1、Designation: F717 10 An American National StandardStandard Specification forFootball Helmets1This standard is issued under the fixed designation F717; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision. A num
2、ber in parentheses indicates the year of last reapproval. A superscriptepsilon () indicates an editorial change since the last revision or reapproval.INTRODUCTIONThis specification addresses shock absorption requirements of football helmets. The accelerationlimits described herein were guided by the
3、 state-of-the-art technology concerning mechanisms andtolerance of head injury and by the performance of current football helmets, and should not be usedas limitations for human tolerance or as limits of acceptance for other test procedures.In addition to the minimum performance tests and inspection
4、 procedures described, it is the intentof this specification that the same acceleration limits apply for velocities lower than that required inthe impact test, and at all helmet locations above the reference plane.Other intentions that were not amenable to testing or inspection are offered as guidel
5、ines: (1) thechin strap and cup should be attached to the helmet in a manner to enable the helmet to remain in itsnormal position on the wearers head during play and impact conditions; (2) the physicalcharacteristics of materials used in construction of the helmet should retain their shock-absorbing
6、characteristics under the influence of aging, use, or exposure to typical environmental conditions.1. Scope1.1 This specification covers new and reconditioned footballhelmets intended for use in competitive play and practice withparticular reference to shock attenuation requirements.1.2 This specifi
7、cation establishes shock absorption require-ments of complete helmets when tested in accordance with TestMethod F429 and establishes requirements for construction,materials, visibility, and labeling.1.3 The values stated in SI units are to be regarded asstandard. No other units of measurement are in
8、cluded in thisstandard.2. Referenced Documents2.1 ASTM Standards:2F429 Test Method for Shock-Attenuation Characteristics ofProtective Headgear for Football3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 reference indexthe manufacturers recommended di-mension from the lowest po
9、int of the helmet face opening tothe basic plane of a reference headform, both points located onthe median plane of the helmet.3.2 For descriptions of other terms used in this specification,refer to Test Method F429.4. Materials and Manufacture4.1 The materials used in those parts of the helmet whic
10、hcontact the head shall not be of a type known to cause irritationor disease. Paints, glues, and finishes used in manufacture shallbe compatible with materials used in the helmet shell andshock absorption system.4.2 The helmet, as tested, shall have no rigid externalprojections greater than 1.6 mm i
11、n height, except for face-guard; chin strap, nose bumper, or sweatband hardware. Anyfaceguards or faceguard hardware installed on the helmet mustbe removed prior to testing.4.2.1 All allowable external projections shall be smooth androunded so as to minimize the potential of injury.4.3 Any internal
12、rigid projections that can contact thewearers head during impact shall be protected by some meansof cushioning or force spreading.4.4 The helmet shall provide peripheral vision clearance ofat least 105 to each side of the median plane when the helmetis adjusted to the reference headform with the ref
13、erence index.1This specification is under the jurisdiction of ASTM Committee F08 on SportsEquipment and Facilitiesand is the direct responsibility of Subcommittee F08.53 onHeadgear and Helmets.Current edition approved Aug. 1, 2010. Published September 2010. Originallyapproved in 1981. Last previous
14、edition approved in 2006 as F717 89 (2006).DOI: 10.1520/F0717-10.2For 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 webs
15、ite.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesNOTICE: This standard has either been superseded and replaced by a new version or withdrawn.Contact ASTM International (www.astm.org) for the latest information15. Impact Requirements
16、5.1 Each helmet model presented for impact testing shall befurnished with a reference index (see 3.1.1) as established bythe helmet manufacturer. This reference index shall be usedduring reference marking as described in the Test Proceduressection (portion on Reference Marking) of Test Method F429.5
17、.2 Each helmet tested in compliance to Test Method F429shall meet the following requirements:5.2.1 In accordance with Test Method F429 (Test Proce-dures section, portion on Multiple Impacts), the average gmaxof each set of three impacts delivered to six test locations perhelmet shall not exceed 275
18、g. For the additional three impactsdelivered to the two test locations with the highest mean gmax,no single impact shall have a gmaxthat exceeds 300 g.5.2.2 In accordance with Test Method F429 (Test Proce-dures section, portion on Multiple Impacts), for helmetsexposed to high and low temperatures an
19、d to water immersionat the two required test locations, no single impact shall havea gmaxthat exceeds 300 g.5.3 Internal shock-absorbing components of the helmetshall not become detached or loose during impact tests or showpermanent deformation or physical damage.5.4 A test report of impact tests as
20、 described in the ReportSection of Test Method F429 shall be an integral part of thisspecification.6. Product Marking and Labeling6.1 Each helmet shall be provided with instructions forproper sizing and adjustment.6.2 Each helmet shall be permanently labeled with thefollowing items:6.2.1 Identificat
21、ion of the manufacturer. If the helmet hasbeen reconditioned, the identification of the reconditioner shallalso be included.6.2.2 Uncoded date of manufacture. If reconditioned, dateof reconditioning shall also be included.6.2.3 Model designation.6.2.4 Size or size range.6.2.5 Warning concerning impr
22、oper cleaning agents andpaints.6.3 In addition to the helmet requirements of 6.2, the usershall be provided with a warning on a permanent labelconcerning improper attachment or application of hardware,such as face masks, that would compromise the shock-absorbing abilities of the helmet.ASTM Internat
23、ional takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely the
24、ir own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should
25、be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standar
26、ds, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).F717 102
