ASTM F2397-2009 Standard Specification for Protective Headgear Used in Martial Arts《军体运动中使用的防护安全帽标准规范》.pdf
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1、Designation: F2397 09An 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 revision, the yea
2、r 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 martia
3、larts 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 recognize
4、s 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 specificat
5、ion.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
6、considered 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 app
7、lies to 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 add
8、ress all of 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 Meth
9、ods for Equipment and Procedures Used inEvaluating the Performance Characteristics of ProtectiveHeadgear3. Terminology3.1 See Test Methods F1446.4. Significance and UseThe purpose of this specification is to provide reliable andrepeatable test methods for the evaluation of protective head-gear for m
10、artial arts training and competition. Injuries resultingfrom accidentally hard hand-to-head impacts, foot-to-headimpacts, 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
11、 to the head due to kicks, 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 a
12、re as defined inTest Methods 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 test
13、instruments and equipment shall 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
14、 on SportsEquipment and Facilities and is the direct responsibility of Subcommittee F08.53 onHeadgear and Helmets.Current edition approved Nov. 1, 2009. Published December 2009. Originallyapproved in 2004. Last previous edition approved in 2004 as F2397 04a. DOI:10.1520/F2397-09.2For referenced ASTM
15、 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 Harbor Drive, PO Box C700, West Conshohoc
16、ken, PA 19428-2959, United States.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 acceleromet
17、er 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 rigidly connectedat the neck to a 25-kg steel mass, and suspended head
18、-down ona flexible joint. The striker shall be an aluminum tube with alength of 500 6 5 mm from its pivot point to the strike point,extend an additional 50 6 5 mm beyond the strike point, andhave an external diameter of 80 6 5 mm. The mass of the tubeshall be 4.5 6 0.2 kg, uniformly distributed alon
19、g its length.The striker shall be loaded with a spring or a falling mass, suchthat when the striker is rotated back and released, it rotatesforward toward the headform and strikes it at the designatedpoints. No force is to be applied to the striker by the spring orfalling mass once the striker rotat
20、es forward beyond the initialimpact point, however, the striker must be free to rotateforward after impact. Rotating the striker further backwardsbefore releasing it can increase the striking speed. The terminalspeed impact shall be measured within 100 mm of the point offree rotation. A schematic di
21、agram of a typical striking impacttester is shown in Fig. 1.7. Samples for Testing7.1 Conditions and attachments in accordance with TestMethods F1446.7.2 Number of SamplesA test normally requires sevensamples of each size. All testing may be done on two sizegroups only if the material, material thic
22、kness, and construc-tion of all the sizes are the same, that is, differing in coveragearea only. If only two size groups are tested, the sizes mustrepresent the largest and smallest sizes that will fit theappropriate headform. If the material, material thickness, orconstruction is different between
23、each size, then all sizes mustbe tested.8. Calibration and Standardization8.1 See Test Methods F1446.9. Conditioning Environments9.1 See Test Methods F1446. The ambient temperature andwater immersion environments shall be used.9.2 The following modified high temperature environmentshall be used. The
24、 sample shall be kept in a 47 to 53Cenvironment for 4 to 24 h. The sample shall then be kept in a35 to 40C environment for 4 to 24 h. Testing must beginwithin 1 min after removal from this final conditioningenvironment. Before further testing, the headgear must bereturned to the final conditioning e
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- ASTMF23972009STANDARDSPECIFICATIONFORPROTECTIVEHEADGEARUSEDINMARTIALARTS 军体 运动 使用 防护 安全帽 标准规范 PDF
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