ASTM B571, EN 28510, ISO 8510-1, EN 1939 Annex B, ASTM D2861, ASTM D3330, ASTM D6862 ASTM D6252
A measured forced is applied to a test specimen in order to strip a layer from the specimen with tearing at the bonded surfaces. The significance value is the adhesion strength, that is the maximum force divided by the width of specimen.
We recommend a 90° peel fixture that holds and moves the substrate as the rubber strip is peeled off by an upper grip. Pneumatic side-action grips provide appropriate solution due to ease of use, productivity and repeatability. The 90° peel fixture is able to keep this angle by using a low force sliding table that can be adjusted during test.
The fixture is constituted by a bearing mounted table connected with the test system by a cable and a pulley and fixed on the rear by a spring. While the crosshead is driven in the tensile direction, the cable pulls the table to maintain a constant 90° peel angle and the spring keeps the table from reacting to inertia caused by load peaks and troughs.
Data acquisition is a key factor in obtaining accurate test results. Our Graphwork software calculates the adhesion value and allows the operator to register the observed failure type.