Abstract
Fracture experiments conducted as part of research on stable crack behavior in low alloy steel (EN 34NiCrMo6) are analyzed and presented. CT specimensof low constraint (section slenderness ratio, b0/B∼6), with various crack depth and different loading angles, φ, were investigated. Analysis of the loaddisplacement curves revealed that the initiation load is found to be the same when normalized to the maximum load, Pmax. The load-line displacement ΔLL at Pmax (Δ Pmax) was also found to have a single value. Hence the load displacement curves were presented as a unique normalized P-ΔLL curve. These normalized curves demonstrate having a single "representative/trend" curve that characterises the stable crack growth behavior. The proposednormalization technique was also applied to additional literature data on different materials with various specimen configurations and loading modeswith success. This technique could also be useful in studying the fracture of low constraint specimens and contributing to the transferability issue forstructural application.
| Original language | English |
|---|---|
| Pages (from-to) | 1-20 |
| Number of pages | 20 |
| Journal | Materials Performance and Characterization |
| Volume | 3 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Jun 18 2014 |
Keywords
- Ductile crack growth
- Low constraint specimens
- Mixed-mode fracture
- Normalized load displacement curves
- Thickness-independent load displacement curve
ASJC Scopus subject areas
- Ceramics and Composites
- Mechanics of Materials
- Polymers and Plastics
- Metals and Alloys