1、Designation: F 1342 05Standard Test Method forProtective Clothing Material Resistance to Puncture1This standard is issued under the fixed designation F 1342; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision
2、. 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 determines the puncture resistance of aprotective clothing material specimen by measuring the forcerequired to ca
3、use a pointed puncture probe to penetrate throughthe specimen. This test method describes three protocols thatmay be used: Method A, Method B, and Method C.1.1.1 Method A requires the use of Probe A only. The probeused for testing shall be recorded in the test report.1.1.1.1 Probe A may be used to m
4、easure puncture resistancefor the following types of materials:(1) Elastomeric materials(2) Textiles(3) Coated materials1.1.2 Method B requires the use of Probe B. The probe usedfor testing shall be recorded in the test report.1.1.2.1 Probe B may be used to measure puncture resistancefor the followi
5、ng types of materials:(1) Textiles(2) Coated materialsNOTE 1Probe B is not suited for measuring the puncture resistance ofunsupported elastomeric materials.1.2 The values stated in SI units are to be regarded as thestandard. The values in inch-pound units in brackets are forinformation purposes only
6、. The values stated in each systemmay not be exact equivalents; therefore, each system must beused independently of the other, without combining values inany way.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the u
7、ser 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 2582 Test Method for Puncture-Propagation Tear Resis-tance of Plastic Film and Thin SheetingD 3767 Practice
8、for Rubber-Measurement of Dimensions3. Terminology3.1 Definition:3.1.1 protective clothing material, nany element, con-stituent, or substance from which protective clothing is com-posed or can be made.4. Summary of Test Method4.1 A material specimen is placed in a stationary supportassembly that is
9、in turn affixed to the lower arm of a tensiontesting machine.4.2 A pointed puncture probe of set dimensions is mountedto the test fixture and the whole assembly is attached to thecompression cell of the testing machine.4.3 The puncture probe is moved at a constant velocity untilit punctures the mate
10、rial specimen.4.4 The force required to puncture the material specimen ismeasured by the compression cell. The elongation (or deflec-tion) of the specimen prior to puncture is also measured. Thereported puncture resistance is the average of twelve testreplicates.5. Significance and Use5.1 This test
11、method evaluates puncture resistance of pro-tective clothing materials which may include plastics orelastomeric films, coated fabrics, flexible materials, laminates,or textile materials.1This test method is under the jurisdiction of ASTM Committee F23 onProtective Clothing and is the direct responsi
12、bility of Subcommittee F23.20 onPhysical Properties.Current edition approved May 1, 2005. Published June 2005. Originallyapproved in 1991. Last previous edition approved in 1996 as F 1342 91 (96)e2.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service
13、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 Conshohocken, PA 19428-2959, United States.5.2 This test method is not intended to measure
14、punctureresistance of all types of punctures encountered using protec-tive clothing material. This test method involves a procedurewhere a puncture probe of specified dimensions is used forpuncturing specimens.5.3 This test method evaluates puncture resistance of pro-tective clothing materials, spec
15、ifically for puncture forced onspecimens perpendicular to material surface. There is nosupporting structure under the material specimen.5.4 Evaluation of puncture resistance for snag-type punctureshould be performed in accordance with Test Method D 2582.6. Apparatus6.1 Thickness Gage, suitable for m
16、easuring thickness to thenearest 0.01 mm or the nearest 0.001 in., as specified in TestMethod D 3767, shall be used to determine the thickness ofeach protective clothing specimen tested.6.2 Testing Machine, shall meet the following criteria:6.2.1 It shall be capable of holding the specimen securelyb
17、etween the two clamps and be capable of straining thespecimen with a uniform movement.6.2.2 A machine capable of providing load versus elonga-tion data until point of rupture shall be used.6.2.3 The error of the machine shall not exceed 2 % at anyreading within its loading range.6.2.4 It shall be ou
18、tfitted with a compression cell. Thetesting machine may be configured with the compression cellon either the lower or upper arm. The compression cell shallhave a range sufficient enough to penetrate the specimen.6.3 Puncture Probes:6.3.1 Probe A, shall be fabricated to meet the dimensionsshown in Fi
19、g. 1. The puncture probe shall be fabricated fromstainless steel with a Rockwell Hardness of not less than 35.6.3.2 Probe B, shall be fabricated to meet the dimensionsshown in Fig. 2. The puncture probe shall be fabricated fromstainless steel with a Rockwell Hardness of not less than 35.6.3.3 Probe
20、C, shall be fabricated to meet the dimensionsshown in Fig. 3. The puncture probe shall be fabricated fromstainless steel with a Rockwell Hardness of not less than 35.6.3.4 See Fig. 4 for cross-section of probe and holder.6.4 Specimen Support Assembly, shall consist of two flatmetal specimen support
21、plates (see Fig. 5) that clamp togetherso the sample specimen is held tightly between them. It shallalso consist of a machine interface plate that can be connectedto the testing machine. There should be enough distance toallow for 25 mm 1 in. of travel of the probe.6.4.1 Each plate shall have one to
22、 three chamfered holesmeasuring 6.4 mm 0.25 in. for Probe A and 10 mm 0.39 in.for Probes B and C. For efficiency in testing, three holes spacedat the points for a 60 equilateral triangle may be used, suchthat each hole is 25 mm 1 in. from the other and from theedge of the specimen plate, as shown in
23、 Fig. 5.6.4.2 The two specimen support plates shall be connected tothe testing machine using a machine interface plate.7. Test Specimens7.1 Four to twelve test specimens, of dimensions to thespecimen support assembly, shall be prepared. The samplesshould be of a size that will not show puckering or
24、slippage ofsamples during the test. No sample conditioning is required.7.2 Use the specimen support plate as a template to cut testspecimens.8. Procedure8.1 Test Method A, use Probe A:8.1.1 Measure the thickness of each specimen at the punc-ture point (prior to puncture) to the nearest 0.01 mm 0.001
25、 in.and record.8.1.2 Mount the material specimen to be tested in thesupport assembly as shown in Fig. 6. Take care that the holesof the specimen support assembly are aligned prior to testing toavoid damaging the probe and plates.8.1.3 Attach the material support assembly to the testapparatus.8.1.4 P
26、osition puncture probe on the compression cell of thetest apparatus, as shown in Fig. 6.8.1.5 Set the testing machine in operation, but stop it whenthe probe has been driven through the sample specimen ortraveled a distance of 20 mm 0.79 in. This ensures that noneof the equipment will be damaged. Th
27、e probe shall have avelocity of 50.8 cm/min 20 in./min under load conditions andthis speed shall be uniform at all times.8.1.6 Record the maximum load registered by the indicatingdevice to the nearest 50 g 0.1 lb for each determination.8.1.7 Record the deflection of the sample to the nearest 5mm 0.2
28、 in. prior to puncture.8.1.8 If the sample specimen has not been penetrated, recordthe maximum load of the load cell capacity. If the force of theload cell is insufficient to penetrate the specimen, change theload cell and indicate the source of the load cell.8.1.9 Conduct a total of twelve puncture
29、 resistance mea-surements.FIG. 1 Cross-Section of Puncture Probe AF13420528.1.10 Microscopically check probes on a regular scheduleor when otherwise deemed necessary, to insure their geometryhas not changed.8.2 Test Method B, use Probe B:8.2.1 Measure the thickness of each specimen at the punc-ture
30、point (prior to puncture) to the nearest 0.01 mm or 0.001in. and record.8.2.2 Mount the material specimen to be tested in thesupport assembly as shown in Fig. 6. Take care that the holesof the specimen support assembly are aligned prior to testing toavoid damaging the probe and plates.8.2.3 Attach t
31、he material support assembly to the testapparatus.8.2.4 Position puncture probe on the compression cell of thetest apparatus, as shown in Fig. 6.8.2.5 Set the testing machine in operation, but stop it whenthe probe has been driven through the sample specimen ortraveled a distance of 20 mm 0.79 in. T
32、his ensures that noneof the equipment will be damaged. The probe shall have avelocity of 50.8 cm/min 20 in./min under load conditions andthis speed shall be uniform at all times.8.2.6 Record the maximum load registered by the indicatingdevice to the nearest 50 g 0.1 lb for each determination.8.2.7 R
33、ecord the deflection of the sample to the nearest 5mm 0.2 in. prior to puncture.8.2.8 If the sample specimen has not been penetrated, recordthe maximum load of the load cell capacity.8.2.9 Conduct a total of twelve puncture resistance mea-surements.8.2.10 Microscopically check probes on a regular sc
34、heduleor when otherwise deemed necessary, to insure their geometryhas not changed.8.3 Test Method C, use Probe C:8.3.1 Measure the thickness of each specimen at the punc-ture point (prior to puncture) to the nearest 0.01 mm or 0.001in. and record.8.3.2 Mount the material specimen to be tested in the
35、support assembly as shown in Fig. 6. Take care that the holesFIG. 2 Cross-Section of Alternate Probe BFIG. 3 Cross-Section of Alternate Probe CFIG. 4 Cross-Section of Probe and HolderF1342053of the specimen support assembly are aligned prior to testing toavoid damaging the probe and plates.8.3.3 Att
36、ach the material support assembly to the testapparatus.8.3.4 Position puncture probe on the compression cell of thetest apparatus, as shown in Fig. 6.8.3.5 Set the testing machine in operation, but stop it whenthe probe has been driven through the sample specimen ortraveled a distance of 20 mm 0.79
37、in. This ensures that noneof the equipment will be damaged. The probe shall have avelocity of 50.8 cm/min 20 in./min under load conditions andthis speed shall be uniform at all times.8.3.6 Record the maximum load registered by the indicatingdevice to the nearest 50 g 0.1 lb for each determination.8.
38、3.7 Record the deflection of the sample to the nearest 5mm 0.2 in. prior to puncture.8.3.8 If the sample specimen has not been penetrated, recordthe maximum load of the load cell capacity.8.3.9 Conduct a total of twelve puncture resistance mea-surements.8.3.10 Microscopically check probes on a regul
39、ar scheduleor when otherwise deemed necessary, to insure their geometryhas not changed.9. Report9.1 Report the following information:9.1.1 Report the test method used.9.1.2 Report the probe used.9.1.3 Describe the type of material tested.9.1.4 Record the thickness of each specimen at the puncturepoi
40、nt (prior to puncture) to the nearest 0.01 mm or 0.001 in.Calculate and report the average thickness.9.1.5 Report the load required for each puncture to thenearest 50 g 0.1 lb in all twelve test replicates. Calculate andreport the average puncture load. Include copies of stress-straincurves with lab
41、eling.9.1.6 Report the deflection that occurs for each puncture tothe nearest 5 mm 0.2 in. in all twelve test replicates. Calculateand report the average puncture deflection.10. Precision and Bias10.1 PrecisionThe precision of this test method is beingdetermined.10.2 BiasSince there is no accepted r
42、eference materialsuitable for determining the bias for the procedure in this testmethod for measuring puncture resistance of protective cloth-ing materials, bias has not been determined.11. Keywords11.1 protective clothing materials; puncture; punctureresistanceFIG. 5 Specimen Plate (Two Required)F1
43、342054ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such right
44、s, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional s
45、tandardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM C
46、ommittee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).FIG. 6 Side View of Specimen Support AssemblyF1342055
