ASTM_D_3165_-_07_2014.pdf

Designation:D316507(Reapproved 2014)Standard Test Method forStrength Properties of Adhesives in Shear by TensionLoading of Single-Lap-Joint Laminated Assemblies1This standard is issued under the fixed designation D3165;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.1.Scope1.1 This test method(Note 1)is intended for determiningthe comparative shear strengths of adhesives in large areajoints when tested on a standard single-lap-joint specimen andunder specified conditions of preparation and testing.Adhe-sives respond differently in small versus large area joints(Note2).NOTE1While this test method is intended for use in metal-to-metalapplications,it may be used for measuring the shear properties ofadhesives using plastic adherends,provided consideration is given to thethickness and rigidity of the plastic adherends.Doublers or bonded tabsmay be required for plastic adherends to prevent bearing failure in theadherends.NOTE2This variation can be influenced by adhesive density,flowcharacteristics,cure rate,gel time,carrier composition,entrappedvolatiles,volatiles released during cure,etc.and also by cure cyclevariables including:temperature,time,pressure,rise rate to temperature,cool-down rate,etc.In addition to the processing variables joint sizechanges the level of constraint on the adhesive as well as the influence ofinduced tensile loads at the edge of the joint during mechanical or thermalloading.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:2A167 Specification for Stainless and Heat-ResistingChromium-Nickel Steel Plate,Sheet,and Strip(With-drawn 2014)3A366/A366M Specification for Commercial Steel(CS)Sheet,Carbon,(0.15 Maximum Percent)Cold-Rolled(Withdrawn 2000)3B36/B36M Specification for Brass Plate,Sheet,Strip,AndRolled BarB152/B152M Specification for Copper Sheet,Strip,Plate,and Rolled BarB209 Specification for Aluminum and Aluminum-AlloySheet and PlateB265 Specification for Titanium and Titanium Alloy Strip,Sheet,and PlateD907 Terminology of AdhesivesD2093 Practice for Preparation of Surfaces of Plastics Priorto Adhesive BondingD2651 Guide for Preparation of Metal Surfaces forAdhesiveBondingD3933 Guide for Preparation of Aluminum Surfaces forStructural Adhesives Bonding(Phosphoric Acid Anodiz-ing)D4896 Guide for Use of Adhesive-Bonded Single Lap-JointSpecimen Test ResultsE4 Practices for Force Verification of Testing Machines3.Terminology3.1 DefinitionsMany terms in this test method are definedin Terminology D907.4.Significance and Use4.1 This test method is useful in that the joint configurationclosely simulates the actual joint configuration of many bondedassemblies.Surface preparation of the adherends can affect theapparent shear strength of the adhesive and can be one of thevariables under study.4.2 This test method is also useful as an in-process qualitycontrol test for laminated assemblies.In practice the laminatedassembly is either made over size and test specimens removedfrom it or a percentage of the assemblies are destructivelytested.1This 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 March 1,2014.Published March 2014.Originallyapproved in 1973.Last previous edition approved in 2007 as D3165 07.DOI:10.1520/D3165-07R14.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.3 The misuse of strength values obtained from this testmethod as design allowable stress values for structural jointscould lead to product failure,property damage,and humaninjury.The apparent shear strength of an adhesive obtainedfrom a given small single-lap specimen may differ from thatobtained from a joint made with different adherends or by adifferent bonding process.The normal variation of temperatureand moisture in the service environment causes the adherendsand the adhesive to swell and shrink.The adherends andadhesive are likely to have different thermal and moisturecoefficients of expa