|
|||||
|
|
Influence of bimaterial interface on kinking behaviour of a crack growth emanating from notch |
|
| Authors: | D. Ouinas, B.B. Bouiadjra, B. Serier,J. Vi a |
| Affiliation: | aDepartment of Mechanical Engineering, University Ibn Badis of Mostaganem 27000, Algeria bDepartment of Mechanical Engineering, University of Sidi Bel Abbés 22000, Algeria cDepartment of Materials Science, University of Oviedo, 33206 Gijón, Asturias, España |
| Abstract: | The mechanism of crack deviation by an interface modifies considerably the behaviour of bimaterials fracture. Their fracture resistance is highly affected by the difference of the elastic properties of the bonded materials. In this work, the finite element method is applied to analyze the behaviour of a crack emanating from semicircular notch root growing in interface ceramic/metal composites and perpendicularly to this interface. The obtained results showed that the crack grew to interface from harder material, its energy decreased at the approach of the interface, in this case was retarded; an inverse phenomenon occurs if the crack is propagated towards a lower strength material and its energy increases, it has tendency to accelerate. The effects of geometry on the crack deflection near the interface are also discussed. |
| Keywords: | Notch Crack deviation Interfacial crack Bimaterial Stress intensity factor (SIF) Energy release rate Fracture mechanics |
| 本文献已被 ScienceDirect 等数据库收录！ | |