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ASTM_D_5379_-_D_5379M_-_12.pdf

1、Designation:D5379/D5379M12Standard Test Method forShear Properties of Composite Materials by the V-NotchedBeam Method1This standard is issued under the fixed designation D5379/D5379M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,th

2、e year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the shear properties of compos-ite materials reinforced by high-modulus fibers.The compos

3、itematerials are limited to continuous-fiber or discontinuous-fiber-reinforced composites in the following material forms:1.1.1 Laminates composed only of unidirectional fibrouslaminae,with the fiber direction oriented either parallel orperpendicular to the loading axis.1.1.2 Laminates composed only

4、 of woven fabric filamentarylaminae with the warp direction oriented either parallel orperpendicular to the loading axis.1.1.3 Laminates composed only of unidirectional fibrouslaminae,containing equal numbers of plies oriented at 0 and90 in a balanced and symmetric stacking sequence,with the 0direct

5、ion oriented either parallel or perpendicular to the loadingaxis.1.1.4 Short-fiber-reinforced composites with a majority ofthe fibers being randomly distributed.NOTE1This shear test concept was originally developed withoutreference to fiber direction for use on isotropic materials such as metals orc

6、eramics.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancew

7、ith the standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2

8、.Referenced Documents2.1 ASTM Standards:2D792 Test Methods for Density and Specific Gravity(Rela-tive Density)of Plastics by DisplacementD883 Terminology Relating to PlasticsD2584 Test Method for Ignition Loss of Cured ReinforcedResinsD2734 Test Methods for Void Content of Reinforced PlasticsD3171 T

9、est Methods for Constituent Content of CompositeMaterialsD3878 Terminology for Composite MaterialsD5229/D5229M Test Method for MoistureAbsorption Prop-erties and Equilibrium Conditioning of Polymer MatrixComposite MaterialsE4 Practices for Force Verification of Testing MachinesE6 Terminology Relatin

10、g to Methods of Mechanical TestingE111 Test Method for Youngs Modulus,Tangent Modulus,and Chord ModulusE122 Practice for Calculating Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or ProcessE177 Practice for Use of the Terms Precision and Bias inASTM Test Me

11、thodsE251 Test Methods for Performance Characteristics of Me-tallic Bonded Resistance Strain GagesE456 Terminology Relating to Quality and StatisticsE1237 Guide for Installing Bonded Resistance Strain Gages2.2 Other Documents:ANSI Y14.5M-1982 Geometric Dimensioning and Toler-ancing3ANSI/ASMEB46.1-19

12、85 Surface Texture(SurfaceRoughness,Waviness,and Lay)32.3 ASTM Adjuncts:V-Notched Beam Shear Fixture Machining Drawings41This test method is under the jurisdiction of ASTM Committee D30 onComposite Materialsand is the direct responsibility of Subcommittee D30.04 onLamina and Laminate Test Methods.Cu

13、rrent edition approved July 15,2012.Published February 2013.Originallyapproved in 1993.Last previous edition approved in 2005 as D5379/D5379M 05.DOI:10.1520/D5379_D5379M-12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annua

14、l Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036.4Available from ASTM International Headquarters.Order Adjunct No.ADJD5379.Copyright ASTM In

15、ternational,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.Terminology3.1 DefinitionsTerminology D3878 defines terms relatingto high-modulus fibers and their composites.TerminologyD883 defines terms relating to plastics.Terminology E6 definesterms relating to mech

16、anical testing.Terminology E456 andPractice E177 define terms relating to statistics.In the event ofa conflict between terms,Terminology D3878 shall haveprecedence over the other standards.3.2 Definitions of Terms Specific to This Standard:NOTE2If the term represents a physical quantity,its analyticaldimensions are stated immediately following the term(or letter symbol)infundamental dimension form,using the following ASTM standard sym-bology for fundamental dimensions,shown within square bracket

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