ASTM D5961/D5961M-01e1

Standard Test Method for Bearing Response of Polymer Matrix Composite Laminates

SCOPE
1.1 This test method determines the bearing response of multi-directional polymer matrix composite laminates reinforced by high-modulus fibers by either double-shear (Procedure A) or single-shear (Procedure B) tensile loading of a specimen. Standard specimen configurations using fixed values of test parameters are described for each procedure. However, when fully documented in the test report, a number of test parameters may be optionally varied. The composite material forms are limited to continuous-fiber or discontinuous-fiber (tape or fabric, or both) reinforced composites for which the laminate is balanced and symmetric with respect to the test direction. The range of acceptable test laminates and thicknesses are described in 8.2.1.
1.2 This test method is consistent with the recommendations of MIL-HDBK-17, which describes the desirable attributes of a bearing response test method.
1.3 The multi-fastener test configurations described in this test method are similar to those used by industry to investigate the bypass portion of the bearing bypass interaction response for bolted joints, where the specimen may produce either a bearing failure mode or a bypass failure mode. While this test method may be referenced as guidance in bearing bypass test programs, the scope of this test method is limited to bearing failure modes.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text the inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
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.

General Information

• Status: Historical
• Publication Date: 09-Sep-2001
• ICS: 83.120 - Reinforced plastics
• Technical Committee: D30 - Composite Materials
• Drafting Committee: D30.05 - Structural Test Methods

Relations

• Replaces: ASTM D5961/D5961M-01 - Standard Test Method for Bearing Response of Polymer Matrix Composite Laminates
• Effective Date: 10-Sep-2001
• Replaced By: ASTM D5961/D5961M-05 - Standard Test Method for Bearing Response of Polymer Matrix Composite Laminates
• Effective Date: 01-Mar-2005
• Referred By: ASTM D6873/D6873M-23 - Standard Practice for Bearing Fatigue Response of Polymer Matrix Composite Laminates
• Effective Date: 10-Sep-2001
• Referred By: ASTM D4762-18 - Standard Guide for Testing Polymer Matrix Composite Materials
• Effective Date: 10-Sep-2001
• Referred By: ASTM D6856/D6856M-03(2016) - Standard Guide for Testing Fabric-Reinforced “Textile” Composite Materials
• Effective Date: 10-Sep-2001
• Referred By: ASTM C273/C273M-20 - Standard Test Method for Shear Properties of Sandwich Core Materials
• Effective Date: 10-Sep-2001
• Referred By: ASTM D8387/D8387M-21 - Standard Test Method for High Bypass – Low Bearing Interaction Response of Polymer Matrix Composite Laminates
• Effective Date: 10-Sep-2001
• Referred By: ASTM D8509/D8509M-23 - Standard Guide for Test Method Selection and Test Specimen Design for Bolted Joint Related Properties
• Effective Date: 10-Sep-2001

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
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Designation:D5961/D5961M–01
Standard Test Method for
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Bearing Response of Polymer Matrix Composite Laminates
This standard is issued under the fixed designation D 5961/D 5961M; 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.
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e NOTE—Equation 5 was editorially corrected in February 2003.
1. Scope 2. Referenced Documents
1.1 This test method determines the bearing response of 2.1 ASTM Standards:
multi-directional polymer matrix composite laminates rein- D 792 TestMethodsforDensityandSpecificGravity(Rela-
2
forced by high-modulus fibers by either double-shear (Proce- tive Density) of Plastics by Displacement
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dure A) or single-shear (Procedure B) tensile loading of a D 883 Terminology Relating to Plastics
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specimen.Standardspecimenconfigurationsusingfixedvalues D 953 Test Method for Bearing Strength of Plastics
of test parameters are described for each procedure. However, D 2584 Test Method for Ignition Loss of Cured Reinforced
3
when fully documented in the test report, a number of test Resins
parameters may be optionally varied. The composite material D 2734 Test Method for Void Content of Reinforced Plas-
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forms are limited to continuous-fiber or discontinuous-fiber tics
(tape or fabric, or both) reinforced composites for which the D 3171 Test Method for Constituent Content of Composite
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laminate is balanced and symmetric with respect to the test Materials
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direction. The range of acceptable test laminates and thick- D 3878 Terminology for Composite Materials
nesses are described in 8.2.1. D 5229/D 5229M Test Method for Moisture Absorption
1.2 Thistestmethodisconsistentwiththerecommendations Properties and Equilibrium Conditioning of Polymer Ma-
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of MIL-HDBK-17, which describes the desirable attributes of trix Composite Materials
a bearing response test method. D 5687/D 5687M Guide for Preparation of Flat Composite
1.3 The multi-fastener test configurations described in this Panels with Processing Guidelines for Specimen Prepara-
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test method are similar to those used by industry to investigate tion
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the bypass portion of the bearing bypass interaction response E 4 Practices for Force Verification of Testing Machines
for bolted joints, where the specimen may produce either a E 6 Terminology Relating to Methods of Mechanical Test-
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bearing failure mode or a bypass failure mode. While this test ing
method may be referenced as guidance in bearing bypass test E 83 Practice for Verification and Classification of Exten-
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programs, the scope of this test method is limited to bearing someters
failure modes. E 122 Practice for Calculating Sample Size to Estimate,
1.4 The values stated in either SI units or inch-pound units With a Specified Tolerable Error, the Average for a
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are to be regarded separately as standard. Within the text the Characteristic of a Lot or Process
inch-pound units are shown in brackets. The values stated in E 177 Practice for Use of the Terms Precision and Bias in
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each system are not exact equivalents; therefore, each system ASTM Test Methods
must be used independently of the other. Combining values E 238 Test Method for Pin-Type Bearing Test of Metallic
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from the two systems may result in nonconformance with the Materials
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standard. E 456 Terminology Relating to Quality and Statistics
1.5 This standard does not purport to address all of the E 1309 Guide for Identification of Fiber-Reinforced
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safety concerns, if any, associated with its use. It is the Polymer-Matrix Composite Materials in Databases
responsibility of the user of this standard to establish appro- E 1434 GuideforRecordingMechanicalTestDataofFiber-
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priate safety and health practices and determine the applica- Reinforced Composite Materials in Databases
bility of regulatory limitations prior to use.
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This test method is under the jurisdiction of ASTM Committee D30 on Annual Book of ASTM Standards, Vol 08.01.
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Composite Materials and is the direct responsibility of Subcommittee D30.05 on Annual Book of ASTM Standards, Vol 08.02.
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Structural Test Methods. Annual Book of ASTM Standards, Vol 15.03.
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Current edition approved Sept. 10, 2001. Published November 2001. Originally Annual Book of ASTM Standards, Vol 03.01.
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published as D 5961/D 5961M – 96. Last previous edition D 5961/D 5961M – 96. 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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D5961/D5961M–01
E 1471 Guide for Identification of Fibers, Fillers, and Core 3.10.1 Discussion—The
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