1、Designation:D209914Standard Test Method forDynamic Water Resistance of Shoe Upper Leather by theMaeser Water Penetration Tester1This standard is issued under the fixed designation D2099;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision
2、,the year of last revision.A number 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 t
3、he determination of the dy-namic water resistance of shoe upper leather by the Maeserwater penetration tester.It is applicable to all types of shoeupper leather.Certain waterproof processes can cause contami-nation of the stainless steel balls.When this happens,visualinspection is recommended.This t
4、est method does not apply towet blue.1.2 Initial water penetration and water absorption can bemeasured by this test method.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 information
5、 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 limita
6、tions prior to use.2.Referenced Documents2.1 ASTM Standards:2D1610 Practice for Conditioning Leather and Leather Prod-ucts for TestingD2098 Test Method for Dynamic Water Resistance of ShoeUpper Leather by the Dow Corning Leather TesterD2813 Practice for Sampling Leather for Physical andChemical Test
7、s3.Significance and Use3.1 This test method is intended to estimate the waterresistance of shoe upper leather.The flex imparted to theleather is similar to the flex given the vamp of the shoe inactual wear.NOTE1There is an indication that this test method cannot be usedinterchangeably for specificat
8、ion purposes with Test Method D2098.4.Apparatus4.1 Balance,sensitive to 0.01 g.4.2 Maeser Water Penetration Tester,as shown in Fig.1,orits equivalent.The essential features of the machine are:4.2.1 Specimen Holder,made of two V-shaped clamps withwedges for holding the specimen.The clamps shall be 2.
9、5 60.1 in.(63.5 6 2.5 mm)apart,inside measurement,when theirtops are in the same horizontal plane.One clamp shall be in afixed position.The other clamp shall be pivoted as shown inFig.1 and attached,through a connecting link,to a motor-driven eccentric which turns at 90 6 5 r/min.In one rotation oft
10、he eccentric,the center of the top of the movable clamp shallmove a distance of 1 6 0.05 in.(25.4 6 1.3 mm)below thehorizontal and return.4.2.2 Water Tank,made of copper,stainless steel,or othernoncorrosive material.It shall be of such a size that it can beplaced around the clamps and of such a dept
11、h that,when inposition for use,the top is 1.25 to 1.5 in.(31.7 to 38.1 mm)above the lowest point of the flexed clamp.4.3 Base for the Water Tank,which is removable frombetween the machine frame and the water tank.4.4 Two systems can be used to determine the number ofcycles through which the specimen
12、 is flexed.One shall be amechanical reset counter connected to the movable clamp.Theother system shall be electrical and consist of a high andcommon electrode.The recommended resistance across thecommon electrodes is 50 000.When the resistance fallsbelow this value,the relay will be energized.The hi
13、ghelectrode shown is inside the leather specimen in contact with1This test method is under the jurisdiction of ASTM Committee D31 on Leatherand is the direct responsibility of Subcommittee D31.03 on Footwear.Current edition approved May 1,2014.Published June 2014.Originallyapproved in 1962.Last prev
14、ious edition approved in 2005 as D209905(2010)1.DOI:10.1520/D2099-14.2For 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 websi
15、te.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the steel balls.The common electrode is in a salt solutionwhich is in continuous contact with the specimen duringflexing.4.5 Initial water penetration is detected by a current leakagefrom
16、 the high electrode through the specimen to the commonelectrode in the conducting solution.This causes a thyatrontube to fire,opening the relay and stopping the machine.5.Reagents and Materials5.1 Magnet,to facilitate removal of stainless steel balls.FIG.1 Maeser Water Penetration TesterFIG.1 Maeser Water Penetration Tester(continued)D2099 142 5.2 Magnetic Balls,stainless steel,18in.(3 mm optional)indiameter,400 series.The steel balls shall be clean and free ofgrease,oil,silicone,or rust,and hav