Drum peel test on aluminum composite panel ASTM D1781

This test method covers the determination of the peel resistance of adhesive bonds between: a sandwich of two layers of aluminum and polyethylene. The goal is to measure the average torque required to peel the two material.

How it wroks:
The fixture consists of a drum assembly, flexible loading straps mounted at the bottom of the stand, an upper self closing clamp to grip the specimen and a drum clamp to hold the outer skin against the face of the drum.
During a test the loading straps pull on the drum assembly, forcing it to rotate and climb along the length of the aluminum panel. This motion peels the outer skin away from the core structure. The peel force is monitored by the load measurement system providing a measure of bond strength.