1、Designation: F2992/F2992M 15Standard Test Method forMeasuring Cut Resistance of Materials Used in ProtectiveClothing with Tomodynamometer (TDM-100) TestEquipment1This standard is issued under the fixed designation F2992/F2992M; the number immediately following the designation indicates the yearof or
2、iginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the measurement of the cutresistance
3、of a material when mounted on a mandrel andsubjected to a cutting edge under a specified load using theTomodynamometer (TDM-100).1.1.1 This procedure is not valid for high-porosity materialswhich allow cutting edge contact with the mounting surfaceprior to cutting.1.1.2 Test apparatus may have limit
4、ations in testing materi-als with a thickness greater than 20 mm.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combin
5、ingvalues from the two systems may result in non-conformancewith the standard.1.3 This standard does not purport to address all of 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 deter
6、mine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD1000 Test Methods for Pressure-Sensitive Adhesive-Coated Tapes Used for Electrical and Electronic Applica-tionsD1776 Practice for Conditioning and Testing T
7、extilesF1494 Terminology Relating to Protective ClothingF1790 Test Method for Measuring Cut Resistance of Mate-rials Used in Protective Clothing with CPP Test Equip-ment2.2 ISO Standards:3ISO 13997 Protective ClothingMechanical PropertiesDetermination of Resistance to Cutting by Sharp Objects3. Term
8、inology3.1 Definitions:3.1.1 cut resistance, nin blade cut testing, the propertythat hinders cut through when a material or a combination ofmaterials is exposed to a sharp-edged device.3.1.2 cut through, nin blade cut resistance tests, thepenetration of the cutting edge entirely through material asi
9、ndicated by electrical contact of the cutting edge and theconductive strip or substrate.3.1.3 cut through distance, nin cut resistance testing, thedistance of required travel by the cutting edge to cut throughthe specimen.3.1.4 cutting edge, nin cut resistance tests, a sharp-edgeddevice used to init
10、iate cut through of a planar structure.3.1.5 no cut, nin cut resistance testing, a trial for whichthe load used is insufficient to cause a cut through in themaximum allowable blade travel of the apparatus.3.1.5.1 DiscussionFor this test method, the maximumallowable blade travel is 65 mm 2.6 in.3.1.6
11、 protective clothing, nan item of clothing that isspecifically designed and constructed for the intended purposeof isolating all or part of the body from a potential hazard; or,isolating the external environment from contamination by thewearer of the clothing.3.1.6.1 DiscussionIn this test method, t
12、he potential hazardis cutting.3.1.7 calculated cutting load, nin cut resistance testing,the load required to cause a cutting edge to produce a cutthrough when it traverses the reference distance across thematerial being tested.1This test method is under the jurisdiction ofASTM Committee F23 on Perso
13、nalProtective Clothing and Equipment and is the direct responsibility of SubcommitteeF23.20 on Physical.Current edition approved July 1, 2015. Published August 2015. DOI: 10.1520/F2992_F2992M-15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at
14、serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from International Organization for Standardization (ISO), ISOCentral Secretariat, Chemin de Blandonnet 8, CP 401, 1214 Vernier, Geneva,Switzerland, http:/
15、www.iso.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.7.1 DiscussionThe calculated cutting load is deter-mined by performing a series of tests at three or more loads asdescribed in Section 11. A material with a higher calcul
16、atedcutting load is considered to be more cut resistant.3.1.8 reference distance, nin cut resistance testing, astandardized distance for a blade to travel across a material toproduce a cut through.3.1.8.1 DiscussionFor this test method, the referencedistance is 20 mm 0.8 in.3.2 Additional Terminolog
17、yTerms relevant to textiles aredefined in Terminology D123. Terms relevant to protectiveclothing are defined in Terminology F1494.4. Summary of Test Method4.1 A cutting edge under a specified load is moved one timeacross a specimen mounted on a mandrel.4.2 The cut through distance from initial conta
18、ct to cutthrough is determined for each load.4.2.1 A series of tests, at a minimum of three different loadsmust be performed to establish a range of cut distance at thesedifferent loads.4.3 The test method is repeated using multiple loads todetermine the calculated cutting load for the material.5. S
19、ignificance and Use5.1 This test method assesses the cut resistance of a materialwhen exposed to a cutting edge under specified loads. Dataobtained from this test method can be used to compare the cutresistance of different materials.5.2 This test method only addresses that range of cuttinghazards t
20、hat are related to a cutting action by a smooth sharpedge across the surface of the material. It is not representativeof any other cutting hazard to which the material may besubjected such as serrated edges, saw blades, or motorizedcutting tools. Nor is it representative of puncture, tear, or otherm
21、odes of fabric failure.6. Apparatus6.1 Test PrincipleThe principle of the cut test is tomeasure the distance traveled by a cutting edge as it ismaintained under a load during the test. The cut test apparatusconsists of the following primary components (see Fig. 1): (A)blade holder and straight line
22、mechanism (B) a cutting edge, aSpecimen (C) with conductive strip (D) and double sideMounting Tape (E) mounted to a (F) mandrel. The apparatusshould propel the cutting edge across the specimen untilsufficient work is applied to cause the specimen to cut through.6.2 TDM-100 Test Apparatus4The TDM-100
23、 is capableof measuring the entire range of cut resistant materials througha horizontal constant speed of blade movement. The maximumlinear displacement of the blade is 70 mm 2.75 in. for thecutting edge. A constant perpendicular force is applied to thespecimen throughout blade movement. The TDM-100
24、 testapparatus (see Fig. 2) consists of a Motor and gearhead (1)with Slide system (2) and Blade support/clamp mechanism (3)and Blade (4) in contact with the specimen mounted on acantilevered Mandrel and holder (5). The Beam (6) is con-nected to the mandrel. Cutting edge displacement is measuredby a
25、Distance meter (7) capable of measuring to 0.1 mm 0.004in. Weights are placed on the Platen (8). These weightsgenerate the load needed to penetrate the moving edge into thespecimen and produce a cut through. The resulting load appliedto the specimen against the blade equals twice the total weightpla
26、ced on the platen. The calibration weights (9) are used tobalance the beam with sample prior to adding weight to thelever arm. Movement of the Mandrel and holder mechanism isfacilitated by use of the Loading unloading handle (10).Leveling adjustment is facilitated by the Level mechanism(11). The app
27、aratus should be capable of loads ranging from 10g to 15 kg 0.35 oz to 33 lb.6.2.1 Cutting SpeedThe apparatus shall propel the cuttingedge across the specimen at a constant speed of 2.5 6 0.5 mm/s0.10 in./s.6.2.2 Cut Through DistanceCut through is detected by anelectrical contact between the cutting
28、 edge and conductivestrip.4The sole source of supply of the TDM-100 Tomodynamometer is RGIIndustrial Products, Inc., 755 Pierre Caisse, St-Jean-sur Richelieu, Quebec, Canada8C6 7Y5, E-mail: . If you are aware of alternativesuppliers, please provide this information to ASTM International Headquarters
29、.Your comments will receive careful consideration at a meeting of the responsibletechnical committee,1which you may attend.FIG. 1 Schematic of Cut Test PrincipleF2992/F2992M 1526.2.3 MandrelThe top surface of the mandrel is a roundedform which has an arc of at least 32 mm 1.25 in in a circlehaving a
30、 radius of 38 mm 1.5 in. The surface of the mandrelshall be conductive and made of metal.6.3 Cutting EdgeSingle-edged razor blades5shall be usedas the cutting edge. The blades shall be made of stainless steelwith a hardness greater than 45 HRC. Blades shall be 1.0 6 0.5mm 0.039 6 0.020 in. thick and
31、 ground to a bevel width of2.5 6 0.2 mm 0.098 6 0.008 in. along a straight edgeresulting in a primary bevel angle of 22 6 2. The bladeshould also contain a honed secondary bevel at the cutting edgewith an inclined angle of 36 6 2. Blades shall have a cuttingedge length greater than 65 mm 2.56 in. an
32、d shall have awidth greater than 18 mm 0.71 in.6.4 Conductive StripA 6-mm 0.26-in. wide copper oraluminum conductive strip with adhesive backing will be usedthat is no thicker than 0.3 mm 0.01 in. The conductive stripwill be centered down the length of the mandrel between thesample and mounting tape
33、. For samples that contain electri-cally conductive materials, elimination of the conductive metalstrip is permitted.6.5 Mounting TapeDouble-sided tape6shall be used tosecure the test specimen to the apparatus. The tape should havea cloth carrier and rubber-based adhesive on both sides with atotal t
34、hickness of 0.38 6 0.25 mm, weight of 473 6 33 g/m2,and a minimum tensile strength of 90 N/cm (see Test MethodsD1000 for details on test methods for adhesive tape).7. Hazards7.1 The cut test equipment can pose a potential hazard to thetechnician if proper safety precautions are not followed. Thecut
35、test apparatus is to be used only by authorized personnelthat have been properly trained.7.2 Store used blades in a sealed container.7.3 Remove blades from the apparatus at the end of eachtest or when the apparatus is not in use.7.4 Keep hands out of cutting area when a blade is installedin the appa
36、ratus and when the apparatus is operating.7.5 Turn off machine before making instrument adjustmentsto avoid the chance of a low-voltage shock.8. Sampling and Test Specimens8.1 Lot SampleAs a lot sample for acceptance testing, takeat random the number of shipping units directed in anapplicable materi
37、al specification.8.2 Laboratory SampleAs a laboratory sample for accep-tance testing, take at random from each shipping unit in the lotsample, the number of packages or pieces directed in anapplicable material specification or other agreement betweenpurchaser and the supplier.8.3 Protective Clothing
38、 SampleA sample of actual Protec-tive Clothing Article.8.4 Test Specimens:8.4.1 Take test specimens at random from each sample.8.4.1.1 When performing up to fifteen cut tests perspecimen, as when determining the reference load of the5Blade 88-0121 Type GRU-GRU textile blade available from Energizer
39、PersonalCare, LLC (formerly American Safety Razor Company), One Razor Blade Lane,Verona, VA 24482 has proven satisfactory for this test method. It is the sole sourceof supply of the apparatus known to the committee at this time. If you are aware ofalternative suppliers, please provide this informati
40、on to ASTM InternationalHeadquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee,1which you may attend.6Polyken 108Fr Double-Coated Cloth Tape manufactured by Berry PlasticsCorporation or equivalent has proven satisfactory for this test method
41、.FIG. 2 Schematic of the TDM-100 Tester (Front View)F2992/F2992M 153material, the specimen shall have a minimum dimension of25.4 by 100 mm 1.0 by 4.0 in.8.4.1.2 For textile materials, cut the specimen on the bias asto create an angle of 0.785 rad (45) between the machine andcross-machine directions
42、of the material (see TerminologyD123 for the definition of machine directions of textilematerials).NOTE 1For small samples of insufficient width to cut the sample onthe bias, such as protective clothing, cut the test specimen parallel to themachine direction up to the maximum allowable width and the
43、n rotate it0.785 rad (45) when mounting it on the apparatus.9. Calibration and Standardization9.1 Beam Balancing Procedure #1:9.1.1 Remove any sample or tape from the sample holder.9.1.2 Install sample holder on the base.9.1.3 Carefully control the vertical movement of the sampleholder when unlockin
44、g the cam lock device with the loading/unloading handle.9.1.4 Place the mechanism horizontally.9.1.5 If mechanism stays in equilibrium, the apparatus iscorrectly balanced. If mechanism loses equilibrium, followprocedure #2 (9.2) for beam balancing.9.2 Beam Balancing Procedure #2:9.2.1 Lock movement
45、of the beam in the higher positionwith cam lock device.9.2.2 Remove blade holder with the quick release ball lockdevice.9.2.3 Place the mechanism horizontally.9.2.4 Counterbalance with the two fine adjustment nuts untilthe mechanism stays in equilibrium.9.3 Validation of Cutting Edge Supply:9.3.1 Ca
46、libration MaterialCalibration material is a neo-prene sheet,7having a hardness of 50 6 5 Shore A and athickness of 1.57 6 0.05 mm 0.062 6 0.002 in.9.3.1.1 Store the calibration material under controlled labo-ratory conditions described in Practice D1776 in an opaquecontainer to prevent deterioration
47、 by heat or ultraviolet light.9.3.2 Blade Validation Procedure:9.3.2.1 Take a specimen of the calibration material andfollow the mounting procedure as described in 11.1.9.3.2.2 Calculate the average cut through distance using aminimum of 1 blade cut out of 20 for each blade supply byperforming a cut
48、 test with each blade following the testprocedure described in 11.2 using a cutting load of 500 gf.9.3.2.3 To be a valid blade supply, the average cut throughdistance for the blade supply must be between 15.0 and 25.0mm 0.6 and 1.0 in., and the cut through distances for all thetested blades in the s
49、upply should not differ by more than 10mm 0.4 in.10. Conditioning10.1 Condition test specimens as indicated in PracticeD1776.11. Procedure11.1 Specimen Mounting:11.1.1 Cover the mandrel surface with double-sided tapeand place a 6-mm 0.25-in. conductive strip with the adhesiveside up centered down the length of the mandrel on the doublesided tape. Clip the end of this strip to the mandrel, or attachit securely to the electrical circuit that detects cut through.Without
