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 |