ASTM F1458-2004(2008) Standard Test Method for Measurement of Cut Resistance to Chain Saw of Foot Protective Devices《量护脚设备耐链锯切割的标准试验方法》.pdf

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1、Designation: F 1458 04 (Reapproved 2008)Standard Test Method forMeasurement of Cut Resistance to Chain Saw of FootProtective Devices1This standard is issued under the fixed designation F 1458; the number immediately following the designation indicates the year oforiginal adoption or, in the case of

2、revision, 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 test method measures cut resistance of foot protec-tive devices that are designed to protec

3、t the foot whenoperating a chain saw.1.2 This test method may be used to test for compliance tominimum performance requirements in established safety stan-dards.1.2.1 By agreement between the purchaser and the supplier,or as required by established safety standards, this test methodcan be used to de

4、termine any one or both of the following: (1)chainspeed 50 (CS50), (2) success/failure (jamming/chainstop) at specified chain speed.1.3 This test method may be used to determine levels ofprotection for areas of coverage as stipulated in establishedsafety standards.1.4 The values stated in SI units a

5、re to be regarded asstandard.NOTE 1The values stated in each system may not be exact equiva-lents; therefore, each system must be used independently of the other,without combining values in any way.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its u

6、se. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 123 Terminology Relating to TextilesD 1056 Specification for Flexible Ce

7、llular MaterialsSponge or Expanded Rubber,D 1776 Practice for Conditioning and Testing TextilesF 1414 Test Method for Measurement of Cut Resistance toChain Saw in Lower Body (Legs) Protective ClothingF 1494 Terminology Relating to Protective Clothing2.2 AATCC Test Methods:3AATCC 96 Dimensional Chang

8、es in Laundering of Wovenand Knitted Fabrics, Except Wool (1988)AATCC 158 Dimensional Changes on Drycleaning in Per-chloroethylene: Machine Method2.3 Military Standards:4MIL-STD-105 Sampling Procedure and Tables for Inspec-tion by AttributesMIL-C-12369 Cloth, Ballistic, Nylon2.4 Federal Standard:5FS

9、 5100-86 Type II, Cloth, Duck, Nylon, PolyurethaneCoated3. Terminology3.1 Definitions:3.1.1 centerline, nin foot protective devices, a line thatextends from the toe of the footwear horizontally along the soleto the heel vertically to the top of the footwear, and diagonallyto the point of intersectio

10、n at the toe.3.1.2 chain saw, na portable power-operated tool that hascutters linked in a chain used for cutting wood.3.1.3 chain speed, nthe velocity of synchronized move-ment of linked cutters around a bar and sprocket.3.1.4 chainspeed 50 (CS50), nfor chain saw protection,the mean velocity at whic

11、h cut through occurs.3.1.4.1 DiscussionThis value establishes the relationshipbetween the probability of cutting through the chain saw legprotective clothing (or foot protective device) and the speed ofthe saw chain. For lower chain speeds, the probability of cutthrough approaches zero, while for hi

12、gher chain speeds, theprobability of cut through approaches one.3.1.5 chain stop, nfor chain saw cut resistance, theresulting action when a material clogs (jams) the drive sprocketor slows the speed sufficiently to prevent advancement of thesaw chain.1This test method is under the jurisdiction ofAST

13、M Committee F23 on PersonalProtective Clothing and Equipment and is the direct responsibility of SubcommitteeF23.20 on Physical.Current edition approved June 15, 2008. Published July 2008. Originallyapproved in 1998. Last previous edition approved in 2004 as F 1458 - 04.2For referenced ASTM standard

14、s, 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.3Available from American Association of Textile Chemists and Colorists(AATCC), P.O. Box 12

15、215, Research Triangle Park, NC 27709, http:/www.aatcc.org.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.5Available from Superintendent of Documents, U.S. Government PrintingOffice, Washington

16、, DC 20402.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.1.6 cut resistance, nthe ability of a material, while incontact with the linked cutters, to resist cut through of thecutters of a moving saw chain, independent of either ja

17、mmingor chain stop.3.1.7 foot, nthe terminal part of the vertebrate leg, includ-ing the ankle, upon which an individual stands.3.1.8 foot protective device, nfor chain saw cut resis-tance, an article of personal equipment which covers the footand ankle for the purpose of providing limited protection

18、 frominjury due to contact with a moving saw chain.3.1.9 footwear, na boot or shoe of any construction.3.1.10 gaiter, nfor chain saw cut resistance, a footprotective device permanently attached to the outside of thefootwear.3.1.11 jamming, nfor chain saw cut resistance, the clog-ging action manifest

19、ed by a protective garment or device thatcan produce a chain stop.3.1.12 saw chain, na closed loop of cutters linked to-gether for use in a portable power-operated tool.3.1.13 toe area cut zone, nin the testing of foot protectivedevices, that area excluding the sole that extends from thefrontmost pa

20、rt of the footwear to a vertical plane 15 6 0.25mm behind the toe box; or in the absence of a toe box, the areathat extends to a vertical plane 65 6 6.25 mm from the front ofthe footwear.3.1.14 toe box, nin testing of foot protective devices, acomponent inserted into the toe area of footwear.3.1.15

21、upper, nthat area of the footwear above the sole.3.1.16 upper cut zone, nin the testing of foot protectivedevices, the area starting at the top of the area of protection onthe footwear and extending downward to include the entireupper, but excluding the toe area cut zone.3.2 For definitions of other

22、 protective clothing terms used inthis test method, refer to Terminology F 1494.4. Summary of Test Method4.1 Test specimens are securely mounted on a test appara-tus.4.2 A chain saw, of specific characteristic and operating at adesignated speed, is brought into contact with the test specimenat speci

23、fied locations.4.2.1 The cutting action of the saw chain will achieve one ofthree results (1) complete cut through, (2) no cut through whilesaw chain continues to run, or (3) complete chain stop.4.3 Data collection of cut resistance and CS50 is measuredelectronically by means of wires placed on the

24、top and thebottom of the test specimen to measure cut through time, andan electronic means to measure chain speed just prior tocontact with test specimen and after contact is initiated.5. Significance and Use5.1 The purpose of this test method is to provide a measur-able criterion of performance def

25、ining the level of cut resis-tance to the cutting action of a saw chain provided by footprotective devices.5.2 The protection, which can be demonstrated by the footprotective devices, tested in accordance with this test method,is achieved by (1) the material resisting cutting when put incontact with

26、 the moving saw chain; (2) a part of the materialbeing drawn into the saw chain and drive mechanism to blockthe saw chain movement; (3) the materials resisting cutting andabsorbing rotational energy so that saw chain speed can beslowed down sufficiently to stop the movement of the sawchain; or (4) a

27、ny combination of these.5.3 In case of a dispute arising from differences in reportedtest results, when using this test method for acceptance testingof commercial shipments, the purchaser and the suppliershould perform comparative tests to determine if there is astatistical bias between their labora

28、tories. Competent statisticalassistance is recommended for the investigation of bias. As aminimum, the two parties should take a group of test speci-mens from the same lot of components to be evaluated. The testspecimens should then be randomly assigned in equal numbersto each laboratory for testing

29、. If a bias is found, either its causemust be determined and corrected, or the purchaser and thesupplier must agree to interpret future test results in light of theknown bias.6. Apparatus6.1 Specimen Holder for Calibration, in accordance withTest Method F 1414.6.2 Mounting Bracket for Footwear and F

30、ootwear withProtective Devices:6.2.1 The mounting bracket must enable the footwear to bemoved so that test cuts can be made at stipulated positions (seeFig. 1 to 4).6.2.2 The mounting bracket shall enable footwear to besecured for testing in a manner that neither enhances norinhibits the cut resista

31、nce of the foot protective device.NOTE 2Securing or mounting mechanisms should enable footwear, ifnecessary, to be used for multiple evaluations of protective devices.6.3 Footwear Form for Mounting Removable Foot Protec-tive Device6,7:6The sole source of supply of the footwear form known to the comm

32、ittee at thistime is Satra, Satra House, Rockingham Road, Kettering, Northants, NN16 9JH,England.7If you are aware of alternative suppliers, please provide this information toASTM International Headquarters. Your comments will receive careful consider-ation at a meeting of the responsible technical

33、committee1, which you may attend.FIG. 1 Upper Cut Test PositionF 1458 04 (2008)26.3.1 The footwear form used for mounting a removablefoot protective device shall be similar to that shown in Fig. 5.6.3.2 The method of securing the foot protective device tothe form shall be the same as that method use

34、d to secure thedevice to footwear.6.3.3 The form shall then be secured for testing to theaforementioned mounting bracket in a manner that neitherenhances nor inhibits the cut resistance of the foot protectivedevice.6.4 Chain Saw and Related EquipmentThe chain saw andrelated equipment is in accordanc

35、e with Test Method F 1414.FIG. 2 Upper Test Cut PositionFIG. 3 Toe Cut Test PositionFIG. 4 Toe Cut Test PositionFIG. 5 Footwear Form for Gaiter/LinerF 1458 04 (2008)36.5 Chain Saw Support BracketThe chain saw supportbracket is in accordance with Test Method F 1414.6.6 Interfaced Data Acquisition Sys

36、temThe interfaceddata acquisition system is in accordance with Test MethodF 1414.6.7 Filling Material8,7:6.7.1 The filling material used to provide shape and mass tothe footwear shall be pellets made of a high-density polyeth-ylene similar to that used for injection molding.6.7.1.1 This includes foo

37、twear with chain saw cut protectionwhich is an integral part of the footwear, as well as thefootwear that is worn on the inside of a removable footprotective device.6.7.2 The filling material shall be held in place by coveringwith a weight of 2 kg 6 20 g.NOTE 3The weight can be a bag containing lead

38、shot, sand, steelpellets, or some other material to achieve the desired mass.7. HazardsNOTE 4Warning: The chain saw equipment used in the procedure ofthis test method can pose a potential danger to the technician if specificsafety precautions are not followed.7.1 As a minimum safety precaution, it i

39、s suggested that thespark plug wire be disengaged until the engine needs to bestarted.7.2 As a further safety precaution, it is suggested that thespark plug wire be grounded by circuitry after cutting the lowerwire of the data collection system. If the saw chain stops beforethe wire is cut, or if th

40、e saw chain slides over the specimen, atimer should limit the test and stop the engine by grounding theelectric circuitry of the chain saw.7.3 The technician performing these tests should use hear-ing protection to avoid potential loss of hearing.7.4 The technician performing these tests should use

41、eyeprotection to avoid potential eye injury.7.5 The chain saw engine should be vented to preventpotential danger posed by carbon monoxide.8. Sampling8.1 Lot SampleThe number of units that constitute aproduction lot and the number of samples required to beevaluated from that lot will be determined by

42、 agreementbetween the client and the facility using this test method. Thisdetermination must also consider how many units constitute ameaningful measurement of consistent quality that will resultin achievement of similar values.8.2 Number of Specimens:8.2.1 A pair is considered as two test specimens

43、, oneleft-foot protective device and one right-foot protective device.8.2.2 If this test method is used to determine CS50 aminimum of six specimens (3 pairs) at each test cut positionwill be needed.8.2.3 If this test method is used to determine “pass/fail” at aspecific saw chain speed of an establis

44、hed safety standard, aminimum of six specimens (3 pairs) at each test cut positionmust pass.8.2.4 If this test method is used to determine cut throughtime at a specified speed, a minimum of six specimens (3 pairs)at each test cut position will be needed.9. Calibration9.1 The calibration procedures d

45、escribed in Test MethodF 1414 shall be utilized for this test method.10. Conditioning10.1 Footwear:10.1.1 Place the footwear in a room with an ambientcondition of 70 6 10F (21 6 6C) and a relative humidity of50 6 15 %.10.1.2 Footwear shall be conditioned in this manner for atleast 24 h.10.2 Foot Pro

46、tective Devices Permanently Attached:10.2.1 Textile MaterialsCondition textile foot protectivedevices that are permanently attached to the footwear in thesame manner as footwear.10.2.2 Non-Textile MaterialsCondition non-textile footprotective devices that are permanently attached to the foot-wear in

47、 the same manner as footwear.10.3 Foot Protective Devices Not Permanently Attached:10.3.1 Textile MaterialsCondition textile foot protectivedevices that are not permanently attached to the footwear in thesame manner as footwear.10.3.2 Non-Textile MaterialsCondition non-textile footprotective devices

48、 that are not permanently attached to thefootwear in the same manner as footwear.11. Procedure11.1 Preparation and Mounting of Specimen:11.1.1 Footwear with Integral Chain Saw Protection orGaiter11.1.1.1 To test the toe area cut zone of footwear withintegral chain saw protection or gaiter, fill the

49、footwear withfilling material to a level above the ankle area of the footwear.The weight in accordance with Section 6 shall be used tosecure this material in place.11.1.1.2 To test the upper cut zone of footwear, with integralchain saw protection or gaiter, at all angles between 0 to 90,fill the footwear with a material that provides shape and mass;or depending upon the angle of cut, mount the footwear onto atapered form in accordance with Fig. 6 and Fig. 7.11.1.1.3 Secure the footwear to the mounting bracket of thetest apparatus.11.1.1.4 Position