Abstract

The use of the impact glue, Eastman 910, produced stronger bonds than could be achieved with epoxy resin adhesives. Epoxy resin layers bonded on to flat polished Dural surfaces were torn by fatigue cracks in the metal without extensive bond failure. The bond strength was improved by controlled etching and hot soaking of the Dural surface (as shown by Fessler and Haines in 1958) before bonding. Impact glue bonds between epoxy resin layers and flat polished alloy steel surfaces withstood static strains of 0.3% (slightly beyond yielding) in pure tension and 2.5% in eccentric tension.

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