Failure of Adhesive Bonds at Constant Strain Rates.
PICATINNY ARSENAL DOVER NJ
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The object of this report was to study the shear strength of a structural adhesive used in Army helicopters as a function of strain rate and failure time at several temperatures. Shear strengths of adhesive AF126 bonds to two thicknesses of aluminum were measured at constant rate of crosshead separation. Primarily cohesive failure was observed in all cases. By using relations proposed by Cherry and Holmes, the shear strength could be quantitatively related to temperature and strain rate or failure time. Of specific engineering interest would be the possibility of determining the reliability of a bonded joint for specific periods of time as a function of continuously applied stress at a given temperature.
- Adhesives, Seals and Binders
- Couplers, Fasteners and Joints