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Accomplishments – Mechanical Strength Characterization of Adhesive Joints

  • The wedge-peel method uses an instrumented load frame to pull a standard wedge (IS011343) through the adhesive bond. This creates a high-resolution strength map (shown at right).

  • The load frame versus displacement curve was compared with NDE inspection data.

  • Simple adhesive strength laws based on bond width and thickness are adequate for predicting the wedge peel strength if the bond strength varies over multi-centimeter length scales.

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