ASTM D1144-99 (R2021) pdf free download.Standard Practice for Determining Strength Development of Adhesive Bonds.
1.1 This practice covers the determination of the strength development of adhesive bonds when tested on a standard specimen under specified conditions of preparation and testing. It is applicable to adhesives in liquid or paste form that require curing at specified conditions of time and temperature or specific substrate preparation. It is intended primarily to he used with metal-to-metal adherends; however, plastics. woods, glass, or combinations of these may he substituted.
1 .2 The values stated in SI units are to he regarded as the standard. The values given in parentheses arc for information only.
3. Terminology
3.1 Definitions—Several terms in this practice are delined in accordance with Terminology D907.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 activator,accelerator (surface), n—an adhesive curing agent that is applied to a bonding surface for the purpose of affecting or speeding, or both, the cure of an adhesive.
3.2.2 fixture time (set time), n—the shortest time required by an adhesive to develop handling strength such that test specimens can he removed from fixtures, unclamped. or handled without stressing the bond, thereby affecting bond strength.
3.2.3 handling strength, n—a low level of strength initially obtained by an adhesive that allows specimens to be handled, moved, or unclampcd without causing disruption of the curing process or affecting bond strength.
4. Significance and Use
4.1 This practice contains suggested provisions for reporting strength values. Any ASTM test method for determining strength properties of adhesive bonds may be used. This practice is not intended to determine the pot or working life of Iwo-component epoxy of similar type adhesives. Refer to Practice D 1338. It should be noted that there are adhesives whose testing requires special techniques and whose properties are dillicult to reproduce from tester to tester. These variables should be kept in mind when analyzing the data obtained using this practice.
5. Test Specimens
5.1 It is suggested that lap-type shear specimens in accordance with Test Method D1002, be used. Other types of test specimens may be used with agreement between the nianufacturer and the purchaser.
6. Preparation of Test Specimens
6.1 Prepare test specimens in accordance with Test Method Dl(X)2, or other applicable test method. Prepare the bonding surface by a method mutually agreed upon between the manufacturer and the purchaser. Vapor phase degreasing, grit blasting, hand abrasion. or testing on oiled surfaces are some of the methods that arc available. ASTM D1144 pdf download.