2023年全國(guó)碩士研究生考試考研英語(yǔ)一試題真題（含答案詳解+作文范文）_第1頁(yè)
已閱讀1頁(yè)，還剩7頁(yè)未讀， 繼續(xù)免費(fèi)閱讀

下載本文檔

版權(quán)說(shuō)明：本文檔由用戶(hù)提供并上傳，收益歸屬內(nèi)容提供方，若內(nèi)容存在侵權(quán)，請(qǐng)進(jìn)行舉報(bào)或認(rèn)領(lǐng)

文檔簡(jiǎn)介

1、Designation:D7310?11StardGuidefDefectDetectionRatingofPlasticFilmsUsingOpticalSenss1ThisstardisissuedunderthefixeddesignationD7310thenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptioninthecaseofrevi

2、siontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1Thisguideisintendedtoprovidesuggestedapproachescriteriaftheob

3、servationreptingofdefectsinvarioustypesofplasticfilmbymeansofanopticalscanningsystem.1.2Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishap

4、propriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.NOTE1—ThereisnoknownISOequivalenttothisstard.2.ReferencedDocuments2.1ASTMStards:2D883TerminologyRelatingtoPlastics3.Terminology3.1Defin

5、itionsofTermsSpecifictoThisStard:3.1.1defect—fthepurposeofthisguideanyentityinthefilmthatislargeenoughtobedetectedbyanopticalsensiseitherpolymericinnaturecausedbydegradationexternalcontaminationundispersedadditivespigmen

6、tssimilarsources.4.SignificanceUse4.1Defectsinfilmarenotacceptabletotheenduserasthereisareductioninthefitnessfuseinmanyapplications.Thisdocumentisintendedtobeaguidetoassistusersintheinspectionobservationofdefects.4.2This

7、guideisapplicableinalabatyenvironmentasaqualitycontrolasaresearchtool.Itisalsoappropriatefuseinanycommercialprocessusedtoproducefilmincludingcalenderingsolventcasting.4.3Thisguideisalsosuitablefuseasanevaluationscreening

8、toolfmaterialsintendedtobeusedinotherprocesseswheredefectsofthisnaturearealsocriticalsuchasfiberspinningnonwovens.4.4Theindividualusermustestablishtherelationshipbetweenthecriteriaacceptanceffitnessfusetheobserveddefects

9、asitvariesbypolymerapplication.Thisisattainedbythecollectionofdataoveratimeperiodtoestablishacceptablecontrollimits.5.Apparatus5.1Extruder—Adevicefmeltingpolymerthatproducesaflatblown(tubular)filmwithsizesvaryingfromlabs

10、caletoproductionscale.NOTE2—Althoughthistechniqueisutilizedfmanydifferentprocessesusedfproducingfilmstheextrusionsystemsdescribedinthefollowingsectionrepresentthemeprevalentprocessused.Thisisnottoimplythattheguidanceprov

11、idedfutilizingthistypeofinstrumentationcannotbeappliedtootherprocessesotherapplications.5.1.1FlatFilmExtrusion—Anextrusionsystemthatproducesaflatfilmthatisquenchedimmediatelyafterextrusionbymeansofonemecoolingdevicessuch

12、asanairknifechillrollwaterbath.5.1.2Blowntubularextrusion–Anextrusionsystemthatproducesatubular“bubble”offilmfromacirculardieusuallyequippedwithanairringtocoolthepolymer.5.2ScreenPack—Althoughcommonlyusedincommercialsemi

13、commercialenvironmentsscreenpacksarenotgenerallyusedinlabatyunitsintendedfresearchqualityfunctions.5.3DefectDetectionSystem—Anopticalscanningsystemwithalightsourceananalogdigitalcameraanimageprocess.Theopticalacteristics

14、ofthecameraarecriticalfdetectingsmall(30m)defectsitisimptantthattheinstrumentmanufacturerbeinfmedofthedetectionneedswhenchoosingasystem.NOTE3—Othertypesofdetectionsystemsthantheonesdescribedinthisguideareavailablebutareo

15、utsidethescopeoftheguidearenotdefined.1ThisguideisunderthejurisdictionofASTMCommitteeD20onPlasticsisthedirectresponsibilityofSubcommitteeD20.19onFilmSheetingMoldedProducts.CurrenteditionapprovedDec.12011.PublishedJanuary

16、2012.iginallyapprovedin2007.Lastpreviouseditionapprovedin2007asD731007.DOI:10.1520D731011.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothest

17、ard’sDocumentSummarypageontheASTMwebsite.Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates1essentiallyservestotrackdeviationsfromtheacceptablelevels.Inthiscasetheacceptablelevel

18、sshallbedeterminedbytheacceptedfitnessfusesetbytheapplicationbyagreementbetweensupplieruser.NOTE7—Itisalsopossibletomonitcommercialqualitybytakingasampleoffilmevaluatingitusinganofflinesystem.Howeverthiswillnotprovidecon

19、tinuousmonitingnwillitnecessarilyberepresentativeoftheentirecommercialproductionquantity.6.2EvaluationofDefectsNOTE8—GeneralbestpracticeguidelinespossiblesourcesoftesterrarefoundinAppendixX1.6.2.1Flabatyevaluationsproduc

20、easufficientquantityoffilmtoensurethedefectfrequencyhasstabilized.NOTE9—Itiscriticalthatthesurroundingareanotbedisturbedduringtheevaluationasdustotherfeignparticulatematterarepronetocausingerroneousmeasurements.Coverthee

21、xtruderhopperduringtheevaluationtopreventtheinclusionofanyfeignmaterials.6.2.2Monitthefilmwiththeopticalscanningsystem.6.2.3Observations6.2.3.1Recdtheresultsofthemeasurementofdefectsasdetectedbythespecificinspectionsyste

22、m.6.2.3.2Categizecountthedefectsaccdingtosizeclassesotherspecificationsasdefinedbyinternalstardsagreementbetweensupplieruser.(a)Typicalunitsfreptingincludedefectspersquaremeter(squarefoot)defectareainpartspermillion(PPMd

23、efectarea=totaldefectareatotalareameasured)anyothermethodasdefinedbyinternalstardsagreementbetweensupplieruser.NOTE10—ExamplesofdatapresentationffilmdefectdetectionmonitingareshowninAppendixX3.Theexamplesofthereptsarefro

24、mthesameopticalscannerareprovidedasameansofdemonstratingthetypeofinfmationavailable.7.Rept7.1Completesampleidentification7.2Dateofsampletesting7.3MethodofEvaluation7.3.1EquipmentType(LabProductionFlatBlownetc.)7.3.2Scann

25、erMode(TransmissionReflection(anglesofcameralightsourcetothefilmfreflection))7.4Filmthickness7.5Areaoffilminspected7.6Defectobservationsize7.6.1MethodofObservations(measurement)basedoninternalrequirementstheacceptedfitne

溫馨提示

  • 1. 本站所有資源如無(wú)特殊說(shuō)明，都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請(qǐng)下載最新的WinRAR軟件解壓。
  • 2. 本站的文檔不包含任何第三方提供的附件圖紙等，如果需要附件，請(qǐng)聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶(hù)所有。
  • 3. 本站RAR壓縮包中若帶圖紙，網(wǎng)頁(yè)內(nèi)容里面會(huì)有圖紙預(yù)覽，若沒(méi)有圖紙預(yù)覽就沒(méi)有圖紙。
  • 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
  • 5. 眾賞文庫(kù)僅提供信息存儲(chǔ)空間，僅對(duì)用戶(hù)上傳內(nèi)容的表現(xiàn)方式做保護(hù)處理，對(duì)用戶(hù)上傳分享的文檔內(nèi)容本身不做任何修改或編輯，并不能對(duì)任何下載內(nèi)容負(fù)責(zé)。
  • 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容，請(qǐng)與我們聯(lián)系，我們立即糾正。
  • 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時(shí)也不承擔(dān)用戶(hù)因使用這些下載資源對(duì)自己和他人造成任何形式的傷害或損失。

評(píng)論

0/150

提交評(píng)論