ASTM_D_5448_-_D_5448M_-_11.pdf

Designation:D5448/D5448M11Standard Test Method forInplane Shear Properties of Hoop Wound Polymer MatrixComposite Cylinders1This standard is issued under the fixed designation D5448/D5448M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the 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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method determines the inplane shear propertiesof wound polymer matrix composites reinforced by high-modulus continuous fibers.It describes testing of hoop wound(90)cylinders in torsion for determination of inplane shearproperties.1.2 The technical content of this standard has been stablesince 1993 without significant objection from its stakeholders.As there is limited technical support for the maintenance of thisstandard,changes since that date have been limited to itemsrequired to retain consistency with other ASTM D30 Commit-tee standards,including editorial changes and incorporation ofupdated guidance on specimen preconditioning and environ-mental testing.The standard,therefore,should not be consid-ered to include any significant changes in approach andpractice since 1993.Future maintenance of the standard willonly be in response to specific requests and performed only astechnical support allows.1.3 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-conformancewith the standard.1.3.1 Within the text the inch-pound units are shown inbrackets.1.4 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.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 Test Methods for Constituent Content of CompositeMaterialsD3878 Terminology for Composite MaterialsD5229/D5229M Test Method for MoistureAbsorption Prop-erties and Equilibrium Conditioning of Polymer MatrixComposite MaterialsD5449/D5449M Test Method for Transverse CompressiveProperties of Hoop Wound Polymer Matrix CompositeCylindersD5450/D5450M Test Method for Transverse Tensile Prop-erties of Hoop Wound Polymer Matrix Composite Cylin-dersE6 Terminology Relating 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 MethodsE251 Test Methods for Performance Characteristics of Me-tallic Bonded Resistance Strain GagesE456 Terminology Relating to Quality and StatisticsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE1237 Guide for Installing Bonded Resistance Strain Gages1This test method is under the jurisdiction of ASTM Committee D30 onComposite Materials and is the direct responsibility of Subcommittee D30.04 onLamina and Laminate Test Methods.Current edition approved Nov.15,2011.Published December 2011.Originallyapproved in 1993.Last previous edition approved in 2006 as D5448/D5448M 93(2006).DOI:10.1520/D5448_D5448M-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,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 mechanical testing.Terminology E456 andPractice E177 define terms relating to statistics.In the event ofa conflict between terms,Terminology D3878 shall haveprecedence over other standards.NOTE1If 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 brackets:Mfor mass,L for length,T for time,for thermodynamic temperature,and nd for non-dimensional quantities.Use of these symbols