ASTM_F_1790_-_F_1790M_-_14.pdf

Designation:F1790/F1790M14Standard Test Method forMeasuring Cut Resistance of Materials Used in ProtectiveClothing with CPP Test Equipment1This standard is issued under the fixed designation F1790/F1790M;the number immediately following the designation indicates the yearof original 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.INTRODUCTIONCut resistance is an important property for protective clothing and equipment,and several standardtesting devices have been adopted across different industries to measure this property.A commonpractice in cut resistance testing is to subject a material specimen to a transversely moving blade underan applied load and measure the distance of blade travel required to cut through the specimen.Thistest method calculates the load required to cut through different specimens at 25.4 mm 1 in.bladetravel.This calculated load,defined as a rating load,can be used to compare the cut resistance ofmaterials.The original F1790-97 test method defined a commercially-available apparatus known as the CutProtection Performance Tester(CPP).In an attempt to harmonize F1790/F1790M with ISO 13996(another international testing standards for measuring cut resistance)and improve the test method,thescope of the test method was changed in F1790-05 to allow the use of other cut testing equipment,specifically the Tomodynamometer(TDM-100)and a modification to the CPParm called the ModifiedCPP(mCPP).The revision addressed issues related to measurement of high frictional coefficientmaterials like elastomers,specimen mounting,rating load calculation,and other procedures toharmonize with ISO 13997:1999.After further round-robin evaluation by the subcommittee,it wasdemonstrated that the revisions to the test method result in a bias between the original F1790-97 testmethod and the revised F1790-05 test method when using the CPP.F1790-05 was not widely adoptedin North America because of this bias and large amount of data and experience accumulated withF1790-97.F1790-97 continues to be the test method predominately practiced when using the CPPdevice.To reduce confusion for end-users of F1790/F1790M and to allow for differences betweentesting devices,the subcommittee has decided to limit the scope of F1790/F1790M to include only theCPP device and create a separate test method for use of the TDM-100.1.Scope1.1 This test method covers the measurement of the cutresistance of a material when mounted on a mandrel andsubjected to a cutting edge under a specified load using the CutProtection Performance(CPP)Tester.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 limitations in testing materi-als with a thickness greater than 3 mm or having a highfrictional coefficient such as elastomers.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.Combiningvalues 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 determine the applica-bility of regulatory limitations prior to use.1This test method is under the jurisdiction ofASTM Committee F23 on PersonalProtective Clothing and Equipment and is the direct responsibility of SubcommitteeF23.20 on Physical.Current edition approved Jan.1,2014.Published February 2014.Originallyapproved in 1997.Last previous edition approved in 2005 as F1790-05.DOI:10.1520/F1790_F1790M-14.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 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 TextilesF1494 Terminology Relating to Protective Clothing2.2 ISO Standards:3ISO 13996 Protective ClothingMechanical PropertiesDetermination of Resistance to PunctureISO 13997 Protective ClothingMechanical PropertiesDetermination of Resistance to Cutting by Sharp Objects2.3 ASTM Adjuncts:Cut Test Video Demonstration43.Terminology3.1 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,asindicated by electrical contact of the cutting edge and theconductive strip or substrate.3.1.3