ASTM_D_897_-_08.pdf

Designation:D89708Standard Test Method forTensile Properties of Adhesive Bonds1This standard is issued under the fixed designation D897;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 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.INTRODUCTIONThe accuracy 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 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 the 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 be 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,including 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 before 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 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 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 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 limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B16/B16M Specification for Free-Cutting Brass Rod,Barand Shapes 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.1,2008.Published October 2008.Originallyapproved in 1949.Last previous edition approved in 2001 as D897 011.DOI:10.1520/D0897-08.2For 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,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 B107/B107M Specification for Magnesium-Alloy ExtrudedBars,Rods,Profiles,Tubes,and WireB133 Specification for Copper Rod,Bar,And Shapes(With-drawn 1994)3B139/B139M Specification for Phosphor Bronze Rod,Bar,and ShapesB151/B151M Specification for Copper-Nickel-Zinc Alloy(Nickel Silver)and Copper-Nickel Rod and BarB211 Specification for Aluminum and Aluminum-AlloyRolled or Cold Finished Bar,Rod,and WireD907 Terminology of AdhesivesE4 Practices for Force Verification of Testing Machines2.2 Other Documents:AISI 1020 Steel Code Tables43.Terminology3.1 Many of the terms used in this test method are definedin Terminology D907.4.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 durability.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 Practic