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Gardner Impact - ASTM D3029
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 |