Patent ID: 8677813

Claim:
An apparatus to test the adhesion strength and/or cohesive strength of a coating comprises a first member having an aperture and a second member locatable in the aperture in the first member, the first and second members having surfaces, a temperature sensor arranged to measure the temperature of the first member, a first strain gauge to measure the strain in a first direction, a second strain gauge to measure the strain in a second direction perpendicular to the first direction, a device to apply a tensile load to move the second member from a first position where the second member is located in the aperture in the first member and the surfaces of the first and second members are substantially flush to a second position where the surfaces of the first and second members are not flush and a load sensor to measure the adhesive strength and/or cohesive strength of a coating deposited on the surfaces of the first and second members, means to analyse the tensile load, the temperature of the first member, the strain in the first direction, the strain in the second direction and the adhesion strength or cohesive strength of the coating to determine the relationship between the temperature and the adhesion strength and/or cohesive strength of the coating.