Establishing K 1c from eccentrically fatigue cracked small circumferentially grooved cylindrical specimens
| Autor: | R. N. Ibrahim, H. L. Stark |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Materials science
Fissure business.industry Tension (physics) Computational Mechanics Fatigue testing Structural engineering Bending Finite element method medicine.anatomical_structure Mechanics of Materials Modeling and Simulation medicine business Compact tension specimen Groove (music) Stress intensity factor |
| Zdroj: | International Journal of Fracture. 44:179-188 |
| ISSN: | 1573-2673 0376-9429 |
| Popis: | The authors have earlier proposed a practical method of using a small cylindrical circumferentially notched and fatigue cracked specimen to measure K 1c. This specimen has a machined “Vee” groove, from the root of which, is grown a fatigue crack using rotating bending. This specimen is then broken in tension and K 1c thus established. In practice however a significant proportion of the final ligaments after fatigue cracking are eccentric and some are non-circular. Finite element analysis has been carried out on a spectrum of final ligament sizes and eccentricities, leading to a relationship for determining K 1c from such eccentrically cracked specimens. The results using this relationship are compared with experimental data. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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