Testing Products for ASTM D5528
APP-D5528Mode I Interlaminar Fracture Toughness (DCB) of Composites. Measures the resistance to crack propagation in laminated materials.
Application Insight:
Uses the Modified Beam Theory (MBT) for GIc calculation.
Pro Tip:
Apply a white developer spray to the specimen edge to see the crack tip clearly.
Regulatory & Test Details
| App Id | APP-D5528 |
|---|---|
| App Standard | ASTM D5528 |
| Standard Organization | ASTM |
| Test Type | Fracture Toughness |
| Material Type | Composites |
| Specimen Type | Double Cantilever Beam (DCB) |
| Industry Type | Aerospace |
| Min Force Kn | 0.05 |
| Max Force Kn | 5 |
| Max Spd Mm/m | 5 |
| Mach Recommend | TestResources 100-1000-6 | Single Column UTM | 4.4 kN 150 mm |
| Pointer App Software | N-ASTM-D5528 |
| Pointer Fixture Family | G-ASTM-D5528 |
| Pointer Strain Family | E-ASTM-D5528 |
Implementation Commentary
Critical for understanding delamination; requires constant monitoring of crack length.
Common Pitfalls
Misidentifying the initial crack tip at the insert.