ASTM_C_1360_-_17.pdf

Designation:C136017Standard Practice forConstant-Amplitude,Axial,Tension-Tension Cyclic Fatigueof Continuous Fiber-Reinforced Advanced Ceramics atAmbient Temperatures1This standard is issued under the fixed designation C1360;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.1.Scope1.1 This practice covers the determination of constant-amplitude,axial tension-tension cyclic fatigue behavior andperformance of continuous fiber-reinforced advanced ceramiccomposites(CFCCs)at ambient temperatures.This practicebuilds on experience and existing standards in tensile testingCFCCs at ambient temperatures and addresses various sug-gested test specimen geometries,specimen fabricationmethods,testing modes(force,displacement,or strain control),testing rates and frequencies,allowable bending,and proce-dures for data collection and reporting.This practice does notapply to axial cyclic fatigue tests of components or parts(thatis,machine elements with nonuniform or multiaxial stressstates).1.2 This practice applies primarily to advanced ceramicmatrix composites with continuous fiber reinforcement:uni-directional(1-D),bi-directional(2-D),and tri-directional(3-D)or other multi-directional reinforcements.In addition,thispractice may also be used with glass(amorphous)matrixcomposites with 1-D,2-D,3-D,and other multi-directionalcontinuous fiber reinforcements.This practice does not directlyaddress discontinuous fiber-reinforced,whisker-reinforced orparticulate-reinforced ceramics,although the methods detailedhere may be equally applicable to these composites.1.3 The values stated in SI units are to be regarded as thestandard and are in accordance with IEEE/ASTM SI 10.1.4 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.Refer to Section 7for specific precautions.2.Referenced Documents2.1 ASTM Standards:2C1145 Terminology of Advanced CeramicsC1275 Test Method for Monotonic Tensile Behavior ofContinuous Fiber-Reinforced Advanced Ceramics withSolid Rectangular Cross-Section Test Specimens at Am-bient TemperatureD3479/D3479M Test Method for Tension-Tension Fatigueof Polymer Matrix Composite MaterialsD3878 Terminology for Composite MaterialsE4 Practices for Force Verification of Testing MachinesE6 Terminology Relating to Methods of Mechanical TestingE83 Practice for Verification and Classification of Exten-someter SystemsE337 Test Method for Measuring Humidity with a Psy-chrometer(the Measurement of Wet-and Dry-Bulb Tem-peratures)E467 Practice for Verification of Constant Amplitude Dy-namic Forces in an Axial Fatigue Testing SystemE468 Practice for Presentation of Constant Amplitude Fa-tigue Test Results for Metallic MaterialsE739 Practice for StatisticalAnalysis of Linear or LinearizedStress-Life(S-N)and Strain-Life(-N)Fatigue DataE1012 Practice for Verification of Testing Frame and Speci-men Alignment Under Tensile and Compressive AxialForce ApplicationE1150 Definitions of Terms Relating to Fatigue(Withdrawn1996)3E1823 Terminology Relating to Fatigue and Fracture TestingIEEE/ASTM SI 10 Standard for Use of the InternationalSystem of Units(SI)(The Modern Metric System)3.Terminology3.1 Definitions:1This practice is under the jurisdiction of ASTM Committee C28 on AdvancedCeramics and is the direct responsibility of Subcommittee C28.07 on CeramicMatrix Composites.Current edition approved Feb.1,2017.Published February 2017.Originallyapproved in 1996.Last previous edition approved in 2015 as C1360 10(2015).DOI:10.1520/C1360-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,or3.1.1 Definitions of terms relating to advanced ceramics,fiber-reinforced composites,tensile testing,and cyclic fatigueas they appear in Terminology C1145,Terminology D3878,Terminology E6,and Terminology E1823,respectively,applyto the terms used in this practice.Selected terms with defini-tions not specific to this practice follow in 3.2 with theappropriate source given in parenthesis.Terms specific to thispractice are defined in 3.3.3.2 Definitions of Terms Specific to This Standard:3.2.1 advanced ceramic,nA highly engineered,high per-formance predominately non-metallic,inorganic,ceramic ma-terial having specific functional attributes.(See TerminologyC1145.)3.2.2 axial strain LL1,nthe average longitudinal strainsmeasured at the surface on opposite sides of the longitudinalaxis of symmetry of the test specimen by two strain-sensingdevices located at the mid length of the reduced section.(SeePractice E1012.)3.2.3 bending strain LL1,nthe difference between thestrain at the surface and the a