ASTM_D_6600_-_00_2013.pdf

Designation:D660000(Reapproved 2013)Standard Practice forEvaluating Test Sensitivity for Rubber Test Methods1This standard is issued under the fixed designation D6600;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 testing to evaluate chemicalconstituents,chemical and physical properties of compoundingmaterials,and compounded and cured rubbers,which mayfrequently be conducted by one or more test methods.Whenmore than one test method is available,two questions arise:Which test method has the better(or best)response to ordiscrimination for the underlying fundamental property beingevaluated?and Which test method has the least error?Thesetwo characteristics collectively determine one type of technicalmerit of test methods that may be designated as test sensitivity.1.2 Although a comprehensive and detailed treatment,asgiven by this practice,is required for a full appreciation of testsensitivity,a simplified conceptual definition may be givenhere.Test sensitivity is the ratio of discrimination power for thefundamental property evaluated to the measurement error oruncertainty,expressed as a standard deviation.The greater thediscriminating power and the lower the test error,the better isthe test sensitivity.Borrowing from the terminology inelectronics,this ratio has frequently been called the signal-to-noise ratio;the signal corresponding to the discriminationpower and the noise corresponding to the test measurementerror.Therefore,this practice describes how test sensitivity,generically defined as the signal-to-noise ratio,may be evalu-ated for test methods used in the rubber manufacturingindustry,which measure typical physical and chemicalproperties,with exceptions as noted in 1.3.1.3 This practice does not address the topic of sensitivity forthreshold limits or minimum detection limits(MDL)in suchapplications as(1)the effect of intentional variations ofcompounding materials on measured compound properties or(2)the evaluation of low or trace constituent levels.Minimumdetection limits are the subject of separate standards.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.1.5 The content of this practice is as follows:SectionScope1Referenced Documents2Terminology3Summary of Practice4Significance and Use5Measurement Process6Development of Test Sensitivity Concepts(Absolute and Relative Test Sensitivity,Limited and ExtendedRange Test Sensitivity,Uniform and Nonuniform Test Sensitivity)7Steps in Conducting a Test Sensitivity Evaluation Program8Report for Test Sensitivity Evaluation9Keywords10Annex A1Background on:Use of Linear Regression Analysis andPrecision of Test Sensitivity EvaluationAppendix X1Two Examples of Relative Test Sensitivity Evaluation:Relative Test Sensitivity:Limited RangeThree ProcessabilityTestsRelative Test Sensitivity:Extended RangeCompliance versusModulusAppendix X2Background on:Transformation of Scale andDerivation of Absolute Sensitivity for a Simple Analytical Test2.Referenced Documents2.1 ASTM Standards:2D4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustries3.Terminology3.1 A number of specialized terms or definitions are re-quired for this practice.They are defined in a systematic orsequential order from simple terms to complex terms;thesimple terms may be used in the definition of the more complexterms.This approach generates the most succinct and unam-biguous definitions.Therefore,the definitions do not appear inthe usual alphabetical sequence.3.2 Definitions:3.2.1 calibration material,CM,na material(or otherobject)selected to serve as a standard or benchmark referencematerial,with a fully documented FP reference value for a test1This practice is under the jurisdiction ofASTM Committee D11 on Rubber andis the direct responsibility of Subcommittee D11.16 on Application of StatisticalMethods.Current edition approved Nov.1,2013.Published January 2014.Originallyapproved in 2000.Last previous edition approved in 2009 as D6600 00(2009).DOI:10.1520/D6600-00R13.2For 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 method;the calibration material,along with several othersimilar materials with documented or FP reference values,maybe used to calibrate a