ASTM D2394 Section 18 Falling Ball Indentation

ASTM D2394 Section 18 Falling Ball Indentation

This test is designed for evaluating the indentation resistance of finished wood flooring.  A 2”-diameter, 1.18 lb steel ball is dropped on the flooring at 6” increments from 6” up to 72”, moving the sample to a new position after each drop.  The residual indentation is measured after each drop.  The indentation (x-value) is then plotted against the height of the respective drop (y-value) and a line is drawn between the plotted points.  The intercept of the curve at the 6-foot drop point is considered the “index of indentation resistance.”

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