ASTM_D_1682_-_64_1975e1_scan.pdf

ASTM DLb82 b1i 900927b 0023711 897/r-3i4-X Designation:D 1682-64(Reapproved 1975)An American National Stanaara AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race SI.Philadelphia.Pa.19103 Reprinted from the Annual Book of ASTM Standards,Copyright ASTM If not listed in the current combined index,will appear in the next edition.Standard Test Methods for BREAKING LOAD AND ELONGATION OF TEXTILE FABRICS This standard is issued under the fixed designaiion D 1682:the numher immediatel)follouing the designation iiidicatts the)ear of original adoption or.in the case of revision.the year of las!revision.A numher in parentheses indicates the)ear of last reapprcnal.A supersnip epsilon(t)indicates an editorial change since the last revision or reapproal.NOTE-SectiOn I.2 was added editonallv and Notes i ihrcueh 20 renumhired in August 1986.-.-.-.-_.-.-1.scope I.I These test methods cover procedures for determining the breaking load and elongation of textile fabrics using the Grab.Ravelled Strip.and Cut Strip methods.presented in two sections as follows:I.I.I Purr I describes aspects of the procedure which are common to a11 three methods.1.1.2 Purr II describes those details of proce-dure especially applicable to the niethod under discussion.1.2 The values stated in inch-pound units are to be regarded as the standard.PARr I-CLNERAI.2.Applicable Documents 2.I:ISTM Stunriurcls:D76 Specification for Tensile Testing Ma-chines for Textiles.D 123 Terminology Relating to Textiles.D 259 Specification for Woven Tapes D 3 I5 Specification for Woven Asbestos Tape D46 I Methods of Testing Felt D579 Specification for Greige Woven Glass D580 Specification for Greige Woven Glass D629 Test Methods for Quantitative Analysis DI I17 Methods of Testing Nonwoven Fabrics Tapes and Webbings of Textiles Fabrics 3.Definitions 3.I grub test-in juhric resing,a tension test in which only a part of the width of the specimen is gripped in the clamps.For example.if the specimen width is 4 in.(100 mm)and the width of the jaw faces I in.(II mm).the specimen is gripped centrally in the clamps.3.2 sfrip tw-a tension test in which the full width of the specimen is gripped in the clamps.3.3 riiodI/i(d,grrih tcw-a test in which only a part of the width of the specimen is gripped in the clamps and in which lateral slits are made in the specimen to sever all yarns bordering the portion whose strength is to be tested.reducing to a practical minimum the fabric assistance inherent in the grab method.3.4 ruwkd strip tiw-a stnp test in which the specified specimen width is secured by raveling away yarns.3.5(i11 sfrip tcst-a strip test in which U m e specimen width is secured by cutting the fabric.3.6(r)ii.sfuiit-rtrti-c!lc,.-ctisioii tiw.si/c cwieg rnudiiric(Rii)-a testing machine in which the rate o.increase of specimen length is uniform with time.3.7 tnn.tunt-rut-c?f:truir.tmsilc tiwinI:rnoliint(CRT)-a testing machine in which the pulling clamp moves at a uniform rate and the load is applied through the other clamp which moves appreciably to actuate a weighing mech-anism.so that the rate of increase of load or These test methods are under the jurisdiction of 4STM Committee D-I3 on Textiles.and are the direct responsibility Fuhcommittee D13.59 on Fahric Test Methods.General.Current edition approved Aug.31.1964.Puhlished October 1964.Onginally published as D 1682-59 T.replacing in part D 39-59.Last previous edition D 1681-59 T.4nnuul B d !/.4ST.M Slandards.Vol 07.0 I.4nnrd Bl where:E=precision.and II=actual number of tests Nori:8-11 is desirahle to prcparc two or three extra speeimcns which nia he required to estahlish the proper time when dzaling with unfamiliar materials.using the constant-time-to-brealr technique.8.Conditioning 8.1 Precondition the specimens by bringing them to approximate moisture equilibrium in the standard atmosphere for preconditioning.then bring the specimens to moisture equilibrium for testing in the standard atmosphere for testing.Equilibrium is considered to have been reached when the increase in weight of the specimen in successive weighings made at intervals of not less than 2 h does not exceed O.1%of the weight of the specimen.Nori.9-11 is recognized that in practice teaile materials are frequently not weighed todetermine when moisture equilibrium has been reached.While such a procedure cannot be accepted in cases of dispute.it may be sufficient in routine testing to expose the ma-terial to the standard atmosphere for testing for a rea-sonable period of time before the specimens are tested.As a guide.the following conditioning periods are sug-gested:Minimum Conditioning Fiher Period.h*Animal fiben(forexample.wool)and regen-U Vegetahie fibers(for example.coiion)6 viscose 8 erated proteins 3 Minimum Conditioning Fiber Period,h*Acetate 4 2 Fibers having a regain less than 5 76 at 65 76 relative humidity”These periods are approximate and apply only to fabrics spread out in single thickness which are exposed freely to moving air in the sta