ASTM_C_1273_-_15.pdf

Designation:C127315Standard Test Method forTensile Strength of Monolithic Advanced Ceramics atAmbient Temperatures1This standard is issued under the fixed designation C1273;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 test method covers the determination of tensilestrength under uniaxial loading of monolithic advanced ceram-ics at ambient temperatures.This test method addresses,but isnot restricted to,various suggested test specimen geometries aslisted in the appendix.In addition,test specimen fabricationmethods,testing modes(force,displacement,or strain control),testing rates(force rate,stress rate,displacement rate,or strainrate),allowable bending,and data collection and reportingprocedures are addressed.Note that tensile strength as used inthis test method refers to the tensile strength obtained underuniaxial loading.1.2 This test method applies primarily to advanced ceramicsthat macroscopically exhibit isotropic,homogeneous,continu-ous behavior.While this test method applies primarily tomonolithic advanced ceramics,certain whisker-or particle-reinforced composite ceramics as well as certain discontinuousfiber-reinforced composite ceramics may also meet thesemacroscopic behavior assumptions.Generally,continuous fiberceramic composites(CFCCs)do not macroscopically exhibitisotropic,homogeneous,continuous behavior and applicationof this practice to these materials is not recommended.1.3 Values expressed in this test method are in accordancewith the International System of Units(SI)and SI10-02IEEE/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.Specific precau-tionary statements are given in Section 7.2.Referenced Documents2.1 ASTM Standards:2C1145 Terminology of Advanced CeramicsC1161 Test Method for Flexural Strength of AdvancedCeramics at Ambient TemperatureC1239 Practice for Reporting Uniaxial Strength Data andEstimating Weibull Distribution Parameters for AdvancedCeramicsC1322 Practice for Fractography and Characterization ofFracture Origins in Advanced CeramicsD3379 Test Method for Tensile Strength and Youngs Modu-lus for High-Modulus Single-Filament 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)E1012 Practice for Verification of Testing Frame and Speci-men Alignment Under Tensile and Compressive AxialForce ApplicationSI10-02 IEEE/ASTM SI 10 American National Standard forUse of the International System of Units(SI):The ModernMetric System3.Terminology3.1 Definitions:3.1.1 The definitions of terms relating to tensile testingappearing in Terminology E6 apply to the terms used in thistest method on tensile testing.The definitions of terms relatingto advanced ceramics testing appearing in Terminology C1145apply to the terms used in this test method.Pertinent definitionsas listed in Practice C1239,Practice E1012,TerminologyC1145,and Terminology E6 are shown in the following with1This test method is under the jurisdiction of ASTM Committee C28 onAdvanced Ceramics and is the direct responsibility of Subcommittee C28.01 onMechanical Properties and Performance.Current edition approved July 1,2015.Published September 2015.Originallyapproved in 1994.Last previous edition approved in 2010 as C1273 05(2010).DOI:10.1520/C1273-15.2For 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the appropriate source given in parentheses.Additional termsused in conjunction with this test method are defined in thefollowing:3.1.2 advanced ceramica highly engineered,high perfor-mance predominately nonmetallic,inorganic,ceramic materialhaving specific functional attributes.C11453.1.3 axial strainthe average of longitudinal strains mea-sured at the surface on opposite sides of the longitudinal axisof symmetry of the specimen by two strain-sensing deviceslocated at the mid length of the reduced section.E10123.1.4 bending strainthe difference between the strain atthe surface and the axial strain.In general,the bending strainvaries from point to point around and along the reduced sectionof the specim