Published: Jan 1992
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The effects of temperature/humidity exposure on the cyclic-creep behavior of metal-to-metal adhesively bonded single-overlap joints have been investigated. Three adhesives, a toughened epoxy, a vinyl/epoxy, and an epoxy/acrylic, were studied in the ambient condition and after being exposed to a temperature/humidity environment. Results show environmental exposure can increase the minimum creep rate of overlap bonded joints as much as 80%. In addition, small variances in maximum stress can significantly increase the minimum creep rate. A technique is described for extrapolating long-term cyclic creep from short duration test results.
structural adhesive, fatigue, cyclic creep, environmental effects, overlap joint, static creep, creep rate, advanced materials
Research staff, Ford Motor Company, Dearborn, MI
Paper ID: STP15348S