ASTM D2344
Test Specimens
* Speed of Testing: Edge shall be parallel and cuts made along radial planes of the ring.
< Horizontal Shear Test Specimen (Ring Specimen) >
< Shear Test Specimen(Flat Laminate) >
Table 1. Recommended Ratio of Span and Specimen Length to Thickness
| Reinforcements | Span Thickness | Length/Thickness |
|---|---|---|
| Glass fibers | 5 | 7 |
| Graphite fibers | 4 | 6 |
| Carbon fiber | 4 | 6 |
| Steel Wire | 4 | 6 |
| Boron filaments | 4 | 6 |
| High modulus organic strands (aramid, etc.) | 4 | 6 |
- Span length equals specimen length for ring specimen
- Total length for flat specimens
* Speed of Testing : 1.3 mm(0.05 in)/min
Calculation
* Shear strength
