1、Designation:F144718An American National StandardStandard Specification forHelmets Used in Recreational Bicycling or Roller Skating1This standard is issued under the fixed designation F1447;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revis
2、ion,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 specification covers performance requirements forhelmets manufactured for use by recreational bicyclis
3、ts orroller skaters.This specification recognizes the desirability oflightweight construction and ventilation;however,it is aperformance standard and is not intended to restrict design.1.2 All testing and requirements of this specification shallbe in accordance with Test Methods F1446,except where n
4、otedherein.1.3 Partial utilization of this specification is prohibited.Anystatement of compliance with this specification shall be acertification that the product meets all of the requirements ofthe specification in its entirety.A product that fails to meet anyone of the requirements of this specifi
5、cation is considered tohave failed the standard and should not be sold with anyindication that it meets parts of the standard.1.4 This standard is subject to revision at any time byASTM.It must be reviewed every five years and if not revisedeither reapproved or withdrawn.References to the standardmu
6、st include the version date.No references to a version thathas been replaced or withdrawn shall be placed on any productor its packaging manufactured more than 24 months after theeffective revision or withdrawal date.Go to astm.org to verifythe latest version of this standard.NOTE1The current editio
7、n of this standard was approved on June 1,2018.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the
8、 World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2F1446 Test Methods for Equipment and Procedures Used inEvaluating the Performance Characteristics of ProtectiveHeadgearF2043 Classification for Bicycle Usage3.Terminology3.1 Definitions of Te
9、rms Specific to This Standard:3.1.1 recreational bicycling,nbicycling in conditions upto Condition 3 as specified in Classification F2043.3.1.2 in-lines,nroller skates with all wheels on each skatearranged along a single longitudinal line.3.1.3 quads,nroller skates with four wheels on each skatearra
10、nged in a rectangular pattern.3.1.4 recreational roller skating,nskating horizontallyusing quads or in-lines but not roller hockey or trick rollerskating such as ramp jumping,sliding sideways,or skating onstairs.4.Headforms4.1 Headforms to be used in this specification are asspecified in the section
11、 on Test Headforms of Test MethodsF1446,using the variable mass drop assembly configuration.The appropriate size headform shall be selected in accordancewith the section on Headform Size of Test Methods F1446 forthe helmet to be tested.4.2 In addition to the provisions of Test Methods F1446,thecente
12、r of gravity of the headform must be within a 10 verticalcone from the center of impact and lie within a rectangular area28 by 12.8 mm oriented as shown in Fig.1.The center ofgravity of the drop assembly shall lie within 6.4 mm millime-ters of the Z-X plane,which is defined for twin wire systems ast
13、he plane containing the axes of the two guide wires,and formonorail systems as the plane containing the design center of1This specification is under the jurisdiction of ASTM Committee F08 on SportsEquipment,Playing Surfaces,and Facilities and is the direct responsibility ofSubcommittee F08.53 on Hea
14、dgear and Helmets.Current edition approved June 1,2018.Published June 2018.Originallyapproved in 1993.Last previous edition approved in 2012 as F1447 12.DOI:10.1520/F1447-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annu
15、al 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 StatesThis international standard was developed in accordance with internationally recogni
16、zed principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 the headform and the axis of the monorail.The center ofgravity of the drop assembly shall lie within 6.4 mm of the Y-Zplane on the side opposite the arm of the ball arm and within21.6 mm of the Y-Z plane on the side containing the ball armwhere the Y-Z plane is perpen
