Singular and Coupled Stress Effects

Environmental consequences are so severe that it is usually necessary to test preproduction joints under conditions as close to those of the actual service environment as possible. The parameters that will likely affect the durability of a given joint are 

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TABLE 15.1 Relative Resistance of Epoxy Adhesives to Common Service Environments1 

Environment Epoxy + polyamine Epoxy + anhydride Epoxy + polyamide Epoxy- phenolic Epoxy- polysulfide Epoxy-nylon Phenoxy (thermoplastic) 

excellent 2, good 3, fair 4, poor 5, very poor 6, extremely poor. 

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