Verfahren und Vorrichtung zur Bestimmung der Haftfestigkeit zwischen Metallschirm und Kabelmantel bei Kabeln mit Schichtenmantel

摘要

The bond strength with which the aluminum sheath adheres to the polyethylene jacket of a cable is determined by measuring the force required to peel off the sheath from the jacket. The bond strength so measured provides an indication of the effectiveness of the bond as a moisture and vapor barrier. A simple measuring apparatus is clamped in a tensile strength testing machine to obtain a reading of the measured strength. The test piece is mounted in a rotatable collet having a split mandrel which clamps the aluminum sheath and peels it from the plastic. The torque on the mandrel is measured on the machine.