of the Terms Precision and Bias in
for thermoset reinforced plastics. See the significance and use
ASTM Test Methods
section (Section 5) for cautions in using this test standard.
E6Terminology Relating to Methods of MechanicalTesting
1.2 Test data obtained by this test method is relevant and
E691Practice for Conducting an Interlaboratory Study to
appropriate for use in quality control and engineering design.
Determine the Precision of a Test Method
2.2 ISO Standards:
1.3 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information ISO 12815 Fibre-reinforced plastic composites—
3
Determination of plain-pin bearing strength
only.
1.4 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions—For definitions of technical terms used in
responsibility of the user of this standard to establish appro-
this test method and associated with plastics issues refer to
priate safety, health, and environmental practices and deter-
terminology contained in ASTM D883.
mine the applicability of regulatory limitations prior to use.
4
3.2 Definitions of Terms Specific to This Standard:
NOTE1—ThisstandardandISO12815addressthesamesubjectmatter,
3.2.1 pin-bearing area—the diameter of the hole multiplied
but differ in technical content.
by the thickness of the specimen.
1.5 This international standard was developed in accor-
3.2.2 pin-bearing strength—the pin-bearing stress at which
dance with internationally recognized principles on standard-
the pin-bearing hole is deformed 4% of its diameter for
ization established in the Decision on Principles for the
thermoplastics. For thermosets, the pin-bearing strength is the
Development of International Standards, Guides and Recom-
maximum pin-bearing stress at which the sample fails.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3.2.3 pin-bearing stress—the applied load in newtons (or
2 2
pounds-force) divided by the pin-bearing area in mm (or in ).
2. Referenced Documents
3.2.4 edge distance ratio—the distance from the center of
2
2.1 ASTM Standards:
the pin-bearing hole to the edge of the specimen in the
D618Practice for Conditioning Plastics for Testing
direction of loading, divided by the diameter of the hole.
D883Terminology Relating to Plastics
3.2.5 maximum pin-bearing stress—the maximum load in
newtons (or pounds-force) sustained by the specimen, divided
by the bearing area.
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD20onPlastics
and is the direct responsibility of Subcommittee D20.18 on Reinforced Thermoset-
4. Summary of Test Method
ting Plastics.
Current edition approved Nov. 1, 2019. Published December 2019. Originally 4.1 This test standard is intended to test the pin-bearing
approved in 1948. Last previous edition approved in 2018 as D953-18. DOI:
strength of thermoplastic material using procedures A, B and
10.1520/D0953-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Standards volume information, refer to the standard’s Document Summary page on 4th Floor, New York, NY 10036, http://www.ansi.org.
4
the ASTM website. Attention is also directed to Terminology E6.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive,
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D953 − 18 D953 − 19
Standard Test Method for
1
Pin-Bearing Strength of Plastics
This standard is issued under the fixed designation D953; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This test method covers the determination of the pin-bearing strength of rigid plastics in either sheet form, molded form,
or in reinforced thermoset form. Procedures A and B are applicable for thermoplastic materials in tension loading and compression
loading respectively. Procedure C is applicable for thermoset reinforced plastics. See the significance and use section (Section 5)
for cautions in using this test standard.
1.2 Test data obtained by this test method is relevant and appropriate for use in quality control and engineering design.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 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—This standard and ISO 12815 address the same subject matter, but differ in technical content.
1.5 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D883 Terminology Relating to Plastics
D5947 Test Methods for Physical Dimensions of Solid Plastics Specimens
D7290 Practice for Evaluating Material Property Characteristic Values for Polymeric Composites for Civil Engineering
Structural Applications
E4 Practices for Force Verification of Testing Machines
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E6 Terminology Relating to Methods of Mechanical Testing
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 ISO Standards:
3
ISO 12815 Fibre-reinforced plastic composites—Determination of plain-pin bearing strength
3. Terminology
3.1 Definitions—For definitions of technical terms used in this test method and associated with plastics issues refer to
terminology contained in ASTM D883.
4
3.2 Definitions of Terms Specific to This Standard:
1
This test method is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.18 on Reinforced Thermosetting
Plastics.
Current edition approved Nov. 1, 2018Nov. 1, 2019. Published November 2018December 2019. Originally approved in 1948. Last previous edition approved in 20102018
as D953 - 10.D953 - 18. DOI: 10.1520/D0953-18.10.1520/D0953-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Attention is also directed to Terminology E6.
*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
1
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D953 − 19
3.2.1 pin-bearing area—the diameter of the hole multiplied by the thickness of the specimen.
3.2.2 pin-bearing strength—the pin-bearing stress at which the pin-bearing hole is deformed 4 % of its diameter for
thermoplastics. For thermosets, the pin-bearing strength is the maximum pin-bearing stress at which the sample fails.
2 2
3.2.3 pin-bearing stress—the applied load in newtons (or pounds-force) divided by the pin-bearing area in mm (or in ).
3.2.4 edge distance ratio—the distance from the center of the pin-bearing hole to the edge of the specimen in t
...
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