ASTM_F_355_-_10a.pdf

Designation:F35510aAn American National StandardStandard Test Method forImpact Attenuation of Playing Surface Systems andMaterials1This standard is issued under the fixed designation F355;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method measures the impact attenuation ofplaying surface systems and materials,specifically the peakimpact acceleration(“impact shock”)produced under pre-scribed impact conditions.1.2 This test method is applicable to natural and artificialplayingsurfacesystemsintendedtoprovideimpactattenuation,including natural and artificial turf sports fieldsand playground surfaces.1.3 This test method is applicable to impact attenuatingmats and padding used in sports facilities,including stadiumwall padding,gymnastic mats and wrestling mats.1.4 This test method may be used to measure the impactattenuation of materials and components used as protectivepadding on trampoline frames,goal posts,etc.,provided thematerial or component can be tested separately from theequipment to which it is attached.1.5 Without modifications,this test method shall not be usedto test materials and components that are attached to structuresor equipment or finished products,unless the impact attenua-tion of the whole system is of interest.1.6 While it is widely believed that appropriate impactattenuation can reduce the risk of impact-related injuries,therelationships between the results of this test method andspecific injury risk and outcomes have not been determined.1.7 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.8 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:2D1596 Test Method for Dynamic Shock Cushioning Char-acteristics of Packaging MaterialE105 Practice for Probability Sampling of MaterialsE122 Practice for Calculating Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or ProcessE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodF1292 Specification for Impact Attenuation of SurfacingMaterials Within the Use Zone of Playground EquipmentF2650 Terminology Relating to Impact Testing of SportsSurfaces and Equipment2.2 SAE Standard:SAE J211/1 Instrumentation for Impact Tests-Part 1-Electronic Instrumentation(rev.July 2007)33.Terminology3.1 Definitions:3.1.1 Definitions of terms related to impact testing of sportssurfaces equipment can be found in Terminology F2650.4.Summary of Test Method4.1 A test specimen is impacted at a specified velocity witha missile of given mass and geometry.An accelerometermounted in the missile is used to record the acceleration-timehistory of the impact and the peak acceleration is used as ameasure of impact severity.Optionally,the displacement his-tory of the impact may also be recorded.4.2 This test method defines three missiles for use in playingsurface impact tests:4.2.1 Missiles A and D are both cylindrical,with specifiedmass and geometry and a circular,flat,metal impactingsurface.These missiles are used with a guidance mechanism.1This test method is under the jurisdiction of ASTM Committee F08 on SportsEquipment,Playing Surfaces,and Facilitiesand is the direct responsibility ofSubcommittee F08.52 on Miscellaneous Playing Surfaces.Current edition approved July 1,2010.Published August 2010.Originallyapproved in 1972.Last previous edition approved in 2010 as F355 10.DOI:10.1520/F0355-10A.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 SAE International(SAE),400 Commonwealth Dr.,Warrendale,PA 15096-0001,http:/www.sae.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.2.2 Missile E has a hemispherical impacting surface ofspecified mass and geometry and may be used with a guidancesystem or,if equipped with a triaxial accelerometer,withoutguidance(“free-fall”).4.2.3 The specific masses and geometries of the missiles aredetailed in 6.2.5.Significance and Use5.1 The results of this method quantify the impact attenua-tion of playing surface and system specimens under the specifictest conditions.5.2 The test method measures the outcome of impactsperformed under specific conditions.It does not quantify theintrinsic material properties of the test