ASTM F1044: Standard Test Method for Shear Testing of Calcium Phosphate Coatings and Metallic Coatings
This test method covers shear testing of continuous calcium phosphate coatings and metallic coatings adhering to dense metal substrates at ambient temperatures. It assesses the degree of adhesion of coatings to substrates, or the internal cohesion of a coating in shear, parallel to the surface plane.
Typically n=6 flat cylindrical, coated specimens are glued against a matching counterpart and load up to failure.