ASTM_D_5992_-_96_2011.pdf

Designation:D599296(Reapproved 2011)Standard Guide forDynamic Testing of Vulcanized Rubber and Rubber-LikeMaterials Using Vibratory Methods1This standard is issued under the fixed designation D5992;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 guide covers dynamic testing of vulcanized rubberand rubber-like(both hereinafter termed“rubber”or“elasto-meric”)materials and products,leading from the definitions ofterms used,through the basic mathematics and symbols,to themeasurement of stiffness and damping,and finally through theuse of specimen geometry and flexing method,to the measure-ment of dynamic modulus.1.2 This guide describes a variety of vibratory methods fordetermining dynamic properties,presenting them as options,not as requirements.The methods involve free resonantvibration,and forced resonant and nonresonant vibration.Inthe latter two cases the input is assumed to be sinusoidal.1.3 While the methods are primarily for the measurement ofmodulus,a material property,they may in many cases beapplied to measurements of the properties of full-scale prod-ucts.1.4 The methods described are primarily useful over therange of temperatures from 70C to+200C(100F to+400F)and for frequencies from 0.01 to 100 Hz.Not allinstruments and methods will accommodate the entire ranges.1.5 When employed for the measurement of dynamicmodulus,the methods are intended for materials having com-plex moduli in the range from 100 to 100 000 kPa(15 to15 000 psi)and damping angles from 0 to 90.Not allinstruments and methods will accommodate the entire ranges.1.6 Both translational and rotational methods are described.To simplify generic descriptions,the terminology of translationis used.The subject matter applies equally to the rotationalmode,substituting“torque”and“angular deflection”for“force”and“displacement.”1.7 This guide is divided into sections,some of whichinclude:SectionTerminology and Symbols3Factors Influencing Dynamic Measurement7Test Methods and Specimens8Nonresonant Analysis Methods and Their Influence onResults9Report10Mechanical and Instrumentation Factors Influencing DynamicMeasurementAnnex A1Guide to Further ReadingAppendix X1Double-Shear SpecimensDerivation of Equations andDescriptions of SpecimensAppendix X2Torsion SpecimensDerivation of Equations andDescriptions of SpecimensAppendix X3Compression/Tension SpecimensDerivation of Equationsand Descriptions of SpecimensAppendix X4Free Resonant VibrationEquations for Log Decrement andStiffnessAppendix X5Obtaining Loss Factor and Elastic Stiffness fromTransmissibility CurvesAppendix X61.8 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.9 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.2.Referenced Documents2.1 ASTM Standards:2D945 Test Methods for Rubber Properties in Compression orShear(Mechanical Oscillograph)D1566 Terminology Relating to Rubber2.2 ISO Document:3ISO 2856 ElastomersGeneral Requirements for DynamicTesting1This guide is under the jurisdiction of ASTM Committee D11 on Rubber andis the direct responsibility of Subcommittee D11.10 on Physical Testing.Current edition approved May 1,2011.Published July 2011.Originally approvedin 1996.Last previous edition approved in 2006 as D5992 96(2006)1.DOI:10.1520/D5992-96R11.2For 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.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.3 DIN Document:4DIN 53 513 Determination of viscoelastic properties ofelastomers on exposure to forced vibration at non-resonant frequencies3.Terminology3.1 Definitions:3.1.1 Definitions The following terms are listed in relatedgroups rather than alphabetically(see also TerminologyD1566).3.1.2 delta,n in the measurement of rubber properties,the symbol for the phase angle by which the dynamic forceleads the dynamic deflection;mathematically true only whenthe two dynamic waveforms are sine waves(Synonym lossangle).3.1.3 tandel,tan,nmathematical tangent of the phaseangle delta();pure numeric;often written spaced:tan del;often written using“delta”:tandelta,tan delta(Synonymlossfactor).3.1.4 phase angle,nin general,the angle by which onesi