Elasticity / Resistance Deformation Testers
Elasticity and resistance to deformation are part of the key physical properties required in the coatings industry today. Essentially there are three different test methods which are used to determine a coating’s performance under different deformation conditions.
A coated metal sheet is bent over a cylindrical or conical mandrel and the coating observed for cracks and discolouration.
A coated metal sheet is placed beneath a falling weight and the resultant damage caused by the deformation is observed. The impact test method is used to identify how the coating performs under a rapid deformation process
A coated metal sheet is subjected to a gradual deformation by a polished die. This deformation is caused by the die being pushed from beneath the coating – ie from the reverse side of the sheet. The end point is when the coating begins to crack.