Abstract
Cold rolled steel panels, coated with automobile paint were impact tested by shooting a 2 g granite projectile at the panels at velocities from 47 to 78 m s −1. The temperature rise in the coating, due to impact, was measured using an array of high speed infrared detectors. The peak measured temperature increases were as high as 200°C, high enough to put the coating past its glass transition temperature, resulting in drastic changes to the coating mechanical properties and hence its resistance to damage.
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