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.