Durability (Lifetime) Predictions Adhesively Bonded Structures
VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG CENTER FOR ADHESION SCIENCE
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A brief review of past and current methods for life time or durability assessment of engineering structures is given. It is noted that adhesively bonded structures exhibit all the features that compromise the durability of metals and polymers plus additional features related to the interface between the adhesive and the adherend. A discussion of current techniques on adhesives is given which includes moisture diffusion, temperature, and other effects. It is suggested that the critical issue in durability predictions for adhesion science is the development of methods of measuring the properties of the various components in an adhesive joint. A technique based upon a new beam test for adhesion is outlined together with a new digital image correlation technique for measuring strain at the micro scale. The integration of these elements into a research technique to address time-dependent properties in situ are discussed. Keywords Adhesives, Durability, Life Predictions, Life Cycle, Life Expectancy.
- Adhesives, Seals and Binders
- Couplers, Fasteners and Joints