ASTM D7264/D7264M-06

    Standard Test Method for Flexural Properties of Polymer Matrix Composite Materials


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    1. Scope

    1.1 This test method determines the flexural stiffness and strength properties of polymer matrix composites.

    1.1.1 Procedure AA three-point loading system utilizing center loading on a simply supported beam.

    1.1.2 Procedure BA four-point loading system utilizing two load points equally spaced from their adjacent support points, with a distance between load points of one-half of the support span.

    Note 1

    Unlike Test Method D 6272, which allows loading at both one-third and one-half of the support span, in order to standardize geometry and simplify calculations this standard permits loading at only one-half the support span.

    1.2 For comparison purposes, tests may be conducted according to either test procedure, provided that the same procedure is used for all tests, since the two procedures generally give slightly different property values.

    1.3 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.

    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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

    D2344/D2344M Test Method for Short-Beam Strength of Polymer Matrix Composite Materials and Their Laminates

    D3878 Terminology for Composite Materials

    D5229/D5229M Test Method for Moisture Absorption Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials

    D5687/D5687M Guide for Preparation of Flat Composite Panels with Processing Guidelines for Specimen Preparation

    D6272 Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending

    D6856 Guide for Testing Fabric-Reinforced Textile Composite Materials

    E4 Practices for Force Verification of Testing Machines

    E6 Terminology Relating to Methods of Mechanical Testing

    E18 Test Methods for Rockwell Hardness of Metallic Materials

    E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process

    E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods

    E456 Terminology Relating to Quality and Statistics

    E1309 Guide for Identification of Fiber-Reinforced Polymer-Matrix Composite Materials in Databases

    E1434 Guide for Recording Mechanical Test Data of Fiber-Reinforced Composite Materials in Databases

    Other Documents

    ANSIB46.1-1995 Surface Texture (Surface Roughness, Waviness and Lay)


    ICS Code

    ICS Number Code 83.120 (Reinforced plastics)

    UNSPSC Code

    UNSPSC Code


    Referencing This Standard

    DOI: 10.1520/D7264_D7264M-06

    ASTM International is a member of CrossRef.


    Citation Format

    ASTM D7264 / D7264M-06, Standard Test Method for Flexural Properties of Polymer Matrix Composite Materials, ASTM International, West Conshohocken, PA, 2006, www.astm.org

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