1、Designation: F 1458 04Standard 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 revision, the year
2、 of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 protect the foot whenop
3、erating 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 determine any one o
4、r 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 This standard does not purport to address all of
5、 thesafety concerns, if any, associated with its use. 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.1.5 The values stated in SI units or in other units shall beregarde
6、d separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each systemmust be used independently of the other, without combiningvalues in any way.2. Referenced Documents2.1 ASTM Standards:2D 123 Terminology Relating to TextilesD 1056 Specification for Flexible
7、 Cellular MaterialsSponge or Expanded RubberD 1776 Practice for Conditioning Textiles for TestingF 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 Cha
8、nges 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:5
9、FS 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 intersect
10、ion 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 wh
11、ich 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
12、higher 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 of
13、ASTM Committee F23 onProtective Clothing and is the direct responsibility of Subcommittee F23.20 onPhysical Properties.Current edition approved October 1, 2004. Published October 2004. Originallyapproved in 1998. Last previous edition approved in 1998 as F 1458 - 98.2For referenced ASTM standards, v
14、isit 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), One Davis Dr.,
15、P.O. Box 12215, Research Triangle Park, NC 27709-2215.4Available from Standardization Documents Order Desk, Bldg. 4, Section D,700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.5Available from Superintendent of Documents, U.S. Government PrintingOffice, Washington, DC 20402.1Copyright ASTM
16、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 jammingor chain stop.3.1.7 fo
17、ot, 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 frominjury due to contact
18、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 manifested by a protective garment
19、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 part of the footwear to a ver
20、tical 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 upper, nthat area of the fo
21、otwear 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 protective clothing terms
22、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 specified locations.4.2.1 The cu
23、tting 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 top and thebottom of the te
24、st 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 defining the level of cut resi
25、s-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 the moving saw chain; (2)
26、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) any combination of these.5.3
27、 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 laboratories. Competent statistic
28、alassistance 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. If a bias is found, eithe
29、r 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 Footwear withProtective Devi
30、ces: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 resistance of the foot protective
31、device.NOTE 1Securing 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 Device6:6.3.1 The footwear form used for mounting a removablefoot protective device shall be similar t
32、o 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 used to secure thedevice to footwear.6A footwear form can be obtained from Satra, Satra House, Rockingham Road,Kettering, Northants, NN16 9JH, England.FIG. 1 Upper Cut Test Posi
33、tionF 1458 0426.3.3 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 accordance with Test Method F
34、 1414.6.5 Chain Saw Support BracketThe chain saw supportbracket is in accordance with Test Method F 1414.6.6 Interfaced Data Acquisition SystemThe interfaceddata acquisition system is in accordance with Test MethodF 1414.FIG. 2 Upper Test Cut PositionFIG. 3 Toe Cut Test PositionFIG. 4 Toe Cut Test P
35、ositionF 1458 0436.7 Filling Material7:6.7.1 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 footwear with chain saw cut protectionwhich is an integral part of th
36、e 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 2The weight can be a bag containing leadshot, sand, steelpellets, or some other material to achieve the de
37、sired mass.7. HazardsNOTE 3Warning: 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 is suggested that thespark plug wire be disengaged until the engine
38、 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 the saw chain slides over the specimen, atimer should limit the test
39、 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 eyeprotection to avoid potential eye injury.7.5 The chain saw engi
40、ne 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 agreementbetween the client and the facility using this test meth
41、od. 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, oneleft-foot protective device and one right-foot protective dev
42、ice.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 established safety standard, aminimum of six specimens (3 pairs) at each t
43、est 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 described in Test MethodF 1414 shall be utilized for this test meth
44、od.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 Protective Devices Permanently Attached:10.2.1 Textile MaterialsCondi
45、tion 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 the same manner as footwear.10.3 Foot Protective Devices Not Perm
46、anently 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 that are not permanently attached to thefootwear in the same mann
47、er as footwear.11. Procedure11.1 Preparation and Mounting of Specimen:7Style No. LM-6007-00 polyethylene pellets made by Quantum Chemical Corp.,11500 N. Lake Drive, Cincinnati, OH 45249 have been found to be satisfactory. Anequivalent may be used.FIG. 5 Footwear Form for Gaiter/LinerF 1458 04411.1.1
48、 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 footwear withfilling material to a level above the ankle area of the footwear.The weight in accordance with Section 6 shall be used tosecure t
49、his 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 the bottom timing wire from the interfaceddata acquisition system perpendicular to the horizontal axis ofthe guide bar at the point of contact a
