Designation:F1342–91(Reapproved1996)e2
Standard Test Method for
Protective Clothing Material Resistance to Puncture1
This standard is issued under thefixed designation F1342;the number immediately following the designation indicates the year of original adoption or,in the ca of revision,the year of last revision.A number in parenthes indicates the year of last reapproval.A superscript epsilon(e)indicates an editorial change since the last revision or reapproval.
e1N OTE—Section11was added editorially in January1996.
e2Note—Reapproval date was corrected editorially in June1996.
1.Scope
1.1This test method determines the puncture resistance of a protective clothing material specimen by measuring the force required to cau a sharp-edged puncture probe to penetrate through the specimen.
1.2This standard does not purport to address all of the safety concerns,if any,associated with its u.It is the responsibility of the ur of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to u.
1.3The values stated in inch-pound units are to be regarded as the standard.The values in parenthes are for information only.
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2.Referenced Documents
last day2.1ASTM Standards:
D2582Test Method for Puncture-Propagation Tear Resis-tance of Plastic Film and Thin Sheeting2
2.2Federal Standard:
Fed.Std.No.191,Method5030.2Measurement of the Thickness of Materials3
3.Terminology
3.1Definition:
3.1.1protective clothing material—any material or combi-nation of materials ud in an item of clothing for the purpo of isolating parts of the wearer’s body from a potential hazard.
4.Summary of Test Method
产品英文4.1A material specimen is placed in a stationary support asmbly that is in turn affixed to the lower arm of a tension testing machine.
4.2A pointed puncture probe of t dimensions is mounted to the penetrometer stand and the whole asmbly is attached to the compression cell of the tension testing machine.
4.3The puncture probe is moved at a constant velocity until it punctures the material specimen.
4.4The force required to puncture the material specimen is measured by the compression cell.The elongation(or deflec-tion)of the specimen prior to puncture is also measured.The reported puncture resistance is the average of twelve test replicates,with three replicates for each of the four material specimens tested.
5.Significance and U
5.1This test method evaluates puncture resistance of pro-tective clothing materials which may include plastics or elastomericfilms,coated fabrics,flexible materials,laminates, or textile materials.
5.2This test method is not intended to measure puncture resistance of all types of punctures encountered using protec-tive clothing material.This test method involves a procedure where a puncture probe of specified dimensions is ud for puncturing specimens.
5.3This test method evaluates puncture resistance of pro-tective clothing materials,specifically for puncture forced on specimens perpendicular to material surface.There is no supporting structure under the material specimen.
5.4Evaluation of puncture resistance for snag-type puncture should be performed in accordance with Test Method D2582.
6.Apparatus
6.1Thickness Gage,suitable for measuring thickness to the nearest0.01mm(or the nearest0.001in.),as specified in Fed. Std.No.191,Method5030.2,shall be ud to determine the thickness of each protective clothing specimen tested.
6.2Testing Machine,shall meet the following criteria: 6.2.1It shall be capable of holding the specimen curely between the two clamps.
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6.2.2It shall be capable of straining the specimen with a uniform movement of the pulling clamp.
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6.2.3A calibrated dial,scale,or chart shall be ud to indicate applied load and elongation.Unless otherwi speci-fied for load determination,the machine shall be adjusted or t so that the maximum load required to puncture the specimen remains on the calibrated dial or scale after the test specimen has ruptured.
1This test method is under the jurisdiction of ASTM Committee F-23on
Protective Clothing and is the direct responsibility of Subcommittee F23.20on
Physical Properties.
Current edition approved Nov.15,1991.Published January1992.smartphone手机
2Annual Book of ASTM Standards,V ol08.02.
3Available from Standardization Documents,Order Desk,Bldg.4Section D,
700Robbins Ave.,Philadelphia,PA19111-5094,Attn:NPODS.
1
Copyright©ASTM International,100Barr Harbor Drive,PO Box C700,West Conshohocken,PA19428-2959,United States.
6.2.4The error of the machine shall not exceed 2%at any reading within its loading range.
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6.2.5It shall be outfitted with a compression cell.The testing machine may be configured with the compression cell on either the lower or upper arm.
6.3Puncture Probe ,shall be fabricated to meet the require-ments shown in Fig.1.The puncture probe shall be fabricated from stainless steel with a Rockwell Hardness of 35to 40.6.4Specimen Support Asmbly ,shall consist of two flat metal specimen support plates that clamp together so the sample specimen is held tightly between them.It shall also consist of a machine interface plate that can be connected to the testing machine.
6.4.1Each plate shall have one or more 1⁄4-in.(0.6-cm)diameter holes.For efficiency in testing,three holes spaced at the points for a 60°equilateral triangle having 1-in.(2.5-cm)legs centered within the plate may be ud.Each hole shall be located 3⁄4in.(1.9cm)from the plate edge and 1in.(2.5cm)from each of the other holes,as shown in Fig.2.
6.4.2The two specimen support plates shall be connected to the testing machine using a machine interface plate.
6.5Template ,shall be ud to locate the holes for specimen mounting in the support asmbly,as shown in Fig.3.
7.Test Specimens
7.1Four test specimens,8.9cm 2(3.5in.2)each,shall be prepared.No sample conditioning is required.
8.Procedure
8.1Measure the thickness of each specimen to the nearest 0.01mm (1mil)and record.
8.2Mount the material specimen to be tested in the support asmbly as shown in Fig.4.Mark the two plates and take care that the holes are aligned prior to testing to avoid damaging the penetrometer and plates.
8.3Attach the material support asmbly to the movable arm of the test apparatus.
8.4Position puncture probe on the compression cell of the test apparatus,as shown in Fig.5.
8.5Set the testing machine in operation,but stop it when the penetrometer has been driven through the sample specimen.The penetrometer shall have a velocity of 50.8cm/min (20in./min)under load conditions and shall be uniform at all times.8.6Record the maximum force registered by the indicating device to the nearest 0.1lb (nearest 50g)for each determina-
tion.
N OTE 1—All dimensions are in inches (1in.52.54cm).
FIG.1Cross-Section of Puncture
Probe
N OTE 1—All dimensions are given in inches (1in.52.54cm).
FIG.2Support Plate (Two
Required)
N OTE 1—All dimensions are given in inches (1in.52.54cm).
FIG.3
Template
go roundFIG.4Side View of Specimen Support
Asmbly
8.7Record the deflection of the sample to the nearest 0.6cm (0.2in.)prior to puncture.
8.8If the sample specimen has not been penetrated,record a maximum force of 50lb (23kg).
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8.9After the first test is complete,reposition the penetrom-eter under each of the remaining guide holes and repeat the test until three punctures have been made in each material speci-men.
8.10Conduct a total of twelve puncture resistance measure-ments.
9.Report
9.1Report the following information:
9.1.1Describe the type of material tested including the thickness of each specimen to the nearest 0.01mm (0.001in.).Calculate and report the average thickness.
9.1.2Report the force required for each puncture to the nearest 50g (0.1lb)in all twelve test replicates.Calculate and report the average puncture force.
9.1.3Report the deflection that occurs for each puncture to the nearest 0.5cm (0.2in.)in all twelve test replicates.Calculate and report the average puncture force.
10.Precision and Bias
10.1Precision —The precision of this test method is being determined.
10.2Bias —Since there is no accepted reference material suitable for determining the bias for the procedure in this test method for measuring puncture resistance of protective cloth-ing materials,bias has not been determined.
11.Keywords
11.1protective clothing materials;puncture;puncture resistance
The American Society for Testing and Materials takes no position respecting the validity of any patent rights asrted in connection with any item mentioned in this standard.Urs of this standard are expressly advid that determination of the validity of any such patent rights,and the risk of infringement of such rights,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 and if not revid,either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standards and should be addresd to AS
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FIG.5Puncture Test
Apparatus
