Abstract
Structural adhesive joints may be required to withstand high loading rates. The effect of impact loading on the strength and energy absorption of single lap joints has been investigated. A rubber-toughened epoxy adhesive, in bulk form, shows significant changes in mechanical response, when tested in shear over a wide range of strain rates. Despite large changes in the response of the adhesive, the strength of lap joints is only slightly reduced by impact loading. When high strength adherend materials are used, energy absorption is relatively small; however, it is increased by using lower strength adherend materials, as significant plastic deformation can take place in the adherend prior to joint failure.
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