ASTM D2207-2000(2005) Standard Test Method for Bursting Strength of Leather by the Ball Method《用球法测定皮革抗破碎强度的标准试验方法》.pdf
《ASTM D2207-2000(2005) Standard Test Method for Bursting Strength of Leather by the Ball Method《用球法测定皮革抗破碎强度的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D2207-2000(2005) Standard Test Method for Bursting Strength of Leather by the Ball Method《用球法测定皮革抗破碎强度的标准试验方法》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 2207 00 (Reapproved 2005)Standard Test Method forBursting Strength of Leather by the Ball Method1This standard is issued under the fixed designation D 2207; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、 last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This test method covers the determi
3、nation of the burst-ing strength of leather by the ball method. It may be used to testa large variety of leathers and leather products. It is particularlyapplicable to light- and medium-weight leathers, such as shoeuppers and garments. This test method does not apply to wetblue.1.2 The values stated
4、 in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.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 saf
5、ety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 1517 Terminology Relating to LeatherD 1610 Practice for Conditioning Leather and LeatherProducts for TestingD 1813 Test Method for Measuring Thickness of Leat
6、herTest SpecimensD 2209 Test Method for Tensile Strength of Leather3. Terminology3.1 For definitions of leather terms used in this standardrefer to Terminology D 1517.4. Summary of Test Method4.1 The leather specimen is mounted in the ball burst fixturewhich is attached to a testing machine, as desc
7、ribed in TestMethod D 2209. The machine is operated at a jaw separation of4 6 1 in./min. The maximum load registered is recorded. Thebursting strength in lb/in. of thickness is calculated by dividingthe bursting load by the thickness of the specimen.5. Significance and Use5.1 This test method is des
8、igned to measure the burstingstrength of leather by measuring the force required to force aspherical ended plunger through a piece of leather. Thebursting load and extension will be generally proportional tothe diameter of the plunger. This test method is suitable fordevelopment, control and service
9、 evaluation of the leather.There is good correlation between bursting strength and tensilestrength. This test method may not apply when the conditionsof the test employed differ widely from those specified in thetest method.6. Apparatus6.1 Testing Machine, as described in Test Method D 2209.NOTE 1Th
10、e machine shall have a cross-head speed of 4 6 1 in./min(1.6 6 0.4 mm/s).6.2 Thickness GageA dead-mass type of thickness gageas described in Test Method D 1813.6.3 Burst Tester,3as shown in Fig. 1. The diameter of theball or plunger shall be14 in. (0.250 in. (6.4 mm).6.4 Parts Required to Modify Bur
11、st Tester, as illustrated inFig. 2, or equivalent.6.5 Die, Knife, or Shears, for cutting the test specimen.6.6 Dial Gage, mounted on the burst tester as shown in Fig.1 to measure the height of the extension of the leatherspecimen.NOTE 2This gage shall be calibrated to read directly to the nearest0.0
12、01 in. (0.025 mm). It shall be equipped with a flat anvil and presserfoot.6.7 Autographic Recorder to record the extension to thenearest 0.1 in. (2.5 mm).1This test method is under the jurisdiction of ASTM Committee D31 on Leatherand is the direct responsibility of Subcommittee D31.07 on Physical Pr
13、operties General. This test method was developed in cooperation with the American LeatherChemists Assn. (Standard Method E 14 1965).Current edition approved April 1, 2005. Published May 2005. Originallyapproved in 1964. Last previous edition approved in 2000 as D 2207 00.2For referenced ASTM standar
14、ds, 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.3A modified Scott Model W Burst Tester has been found satisfactory for thispurpose. Avail
15、able from Precision Scientific, 3737 W. Cortland, Chicago, IL 60647.Request Ball Burst Fixture Catalog, No. 26651.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7. Test Specimen7.1 The test specimen shall be a disk of leather at lea
16、st 1.75in. (44.5 mm) in diameter.7.2 A strip of leather between 1.75 and 6 in. (44.5 and 152mm) wide may be used for a test specimen. Two tests shall berun on each strip.NOTE 3When tests are made on a strip of leather, the clamping areascan be overlapped so that tests can be made with a minimum dist
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