Determining how to test the bond strength between an adhesive and metal involves a three step process. The first step is to determine the bond that is to be tested and the temperature at which it will be tested. Is the bond between an adhesive coating and metal surface or is it an adhesive bond between two metal samples? Is the bond to be tested at elevated temperatures or is it to be tested below subzero temperatures? This will help to determine which machine to use and its accessories. The next step is to determine which type of test to perform. This will aid in the selection of the testing fixtures as each type of test will require a fixture that will allow the sample to be properly orientated so that the bond experiences the specific stress designated by the test. Is the bond between an adhesive coating and metal surface? If so, it will most likely be either a peel test or a pull-off test. Is the bond between two metal surfaces? Then the test will range from a tensile test to a shear test to a flexural test or any combination of those and will depend upon which way the adhesive is stressed during the test. The final step is to determine the shape of the metal to which the adhesive has been applied. Is the shape of the metal a rod or bar or is it a metal joint between to metal beams or is it in a different shape? This will also help to determine which testing fixture to use during the test as certain shapes will require unique fixtures to hold them.
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- Bond Strength Testing between an Adhesive and Metal