Abstract
Aluminum-reinforced epoxy models are being used as precursors to prototype design in the development and modification of aircraft structures. In conjunction with experimental strain-measurement methods, these models provide extensive design information before engineering, tooling, and manufacturing expenses are incurred. Test applications, model fabrication, and experimental stressanalysis methods are discussed to illustrate the potential uses of the technique. Material characteristics such as time-modulus criteria together with the effects of model rework and transducer reinforcement are developed to acquaint the potential user with technical restraints.
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