Abstract
In order to know the plastic deformation behaviour at fatigue crack tips, a new electrochemical method combined with a source wave analysis has been developed. This method provides dynamic measurements of the fresh bare surface creation which occurs at a crack tip. This is achieved by deconvolution calculations of the repassivation current at the fresh surfaces. The fresh surface creation rate increases non-linearly when the stress intensity factor increases linearly. It has also been found that load ratio does not affect the crack tip plastic deformation behaviour.
| Original language | English |
|---|---|
| Pages (from-to) | 237-241 |
| Number of pages | 5 |
| Journal | International Journal of Fatigue |
| Volume | 19 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1997 Mar |
| Externally published | Yes |
Keywords
- Fatigue crack
- Fresh surface
- Plastic deformation
ASJC Scopus subject areas
- Modelling and Simulation
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering