Gardner Impact - ASTM D3029

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Energy required for 50% of the specimens tested to fail after being impacted by falling weight or dart (tup).

Two testing methods are used.
Method F: Free-falling dart (tup).
Method G: Guided weight falls on impactor head resting on specimen.

Method	Geometry	Striker Diameter (mm)	Support Plate Inner Diameter (mm)
F	FA	15.86	76.2
	FB	12.7	38.1
	FC	38.1	127
G	GA	15.86	76.2
	GB	15.86	31.75
	GC	15.86	16.26