ASTM E1823-2011 Standard Terminology Relating to Fatigue and Fracture Testing《疲劳和断裂测试相关的标准术语》.pdf
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1、Designation: E1823 11Standard TerminologyRelating to Fatigue and Fracture Testing1This standard is issued under the fixed designation E1823; 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 par
2、entheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This terminology contains definitions, definitions ofterms specific to certain standards, symbols, and abbreviationsapproved for use in standards on
3、 fatigue and fracture testing.The definitions are preceded by two lists. The first is analphabetical listing of symbols used. (Greek symbols are listedin accordance with their spelling in English.) The second is analphabetical listing of relevant abbreviations.1.2 This terminology includes Annex A1
4、on Units andAnnex A2 on Designation Codes for Specimen Configuration,Applied Loading, and Crack or Notch Orientation.2. Referenced Documents2.1 ASTM Standards:2E6 Terminology Relating to Methods of MechanicalTestingE23 Test Methods for Notched Bar Impact Testing ofMetallic MaterialsE28 Test Methods
5、for Softening Point of Resins Derivedfrom Naval Stores by Ring-and-Ball ApparatusE208 Test Method for Conducting Drop-Weight Test toDetermine Nil-Ductility Transition Temperature of FerriticSteelsE338 Test Method of Sharp-Notch Tension Testing of High-Strength Sheet Materials3E399 Test Method for Li
6、near-Elastic Plane-Strain FractureToughness KIcof Metallic MaterialsE436 Test Method for Drop-Weight Tear Tests of FerriticSteelsE467 Practice for Verification of Constant Amplitude Dy-namic Forces in an Axial Fatigue Testing SystemE468 Practice for Presentation of Constant Amplitude Fa-tigue Test R
7、esults for Metallic MaterialsE561 Test Method for K-R Curve DeterminationE602 Test Method for Sharp-Notch Tension Testing withCylindrical Specimens3E604 Test Method for Dynamic Tear Testing of MetallicMaterialsE606 Practice for Strain-Controlled Fatigue TestingE647 Test Method for Measurement of Fat
8、igue CrackGrowth RatesE739 Practice for Statistical Analysis of Linear or Linear-ized Stress-Life (S-N) and Strain-Life (e-N) Fatigue DataE740 Practice for Fracture Testing with Surface-Crack Ten-sion SpecimensE813 Test Method for JIc,AMeasure of FractureToughnessE992 Practice for Determination of F
9、racture Toughness ofSteels Using Equivalent Energy MethodologyE1049 Practices for Cycle Counting in Fatigue AnalysisE1152 Test Method for Determining-J-R-CurvesE1221 Test Method for Determining Plane-Strain Crack-Arrest Fracture Toughness, KIa, of Ferritic SteelsE1290 Test Method for Crack-Tip Openi
10、ng Displacement(CTOD) Fracture Toughness MeasurementE1304 Test Method for Plane-Strain (Chevron-Notch) Frac-ture Toughness of Metallic MaterialsE1457 Test Method for Measurement of Creep CrackGrowth Times in MetalsE1681 Test Method for Determining Threshold Stress In-tensity Factor for Environment-A
11、ssisted Cracking of Me-tallic MaterialsE1737 Test Method for J-Integral Characterization of Frac-ture Toughness (Discontinued 1998)3E1820 Test Method for Measurement of Fracture Tough-nessE1921 Test Method for Determination of Reference Tem-perature, To, for Ferritic Steels in the Transition RangeE1
12、942 Guide for Evaluating Data Acquisition SystemsUsed in Cyclic Fatigue and Fracture Mechanics TestingE2207 Practice for Strain-Controlled Axial-Torsional Fa-tigue Testing with Thin-Walled Tubular SpecimensE2208 Guide for Evaluating Non-Contacting Optical StrainMeasurement Systems1This terminology i
13、s under the jurisdiction ofASTM Committee E08 on Fatigueand Fracture and is the direct responsibility of Subcommittee E08.02 on Standardsand Terminology.Current edition approved June 1, 2011. Published December 2011. Originallyapproved in 1996. Last previous edition approved in 2010 as E1823 10a. DO
14、I:10.1520/E1823-11.2For 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.3Withdrawn. The last approved version of t
15、his historical standard is referencedon www.astm.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.E2298 Test Method for Instrumented Impact Testing ofMetallic MaterialsE2443 Guide for Verifying Computer-Generated Test Re-sults Thr
16、ough The Use Of Standard Data SetsE2472 Test Method for Determination of Resistance toStable Crack Extension under Low-Constraint ConditionsE2714 Test Method for Creep-Fatigue TestingE2760 Test Method for Creep-Fatigue Crack Growth Test-ingG15 Terminology Relating to Corrosion and CorrosionTesting33
17、. Terminology3.1 Alphabetical Listing of Principal Symbols Used in ThisTerminology:Symbol Terma crack depth, crack length, crack size, estimated cracksizeaeeffective crack sizeannotch lengthaooriginal crack sizeapphysical crack sizea/W normalized crack sizeA force ratio (Pa/Pm)ANnet-section areab re
18、maining ligamentbooriginal uncracked ligamentB specimen thicknessBeeffective thicknessBNnet thickness2c surface-crack lengthC normalized K-gradientD cycle ratio (n/Nf)C*(t) C*(t) Integralda/dN fatigue-crack-growth rated crack-tip opening displacement (CTOD)dd specimen gage lengthDa crack extension,
19、estimated crack extensionDK stress-intensity-factor rangeDKthfatigue-crack-growth thresholdDP force rangeastrain amplitudeininelastic strainmmean forceG crack-extension forceGRcrack-extension resistanceH* specimen center of pin hole distanceG the path of the J-integralJJ-integralJIcplane-strain frac
20、ture toughnessJRcrack-extension resistancekffatigue notch factorkttheoretical stress concentration factor (sometimes ab-breviated stress concentration factor)K, K1, K2, K3,KI, KII, KIIIstress-intensity factor (see mode)Kacrack-arrest fracture toughnessKcplane-stress fracture toughnessKEACstress inte
21、nsity factor threshold for environment-assisted crackingKIaplane-strain crack-arrest fracture toughnessKIEACstress intensity factor threshold for plane strainenvironment-assisted crackingKIcplane-strain fracture toughnessKIvM, KIv, KIvjplane-strain (chevron-notch) fracture toughnessKmaxmaximum stres
22、s-intensity factorKminminimum stress-intensity factorKostress-intensity factor at crack initiationKRcrack-extension resistancen cycles enduredNffatigue lifeP forceSymbol TermPaforce amplitudePmmean forcePMprecrack forcePmaxmaximum forcePminminimum forceq fatigue notch sensitivityr effective unloadin
23、g slope ratiorccritical slope ratioryplastic-zone adjustmentR force ratio (Pmin/Pmax)s sample standard deviations2sample varianceS specimen spanSaforce amplitudeSffatigue limitSmmean forceSNfatigue strength at N cyclessccrack strengthsNnominal (net-section) stresssrresidual strengthsssharp-notch str
24、engthsTStensile strengthsx, sy, sznormal stresses (refer to )sYeffective yield strengthsYSyield strengthT specimen temperaturetTtransition timetttotal cycle periodtxy,tyz, tzxshear stresses (refer to Fig. 1)u displacement in x directionv displacement in y direction2vmcrack-mouth opening displacement
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