fatigue plastic zone
TRANSCRIPT
![Page 1: Fatigue Plastic Zone](https://reader034.vdocuments.mx/reader034/viewer/2022051400/55295e22550346752e8b475b/html5/thumbnails/1.jpg)
Plastic zone ahead of Fatigue Crack tip
![Page 2: Fatigue Plastic Zone](https://reader034.vdocuments.mx/reader034/viewer/2022051400/55295e22550346752e8b475b/html5/thumbnails/2.jpg)
Monotonic and reversed plastic zone development at tip of advancing fatigue crack
![Page 3: Fatigue Plastic Zone](https://reader034.vdocuments.mx/reader034/viewer/2022051400/55295e22550346752e8b475b/html5/thumbnails/3.jpg)
• Hahn et al. measured the reversed plastic zone dimension as
• Paris showed that the size of this smaller plastic zone was
• Plastic zone size is estimated by substituting hk for K and 2σys for σys in normal plastic zone size formula.
Plastic zone size
2
033.0
ys
cy
Kr
2
8
1
ys
ky
hr
![Page 4: Fatigue Plastic Zone](https://reader034.vdocuments.mx/reader034/viewer/2022051400/55295e22550346752e8b475b/html5/thumbnails/4.jpg)
Cyclic strain softening
![Page 5: Fatigue Plastic Zone](https://reader034.vdocuments.mx/reader034/viewer/2022051400/55295e22550346752e8b475b/html5/thumbnails/5.jpg)
Cyclic strain hardening