ASTM_D_5265_-_09.pdf

Designation:D526509Standard Test Method forBridge Impact Testing1This standard is issued under the fixed designation D5265;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 is intended to determine the capabilityof a long package with a narrow cross-section to resist impactnear its center when the package is supported only at its ends.This test method allows the user to select from two test options:Option A employs the use of a free-fall drop tester(see ExhibitB),and Option B employs the use of simulated mechanicalimpact testing equipment(S.M.I.T.E.;see Exhibit A).The twooptional procedures are designed to impart the same amount ofkinetic energy at impact;therefore,each procedure yields equaldamage-producing potential.1.2 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety problems,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Documents2.1 ASTM Standards:2D644 Test Method for Moisture Content of Paper andPaperboard by Oven Drying(Withdrawn 2010)3D685 Practice for Conditioning Paper and Paper Productsfor TestingD996 Terminology of Packaging and Distribution Environ-mentsD4332 Practice for Conditioning Containers,Packages,orPackaging Components for TestingE122 Practice for Calculating Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or Process3.Terminology3.1 DefinitionsThe terms and definitions used in this testmethod may be found in Terminology D996.3.2 Definitions of Terms Specific to This Standard:3.2.1 elongated packagea package that is long in propor-tion to width and thickness,with lengths greater or equal to 36in.(914 mm)and each of the other two dimensions 20%orless of the longest dimension.4.Significance and Use4.1 Materials shipped in elongated packages are liable todamage as a result of impact near their midpoint when only theends are supported.This type of damage can occur during theshipment of packaging of mixed dimensions.It is particularlyprevalent during conveyer line transport and sortation.This testmethod provides a means of determining resistance to suchdamage.5.Apparatus5.1 Option AFree-Fall Drop Tester,conforming to theconditions specified in 10.2.1(see Fig.1).5.1.1 Impactor,composed of a hardwood,with a mass of 96 0.4 lb(4.1 6 0.2 kgw)and dimensions of 12 12 12 in.(300 300 300 mm).The impactor shall have at least onebottom edge covered by angle iron.The box shall be filled withthe specified weight and void fill to keep the weight in place.5.1.2 Support Blocks,made from hardwood,nominal 6 6in.(150 150 mm),long enough to support the full width ofthe largest package to be tested.5.2 Option BCommercial S.M.I.T.E.Tester,using aguided impactor and velocity meter to calculate the theoreticalfree-fall drop of the missile(see Fig.2).5.2.1 S.M.I.T.E.Tester Impactor(missile),fabricated in aV-shape cross-section from a steel flat plate,with a mass of 506 0.4 lb(22.68 6 0.2 kgw)and length of approximately 30 in.(760 mm).The long edges of the missile shall be rounded to aradius of 0.25 6 0.0625 in.(6 6 2 mm).NOTE1The standard S.M.I.T.E.tester is equipped with a variety ofinterchangeable missiles,providing impact options ranging from flat drop,1This test method is under the jurisdiction of ASTM Committee D10 onPackaging and is the direct responsibility of Subcommittee D10.21 on ShippingContainers and Systems-Application of Performance Test Methods.Current edition approved Nov.1,2009.Published December 2009.Originallyapproved in 1992.Last previous edition approved in 2009 as D5265 03(2009).DOI:10.1520/D5265-09.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 angle edge drop,half round,half ball,and corner.The total missileassembly,regardless of which face is used,will weigh 50 lb(22.68 kg).Knowing this,the mass of a S.M.I.T.E.tester is always 50 lb(22.68 kg).5.2.2 Support Blocks,made from hardwood,nominal 6 6in.(150 150 mm),long enough to support the full width ofthe largest package to be tested.6.Sampling6.1 The test specimens and num