1、Designation:F239709(Reapproved 2015)An American National StandardStandard Specification forProtective Headgear Used in Martial Arts1This standard is issued under the fixed designation F2397;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revi
2、sion,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 forhead protection used for training and competition in
3、 martialarts such as karate,wushu,and taekwondo,where normalcontact between participants may be repeated,but is limited toa level that is not intended to produce injury.These activitiestypically take place in indoor or outdoor environments wherethe temperature is moderate.This specification recogniz
4、es thedesirability of a lightweight and streamlined construction,andventilation;however it is a performance specification,and isnot intended to restrict design.1.2 All testing and requirements of this specification shallbe in accordance with Test Methods F1446,except where notedin this specification
5、.1.3 Partial utilization of this standard 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 specification is consi
6、dered tohave failed the specification,and shall not be distributed orsold with any indication that it meets parts of the specification.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 The following safety caveat applies to
7、 the chemical,mechanical,or physical,or a combination thereof,test methodsdescribed herein and is meant specifically for those performingthe tests(in an effort to provide them with notice to take theappropriate precautions when conducting the tests):This stan-dard does not purport to address all of
8、the safety concerns,ifany,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.2.Referenced Documents2.1 ASTM Standards:2F1446 Test Methods for Equipmen
9、t and Procedures Used inEvaluating the Performance Characteristics of ProtectiveHeadgear3.Terminology3.1 See Test Methods F1446.4.Significance and Use4.1 The purpose of this specification is to provide reliableand repeatable test methods for the evaluation of protectiveheadgear for martial arts trai
10、ning and competition.Injuriesresulting from accidentally hard hand-to-head impacts,foot-to-head impacts,and head-to-ground impacts may be decreased inseverity and,in some cases,prevented.No headgear canprotect against all impacts,foreseeable or not.Forces resultingfrom strikes to the head due to kic
11、ks,punches,and falls are notwell understood.The mechanism of possible injury is notaddressed in this specification.5.Certification5.1 See Test Methods F1446.6.Apparatus6.1 Test HeadformsHeadforms to be used for the stabilityand falling impact tests in this specification are as defined inTest Methods
12、 F1446.The appropriate size headform shall beselected for the headgear to be tested.For the striking impacttests in this specification,it is acceptable to use the appropriatesize Hybrid III head-and neck-forms.6.2 Stability Test Instruments and EquipmentStability testinstruments and equipment shall
13、be in accordance with therequirements of the roll-off test described in Test MethodsF1446.6.3 Falling Impact Test Instruments and EquipmentImpact test instruments and equipment for falling impact shall1This specification is under the jurisdiction of ASTM Committee F08 on SportsEquipment,Playing Surf
14、aces,and Facilitiesand is the direct responsibility ofSubcommittee F08.53 on Headgear and Helmets.Current edition approved Jan.1,2015.Published February 2015.Originallyapproved in 2004.Last previous edition approved in 2009 as F2397 09.DOI:10.1520/F2397-09R15.2For referenced ASTM standards,visit the
15、 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United Stat
16、es1 be in accordance with the requirements of Test Methods F1446,using the flat anvil described in Test Methods F1446.6.4 Striking Impact Instruments and EquipmentAll testsfor striking impact shall be performed with a Hybrid IIIheadform and neck.A tri-axial accelerometer capable ofmeasuring impact of at least 1000-G and frequencies greaterthan 3 kHz,mounted at the center of mass of the headform,shall be used to measure the resultant acceleration of theheadform.The headform and neck are to be rig
