1、Designation:D181470(Reapproved 2015)Standard Test Method forMeasuring Thickness of Leather Units1This standard is issued under the fixed designation D1814;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A nu
2、mber in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers the measurement of the thick-nes
3、s of units of all types of leather.It is not suitable formeasuring the thickness of test specimens.1.2 The thickness of leather units may be reported inmillimetres,ounces,or irons.Ounces are generally used whenreferring to the thickness of shoe upper leather.Irons aregenerally used when referring to
4、 the thickness of sole leather.(One ounce equals164in.or 0.0156 in.or 0.396 mm.One ironequals148in.or 0.0208 in.or 0.53 mm.)1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for informatio
5、n onlyand are not considered standard.1.4 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 limit
6、ations prior to use.2.Referenced Documents2.1 ASTM Standards:2D1813 Test Method for Measuring Thickness of LeatherTest Specimens3.Terminology3.1 Definitions:3.1.1 unita piece of leather in the form in which it ispurchased,such as a single hide,skin,or part thereof;or asingle fabricated-leather artic
7、le in the form in which it ispurchased,such as a counter,a pair of shoes,a gasket,etc.4.Significance and Use4.1 This test method is designed for the routine measure-ment of the thickness of leather units as a means of productioncontrol and determining conformance to specifications.Itutilizes a secon
8、dary type of gage that is capable of rapidmeasurement.5.Specimen5.1 The specimen for measurement shall be the full unit.6.Apparatus6.1 Gage,Spring-Type,graduated in 0.1 mm or 0.5 oz,having a flat presser foot 0.4 6 0.025 in.(10.2 6 0.6 mm)indiameter and a flat anvil 0.4 6 0.025 in.(10.2 6 0.6 mm)ind
9、iameter.The spring shall exert a force of 1 lbf(4.45 N)on thefoot when the gage reads 2 oz,and 2 lbf(8.9 N)when the gagereads 12 oz.6.2 Gage,Standard Wedge-Type,having the two legs gradu-ated alternatively from 1 to 14 and from 112to 1312iron,enclosing an angle of about 4 and 0.425 6 0.005 mm thick,
10、preferably made from stainless steel.7.Procedure7.1 Leather Other than Sole LeatherPlace the portion ofthe specimen to be measured between the anvil and presser footof the spring-type gage(6.1)in such a manner that thespecimen is in contact with the whole area of the anvil.Withthe specimen held in t
11、his position,compress the thumb lever ofthe gage so that the gage reads approximately 15 oz.Allow thethumb to slide off the lever so that the gage presser foot snapsonto the leather.Read the thickness to the nearest 0.1 mm orestimate it to the nearest14oz.Measure the thickness at notless than five a
12、pproximately equally spaced places along andapproximately 6 in.(150 mm)from the backbone.Space themeasurements from an initial point of measurement approxi-mately 5 in.(130 mm)in from the root of the tail and the finalplace of measurement,which shall extend no farther than 130mm into the neck area.N
13、OTE1If the dimensions of the specimens are such that the gage willnot reach from the edge to the point at which the thickness is desired,thespecimen may be folded upon itself with the flesh inside.Measure the1This test method is under the jurisdiction of ASTM Committee D31 on Leatherand is the direc
14、t responsibility of Subcommittee D31.07 on Physical Properties.Thistest method was developed in cooperation with the American Leather ChemistsAssn.(Standard Method E31963).Current edition approved May 1,2015.Published July 2015.Originally approvedin 1960.Last previous edition approved in 2010 as D18
15、1470(2010).DOI:10.1520/D1814-70R15.2For referenced ASTM standards,visit 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.Copyright ASTM International,10
16、0 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 thickness of the folded specimen,and take one half of this value as thethickness.7.2 Sole LeathersInsert the cut edge of the specimenbetween the legs of a standard wedge-type gage(6.2)so thatthe plane of the leather is perpendicular to the plane of the gageand bisects the angle formed by the legs.Push the gage overthe edge of the leather to make firm contact with the leather sothat the gage will stay in position when
