Designation: D2095 - 96 (Reapproved 2015) INTERNATIONAL Standard Test Method for Tensile Strength of Adhesives by Means of Bar and Rod Specimens1 This standard is issued under the fixed designation D2095; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (s) indicates an editorial change since the last revision or reapproval. 3.2 Definitions of Terms Specific to This Standard: 1. Scope 3.2.1 tensile strength of an adhesive, nthe maximum 1.1 This test method covers the determination of the relative tensile stress which it is capable of sustaining. Tensile strength tensile strength of adhesives by the use of bar- and rod-shaped is calculated from the maximum load during a tension test butt-joined specimens under defined conditions of preparation, carried to rupture and the original cross-sectional area of the conditioning, and testing. This test method is applicable to the specimen (see Terminology E6). testing of adhesives with various adherend materials in either similar or dissimilar combinations. 4. Significance and Use Nore 1—An alternative test method for determining the tensile strength 4.1 Tension tests provide reasonably accurate information of adhesives is Test Method D897. with regard to the tensile strength of adhesives. Tensile strength 1.2 The values stated in SI units are to be regarded as the data may be suitable for specification acceptance, service standard. The values given in parentheses are for information evaluation, manufacturing control, research, and development. only. Tension tests are not considered significant for applications 1.3 This standard does not purport to address all of the differing from the test in rate, direction, and type of loading. safety concerns, if any, associated with its use. It is the 5. Apparatus responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- 5.1 Testing Machine-A testing machine capable of main- bility of regulatory limitations prior to use. taining a specified rate of loading, with the error for indicated loads that are to be measured not exceeding ±1 % and the 2. Referenced Documents load-indicating mechanism essentially free of inertial lag at a 2.1 ASTM Standards:2 specified rate of loading. Verify the accuracy of the testing D897 Test Method for Tensile Properties of Adhesive Bonds machine in accordance with Practices E4. Ensure that the D907 Terminology of Adhesives testing machine is provided with the following: D2094 Practice for Preparation of Bar and Rod Specimens 5.1.1 Fixed Member-A fixed or essentially stationary for Adhesion Tests member carrying one attachment fixture. E4 Practices for Force Verification of Testing Machines 5.1.2 Movable Member-A movable member carrying a E6 Terminology Relating to Methods of Mechanical Testing second attachment fixture. E104 Practice for Maintaining Constant Relative Humidity 5.1.3 Attachment Fixtures—Self-aligning type fixtures for by Means of Aqueous Solutions holding a specimen between the fixed member and the movable member. Ensure that the fixtures are attached to the fixed and 3. Terminology movable members in such a way that they will move into 3.1 Many of the terms in this standard are defined in alignment as soon as load is applied, so that the long axis of the Terminology D907. test specimen will coincide with the direction of the applied load. A design for fixtures that has proven satisfactory is shown in Fig. 1 and Fig. 2. 1 This test method is under the jurisdiction of ASTM Committee D14 on 5.2 Conditioning Room or Desiccators-A conditioning Adhesives and is the direct responsibility of Subcommittee D14.80 on Metal Bonding Adhesives. room capable of maintaining a relative humidity of 50 ± 2 % at 23 ± 1°C (73.4 ± 1.8°F) or desiccators containing a approved in 19