ASTM F1976-2006 Standard Test Method for Impact Attenuation Properties of Athletic Shoes Using an Impact Test《用冲击试验测试运动鞋冲击衰减性能的标准试验方法》.pdf
《ASTM F1976-2006 Standard Test Method for Impact Attenuation Properties of Athletic Shoes Using an Impact Test《用冲击试验测试运动鞋冲击衰减性能的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM F1976-2006 Standard Test Method for Impact Attenuation Properties of Athletic Shoes Using an Impact Test《用冲击试验测试运动鞋冲击衰减性能的标准试验方法》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: F 1976 06An American National StandardStandard Test Method forImpact Attenuation Properties of Athletic Shoes Using anImpact Test1This standard is issued under the fixed designation F 1976; the number immediately following the designation indicates the year oforiginal adoption or, in th
2、e case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers procedures for the measurementof the impact response properti
3、es of athletic shoes usingProcedure A of Test Method F 1614.1.2 This test method is limited to tests using a falling weightimpact machine, as defined by Procedure A of Test MethodF 1614.1.3 This test method is intended for use on the heel and orforefoot regions of whole, intact athletic shoe cushion
4、ingsystems.An athletic shoe cushioning system is defined as all ofthe layers of material between the wearers foot and the groundsurface that are normally considered a part of the shoe. Thismay include any of the following components: outsole or otherabrasion resistant layer, a midsole or other compl
5、iant cushion-ing layer, an insole, insole board, or other material layeroverlying the midsole, parts of the upper and heel counterreinforcement which extend beneath the foot, and an insock orother cushioning layer inside the shoe.1.4 This test method is not intended for use as a test of shoesclassif
6、ied by the manufacturer as childrens shoes.1.5 The type, size or dimensions and thickness of thespecimen, and the reference maximum energy applied shallqualify test results obtained by this test method.1.5.1 Nominal specimen thickness values for this testmethod are in the range from 10 to 60 mm (0.4
7、 to 2.4 in.). Thearea of the shoe to be tested must present an approximatelycircular, flat surface of at least 65 mm (2.6 in.) in diameter forimpacting.1.5.2 The standard value for the reference maximum energyapplied by this test method is 5 J (44.2 in.-lbf) for shoes whichare subject to moderate im
8、pacts during normal use and 7.0 J(61.9 in.-lbf) for shoes which are subject to high impactsduring normal use. Other values may be used, if they are statedin the report.1.6 This test method is not appropriate for measuring theimpact response of shoes that are not subjected to moderateimpact or high i
9、mpact in normal use.1.7 The values stated in SI units are to be regarded asstandard.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
10、 determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2F 1614 Test Method for Shock Attenuating Properties ofMaterials Systems for Athletic Footwear3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 cushioning systemone or
11、more components of thesole of a shoe intended for the redistribution of force or shockattenuation, or both, including one or more of the insock,insole, midsole, and outsole.3.1.2 drop heightheight from which the falling mass isdropped, being the distance between the top of the specimenand the top of
12、 the tup.3.1.3 impactrapid deceleration of the lower extremity dueto collision between the foot and the surface.3.1.3.1 impact energykinetic energy of the falling weightof an impact test machine at the instant the face of the tup firstcontacts the cushioning system under test.NOTE 1For a given impac
13、t energy, the maximum energy appliedvaries, depending on the properties of the cushioning system under test.The difference between the impact energy and the maximum energyapplied is the additional potential energy lost by the falling mass betweenthe initial contact with the cushioning system and the
14、 point of maximumdisplacement.3.1.3.2 low impactimpact during which the peak groundreaction force is less than 1.5 body weights and the peak axialdeceleration of the lower leg is less than 4 g.3.1.3.3 moderate impactimpact during which the peakground reaction force is greater than 1.5 body weights a
15、nd less1This test method is under the jurisdiction of ASTM Committee F08 on SportsEquipment and Facilities and is the direct responsibility of Subcommittee F08.54 onAthletic Footwear.Current edition approved May 1, 2006. Published May 2006. Originallyapproved in 1999. Last previous edition approved
16、in 1999 as F 1976 99.2For 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.1Copyright ASTM International, 100 Barr
17、Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.than 3 body weights and the peak axial deceleration of thelower leg is greater than 4 g but less than 8 g.3.1.3.4 high impactimpact during which the peak groundreaction force exceeds 3 body weights or the peak axialdecelerati
18、on of the lower leg exceeds 8 g.3.1.4 maximum energy appliedenergy applied to thespecimen up to the point of maximum compressive displace-ment.3.1.5 shoe uppervamp, tongue, heel counters, throat,collar, and other parts of the shoe that do not form part of thecushioning system.3.1.6 tupleading surfac
19、e of moving portion of test ma-chine in contact with specimen during the impact cycle.4. Summary of Test Method4.1 A test specimen is supported on a rigid foundation andrapidly loaded in compression by a falling mass. The compres-sive force is applied through the circular flat face of 45-mm(1.8-in.)
20、 diameter tup. Force and displacement transducers areemployed for continuous measurement of the complete loadingand unloading compression cycle. Alternatively, specimendisplacement history may be calculated from the force history.4.2 The maximum energy applied to the test specimen mustbe within 610
21、% of a standard reference value. The referencevalue is typically 5 J (44.2 in.-lbf) or 7 J (61.9 in.-lbf) but maybe varied depending of the type of shoe and whether the heelor forefoot is being tested. Other reference energy values maybe used, if they are stated in the report.4.3 This test method us
22、es the gravity-driven impact of adefined mass as the method for force application. The impactvelocity is determined by the drop height. The maximum forceand maximum displacement are determined by the cushioningcharacteristics of the shoe. The maximum energy applied isdetermined by both the drop heig
23、ht and the cushioningcharacteristics of the shoe.5. Significance and Use5.1 This test method is used by athletic footwear manufac-turers and others, both as a tool for development of athleticshoe cushioning systems and as a test of the general cushioningcharacteristics of athletic footwear products.
24、 Adherence to therequirements and recommendations of this test method willprovide results that can be compared between different labo-ratories.5.2 Data obtained by these procedures are indicative of theshock-attenuating properties of athletic shoe cushioning sys-tems under the specific conditions se
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