Testing Products for ASTM D2344
APP-D2344Determines the short-beam strength of high-modulus fiber-reinforced composite materials using a center-point loading flexure test. It is primarily used as a quality control tool to assess interlaminar shear performance. This configuration focuses on the Newton-Series control architecture to ensure high-fidelity data acquisition. Utilizing a 32-bit digital signal processor, the system provides a superior Signal-to-Noise Ratio (SNR), which is essential for capturing precise material transitions that lower-resolution systems often miss.
The load frame for this application has been selected to provide the most cost-effective solution capable of meeting the standard’s peak force requirements. While TestResources offers a wide range of frame geometries, this specific selection represents the optimal balance between laboratory CAPEX and technical compliance. Any frame in our catalog meeting the minimum load rating will adhere to the standard; however, this configuration is our primary recommendation for those seeking a reliable, streamlined testing platform without unnecessary complexity.=
Resin Check: This tests the interlaminar glue (matrix), not the fiber.
Keep the Span-to-Thickness ratio at exactly 4:1 to ensure shear failure.
Regulatory & Test Details
| App Id | APP-D2344 |
|---|---|
| App Standard | ASTM D2344 |
| Standard Organization | ASTM |
| Test Type | Shear (SBS) |
| Material Type | Composite |
| Specimen Type | Small Thick Bar |
| Industry Type | Marine, Space |
| Min Force Kn | 25 |
| Max Force Kn | 100 |
| Max Spd Mm/m | 1 |
| Expert Spd | Short beam shear requires extreme stability. Because the span is so short, higher speeds can lead to dynamic effects that mask the interlaminar shear failure. |
| Pointer App Software | N-ASTM-D2344 |
| Pointer Fixture Family | G-ASTM-D2344 |
| Pointer Strain Family | E-ASTM-D2344 |
Implementation Commentary
Short Beam Strength is a comparative tool for process control, not for design allowable data.
Common Pitfalls
Using a span that is too long, causing the specimen to fail in bending rather than shear.