Author(s)

B. Lauke, T. Schiiller & K. Schneider

Abstract

Determination of interface strength of polymerpolymer joints B. Lauke, T. Schiiller & K. Schneider Institut fur Polymerforschung Dresden e. V., Germany Abstract The determination of adhesion strength between compact materials is still an unsolved problem. Two new experimental methods for the determination of adhesion strength between two different materials are proposed that overcome these drawbacks. In the first test (curved interface tensile test) a curved interface and a special arrangement of materials is used for the tensile test of bimaterial specimens to avoid singular stress fields around corners and edges. Assuming that normal stresses are responsible for debonding at the interface the adhesion strength can be determined from critical loads at debonding initiation. In another bimaterial test (curved bimaterial test) the interface is arranged parallel to the applied load while being under transverse tensile stress in the notched cross section. The stress field is uniform in the region o

Keywords