ASTM_D_2563_-_08_2015.pdf

Designation:D256308(Reapproved 2015)Standard Practice forClassifying Visual Defects in Glass-Reinforced PlasticLaminate Parts1This standard is issued under the fixed designation D2563;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 covers acceptance criteria for visual in-spection of parts made from molded glass-reinforced plasticlaminates.1.2 This practice presents word descriptions of possibledefects to serve as a guide for contracts,drawings,productspecifications,and final inspection.1.3 This practice also categorizes different inspection re-quirements for levels of product quality.1.4 The allowable size and frequency of permitted defectswithin the acceptance level categories of this specification aregeneral and not related to specific service requirements.ALevel IV of allowable defects which defines allowable size,frequency,and permitted repair procedures should be estab-lished for specific service requirements as agreed upon be-tween the purchaser and the supplier.1.5 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.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.NOTE1There is no known ISO equivalent to this standard.2.Acceptance Criteria2.1 The method and frequency of sampling and the allow-able defects may be previously agreed upon between thepurchaser and the seller.2.2 Dimensions and TolerancesParts shall be inspectedfor conformance with dimensions and tolerances specified onthe drawings.Any dimensions falling outside the specifiedlimits shall be cause for rejection.2.3 InsertsAll inserts,nuts,studs,and lugs shall not bedamaged in any way,nor coated with laminate materials insuch a way as to impair function or mechanical fit.Threads inmolded-in inserts shall be clean,smooth,free of nicks,tears,orother damage.There shall be no laminate materials or flash onthe threads.If necessary,threaded inserts may be retapped toclean them or remove flash.Threads containing locking fea-tures or coated for corrosion resistance shall not be retapped.2.4 Molded-In Threads or Cored HolesMolded-in threadsor cored holes shall be free of visible defects such as chips,cracks,shorts,etc.Molded-in threads may be retapped orrepaired unless otherwise specifically noted on the productdrawings.2.5 WorkmanshipWorkmanship shall be in accordancewith good commercial practices as listed in Table 1 forapplicable acceptance levels.2.6 Critical AreaSome portions of a part may be consid-ered more critical than others.A critical area is here defined asan area in which the presence of imperfections is considered tobe most detrimental.The areas of parts that are criticalstructurally,aerodynamically,or electrically shall be uniformand free of defects as listed in Table 1,if so stated on theproduct drawing.Critical areas may be designated on theproduct drawing by one of the following methods:2.6.1 Encircle critical areas,or2.6.2 Cross-hatch areas to designate areas of various levels,or2.6.3 Word description.2.7 Allowable Defects,VisualThe defects in noncriticalareas which by nature,content,or frequency do not affectserviceability of the part are designated as allowable defects.Allowable defects shall be fully described as to type,size,number,extent allowed,and spacing.The appropriate accep-tance level(Table 1)for defects in these areas must bespecified.Where Level IV is used the defects must be fullydescribed on the product drawing.Defects greater than thoselisted in the product specifications,drawings,or contracts forthe part shall be cause for rejection.1This practice is under the jurisdiction ofASTM Committee D20 on Plastics andis the direct responsibility of Subcommittee D20.18 on Reinforced ThermosettingPlastics.Current edition approved Sept.1,2015.Published September 2015.Originallyapproved in 1966.Last previous edition approved in 2008 as D2563-08.DOI:10.1520/D2563-08R15.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 TABLE 1 Allowable DefectsNameDefinitionVisual Acceptance LevelsLevel ILevel IILevel IIIChipa small piece broken off an edge or surfacenonemaximum dimension of break,3.0 mm(18in.)maximum dimension of break,6.5 mm(14in.)Crackan actual separation of the laminate,visible onopposite surfaces,and extending through thethicknessnonenonenoneCrack,surfacecrack existing only on the surface of thelaminatenonemaximum length,