Determination Of Interface Strength Of Polymer-polymer Joints
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
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