1、Designation: D 897 01e1Standard Test Method forTensile Properties of Adhesive Bonds1This standard is issued under the fixed designation D 897; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in p
2、arentheses 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.e1NOTEAn editorial correction was made in 8.2 in July 2006.INTRODUCTIONThe a
3、ccuracy of the results of strength tests of adhesive bonds will depend on the conditions underwhich the bonding process is carried out. Unless otherwise agreed upon by the manufacturer and thepurchaser, the bonding conditions shall be prescribed by the manufacturer of the adhesive. In order toensure
4、 that complete information is available to the individual conducting the tests, the manufacturerof the adhesive shall furnish numerical values and other specific information for each of the followingvariables:(1) Procedure for preparation of surfaces prior to application of the adhesive, including t
5、he cleaningand drying of metal surfaces, and special surface treatments which are not specifically limited by thepertinent test method.(2) Complete mixing directions for the adhesive.(3) Conditions for application of the adhesive including the rate of spread or thickness of film,number of coats to b
6、e applied, whether to be applied to one or both surfaces, and the conditions ofdrying where more than one coat is required.(4) Assembly conditions before application of pressure, including the room temperature, length oftime, and whether open or closed assembly is to be used.(5) Curing conditions, i
7、ncluding the amount of pressure to be applied, the length of time underpressure, and the temperature of the assembly when under pressure. It should be stated whether thistemperature is that of the bond line, or of the atmosphere at which the assembly is to be maintained.(6) Conditioning procedure be
8、fore testing, unless a standard procedure is specified, including thelength of time, temperature, and relative humidity.Arange may be prescribed for any variable by the manufacturer of the adhesive if it can be assumedby the test operator that any arbitrarily chosen value within such a range or any
9、combination of suchvalues for several variables will be acceptable to both the manufacturer and the purchaser of theadhesive.1. Scope1.1 This test method covers the determination of the com-parative tensile properties of the adhesive bonds of metal tometal when tested on standard shape specimens and
10、 underdefined conditions of pretreatment, temperature, and testingmachine speed.1.2 The values stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns, if any, associated wit
11、h 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.2. Referenced Documents2.1 ASTM Standards:2B 16/B 16M Specification for Free-Cutting Brass Rod, Barand Shapes
12、for Use in Screw Machines1This test method is under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.80 on MetalBonding Adhesives.Current edition approved Oct. 10, 2001. Published December 2001. Originallypublished as D 897 49. Last previous edi
13、tion D 897 00.2For 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.1Copyright ASTM International, 100 Barr Harbor
14、Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.B 107/B 107M Specification for Magnesium-Alloy Ex-truded Bars, Rods, Profiles, Tubes, and WireB 133 Specification for Copper Rod, Bar, and Shapes3B 139/B 139M Specification for Phosphor Bronze Rod,Bar, and ShapesB 151/B 151M Specifi
15、cation for Copper-Nickel-Zinc Alloy(Nickel Silver) and Copper-Nickel Rod and BarB211 Specification for Aluminum and Aluminum-AlloyBar, Rod, and WireD 907 Terminology of AdhesivesE4 Practices for Force Verification of Testing Machines2.2 Other Documents:AISI 1020 Steel Code Tables43. Terminology3.1 M
16、any of the terms used in this test method are definedin Terminology D 907.4. Significance and Use4.1 This test method is primarily comparative. However, itdoes have application as a discriminator in determining varia-tions in adherend surface preparation parameters and adhesiveenvironmental durabili
17、ty. The test method has found applica-tions in controlling surface preparations, primer, and adhesivesystems for determining strength properties of tested systems.5. Apparatus5.1 Testing Machine, has a force measurement accuracy of61 % when calibrated in compliance with Practices E4requirements and
18、capable of maintaining a specified rate oflading and comprising essentially the following:5.1.1 Fixed MemberA fixed or essentially stationarymember, carrying one grip.5.1.2 Movable Member, carrying a second grip.5.1.3 Grips, for holding a test specimen between the fixedmember and the movable member.
19、 Use the self-aligning type.The grips shall be attached to the fixed and movable member,respectively, in such a way that they will move into alignmentas soon as any load is applied, so that the long axis of the testspecimen will coincide with the direction of the applied pullthrough the center line
20、of the grip assembly. While the designof grips of this type is optional, one that has been foundsatisfactory is shown in Fig. 1.6. Test Specimens6.1 Use specimens in accordance with Fig. 2. Reuse of thespecimens is allowed by resurfacing those surface areas thatcontained the adhesive. Do this by gri
21、nding the adhesive-facedsurface flat and parallel. Metals conforming to the followingASTM specifications are recommended:Metal DesignationBrass ASTM B 16/B 16M, C3600; half-hard temperCopper ASTM B 133, C11000; hard temperAluminum ASTM B211, A92024; G3Steel AISI 1020, G10200; cold-finished barPhosph
22、or bronze ASTM B 139/B 139M, C54400Magnesium ASTM B 107/B 107M, Alloy AZ61AF or M1A-F but seeD950Nickel silver ASTM B 151/B 151M, C77000; quarter-hard6.2 Test 10 specimens.6.3 Discard results if a specimen breaks at a flaw which isremote from the bond line unless such a flaw constitutes avariable, t
23、he effect of which is desired to study. Test a substitutespecimen to replace the discarded result.7. Adhesive7.1 Prepare areas that are to be cemented in accordance withthe recommendations of the manufacturer of the adhesive.8. Procedure8.1 Place the specimen in the grips of the testing machine;taki
24、ng care to align the specimen and the grips with an3Withdrawn.4Available from American Iron and Steel Institute (AISI), 1140 ConnecticutAve., Suite 705, Washington, DC 20036.Corrosion Preventive Finishin. mm116 1.5316 4.750.3125 7.93751932 15.134 193132 24.6125118 281716 3611516 43.3234 70FIG. 1 Tes
25、t Grips (Cold-Rolled Steel)D89701e12imaginary line joining the points of attachment of the grips tothe machine. Start test loading of the specimen as quickly aspossible.8.2 Speed of Testing For all materials apply a load to thespecimen of 544.3 to 635 kg (1200 to 1400 lb)/min, or adjustthe crosshead
26、 speed of the testing machine so that the load canbe accurately determined, but not to exceed 1.3 mm/min (0.05in./min) when the machine is running idle.8.3 RecordRecord the maximum load carried by thespecimen at failure and also the following:8.3.1 The percentage of cohesion, adhesion, and contactfa
27、ilures (Note 1). This will be based on a visual inspection.NOTE 1Cohesive failure may be obtained by observing how much ofthe failure has occurred in the adhesive itself. That is, if the cement hasadhered to the metal test pieces and no voids are visual, it represents a 100percent cohesive failure.
28、Adhesion failure refers to the lack of adhering tometals being fastened. Contact failure refers to lack of glue lines being incontact due to uneven surfaces, poor pressure distribution, etc.9. Calculations9.1 Tensile strength of the specimens is the breaking load.Express the result in grams per squa
29、re millimetre (pounds persquare inch) and if possible report to three significant figures.9.2 For each series of tests calculate the arithmetic mean ofall the values obtained and report as the “average value.”10. Report10.1 Report the following information:10.1.1 Complete identification of the mater
30、ial tested, includ-ing types, source, manufacturers code numbers, form, etc.10.1.2 Method of preparing test specimens,10.1.3 Average thickness of adhesive layer after formationof the joint, within 0.025 mm (0.001 in.). Describe the methodof obtaining the thickness of the adhesive layer includingproc
31、edure, location of measurements, and range of measure-ments.10.1.4 Testing room conditions,10.1.5 Number of specimens tested,10.1.6 Speed of testing, and10.1.7 Average value of the tensile strength, with an averagevalue of the percentage of cohesion failure for the specimens.11. Precision and Bias11
32、.1 Precision and bias for this test method is being devel-oped and will be available by September 2004.12. Keywords12.1 adhesive bond; tensile buttons; tensile strengthASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin t
33、his standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must
34、be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of there
35、sponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700,
36、West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).Metal SpecimenNOTE 1Surfaces of metal specimens shall be ground flat and parallel.It is preferable to grind all metal specimens at the same time.in.mmin.m14 6.4 1.129 6 0.005 28.68 6 0.1358 15.9 178 47.6FIG. 2 Test SpecimenD89701e13
