General Motors GMW15919

Why is this test used?

General Motors GMW15919 Thermal Shock Test for Paint Adhesion is a method used to simulate conditions that a vehicle would encounter when it is washed on a cold winter day.  This method evaluates the resistance of a coating on steel, aluminum, plastic or other substrates to loss of adhesion from spraying with wet steam.

Equipment Required

This test utilizes a specially designed steam generator capable of providing a consistent flow rate, temperature, and pressure as specified in the test standard.  Nozzle size, and distance from the test specimen is also specified.  Assured Testing Services has a fully automated steam generation chamber that provides consistent, safe high pressure steam testing.

How is the test performed?

To perform General Motors Thermal Shock Test for Paint Adhesion, samples are prepared with an X-scribe, and then pre-conditioned with an immersion and freezer step.  Once the samples have been pre-conditioned as specified in the standard, they are subjected to a steam blast directed at the scribe.  After exposure, the scribe is evaluated for adhesive performance is rated and any other visual changes are noted.

See the other steam and pressure washing testing performed by Assured Testing Services here.