What is impact test for powder coating?
ASTM D 2794 provides a procedure for rapidly deforming by impact a coating film and its substrate and for evaluating the effect of such a deformation. The organic coatings under test are applied to four or more suitable thin metal panels.
How do you test for powder coating?
This test is performed using a gloss meter, which shines a light onto the surface of the part at a fixed angle, then measures the amount of light reflected off it. If the measurement is out of tolerance, it may be an indication that the powder coating has not cured properly.
How do you do an impact test?
A pivoting arm is raised to a specific height (constant potential energy) and then released. The arm swings down hitting a notched sample, breaking the specimen. The energy absorbed by the sample is calculated from the height the arm swings to after hitting the sample.
What is Gardner impact test?
ASTM D5420 is a standard test method for impact resistance of flat, rigid plastic specimen by means of a striker impacted by a falling weight (gardner impact). This test consists of a fixed weight impacting a striker resting on top of a supported specimen dropped from various heights.
What is MEK test for powder coating?
This test method is used to determine the degree of cure of a baked film by the paint film resistance to a specified solvent. The Solvent Rub Test is usually performed using methyl ethyl ketone (MEK) as the solvent. The MEK resistance or degree of cure applies to paint topcoats and primers.
What is bend test in powder coating?
This test is used to evaluate the elasticity of coatings. In this test, coated plates will be bent around a conical or cylindrical metal axis. In the conical bend test, various bending diameters are continually tested but in the cylindrical bend test, various diameters are tested discontinuously.
What is the impact strength?
Definition of impact strength : the resistance of a material (as metal or ceramic ware) to fracture by a blow, expressed in terms of the amount of energy absorbed before fracture.
What is impact testing?
ImPACT (immediate post-concussion assessment and cognitive testing) is a computer-based assessment tool. It’s the most effective tool for comparing a person’s neurocognitive state before a concussion occurs.