Testing Products for ASTM D695
APP-D695Determines the mechanical properties of unreinforced and reinforced rigid plastics when loaded in compression at relatively low uniform rates of straining. It is critical for calculating compressive yield stress, compressive strength, and modulus. 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.
The Buckling Risk: If the specimen is too slender, it will bend instead of compress.
Lube your platens! A thin coat of PTFE spray reduces friction and prevents barreling.
Regulatory & Test Details
| App Id | APP-D695 |
|---|---|
| App Standard | ASTM D695 |
| Standard Organization | ASTM |
| Test Type | Compression |
| Material Type | Composite |
| Specimen Type | Flat |
| Industry Type | Aerospace, Packaging |
| Min Force Kn | 5 |
| Max Force Kn | 50 |
| Max Spd Mm/m | 1.3 |
| Expert Spd | Prevents impact energy absorption. For rigid plastics, this rate ensures that the recorded peak is a material property, not a result of machine momentum. |
| Pointer App Software | N-ASTM-D695 |
| Pointer Fixture Family | G-ASTM-D695 |
| Pointer Strain Family | E-ASTM-D695 |
Implementation Commentary
Friction at the platen interface creates a triaxial stress state that artificially inflates strength.
Common Pitfalls
Misalignment of the spherically seated bearing block.