For testing the shear strength of coatings, ISO 13179-1:2014 specifies dynamic tests that reference the corresponding method in ASTM F1160-14. The coating is applied to the end faces of two cylinders, which are bonded together prior to testing.
The opposing bonded layers are vertically aligned with their contact surface in the loading axis of the testing machine to ensure pure shear loading without bending. The specimen holders are mounted on double Cardan joints to decouple constraint forces.
The ISO standard requires 10 million load cycles for a successful test.



