ASTM_E_2581_-_14.pdf

Designation:E258114Standard Practice forShearography of Polymer Matrix Composites and SandwichCore Materials in Aerospace Applications1This standard is issued under the fixed designation E2581;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript 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 practice describes procedures for shearography ofpolymer matrix composites and sandwich core materials madeentirely or in part from fiber-reinforced polymer matrix com-posites.The composite materials under consideration typicallycontain continuous high modulus(greater than 20 GPa(3106psi)fibers,but may also contain discontinuous fiber,fabric,orparticulate reinforcement.1.2 This practice describes established shearography proce-dures that are currently used by industry and federal agenciesthat have demonstrated utility in quality assurance of polymermatrix composites and sandwich core materials during productprocess design and optimization,manufacturing processcontrol,after manufacture inspection,and in service inspec-tion.1.3 This practice has utility for testing of polymer matrixcomposites and sandwich core materials containing but notlimited to bismaleimide,epoxy,phenolic,poly(amideimide),polybenzimidazole,polyester(thermosettingandthermoplastic),poly(ether ether ketone),poly(ether imide),polyimide(thermosetting and thermoplastic),poly(phenylenesulfide),or polysulfone matrices;and alumina,aramid,boron,carbon,glass,quartz,or silicon carbide fibers.Typical as-fabricated geometries include uniaxial,cross-ply and angle-plylaminates;as well as honeycomb and foam core sandwichmaterials and structures.1.4 This practice does not specify accept-reject criteria andis not intended to be used as a means for approving polymermatrix composites or sandwich core materials for service.1.5 To ensure proper use of the referenced standards,thereare recognized nondestructive testing(NDT)specialists thatare certified according to industry and company NDT specifi-cations.It is recommended that an NDT specialist be a part ofany composite component design,quality assurance,in-servicemaintenance,or damage examination activity.1.6 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:2C274 Terminology of Structural Sandwich ConstructionsD3878 Terminology for Composite MaterialsD5687/D5687M Guide for Preparation of Flat CompositePanels with Processing Guidelines for Specimen Prepara-tionE543 Specification for Agencies Performing NondestructiveTestingE1309 GuideforIdentificationofFiber-ReinforcedPolymer-Matrix Composite Materials in DatabasesE1316 Terminology for Nondestructive ExaminationsE1434 Guide for Recording Mechanical Test Data of Fiber-Reinforced Composite Materials in DatabasesE1471 Guide for Identification of Fibers,Fillers,and CoreMaterials in Computerized Material Property DatabasesE2533 Guide for Nondestructive Testing of Polymer MatrixComposites Used in Aerospace ApplicationsE2982 Guide for Nondestructive Testing of Thin-WalledMetallic Liners in Filament-Wound Pressure Vessels Usedin Aerospace ApplicationsF1364 Practice for Use of a Calibration Device to Demon-strate the Inspection Capability of an InterferometricLaser Imaging Nondestructive Tire Inspection System2.2 ASNT Standards:3SNT-TC-1A Recommended Practice for Personnel Qualifi-cation and Certification in Nondestructive Testing1This practice is under the jurisdiction of ASTM Committee E07 on Nonde-structive Testing and is the direct responsibility of Subcommittee E07.10 onSpecialized NDT Methods.Current edition approved Oct.1,2014.Published December 2014.Originallyapproved in 2007.Last previous edition approved as E2581-07.DOI:10.1520/E2581-14.2For 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.3Available fromAmerican Society for Nondestructive Testing(ASNT),P.O.Box28518,1711 Arlingate Ln.,Columbus,OH 43228-0518,http:/www.asnt.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 ANSI/ASNT CP-189 Standard for Qualification and Certifi-cation of Nondestructive Testing Personnel2.3 AIA Document:4NAS-410 Certification and Qualification of NondestructiveTest Personnel2.4 BSI Document:5EN 60825-1 Safety of Laser Products-Part 1:EquipmentClassification,Requirements,and Users Guide2.5 LIA Documen