Institute of Physics of Materials AS CR, v. v. i. > Projects > Crack initiation and propagation from interface-related singular stress concentrators
Crack initiation and propagation from interface-related singular stress concentrators
Investigator | doc. Ing. Jan Klusák, Ph.D. |
Number of Project | P108/10/2049 |
Agency | Grantová agentura České republiky |
Duration | 2009-12-31 - 2012-12-30 |
Anotace |
The objective of the project is the overall stability assessment of crack initiation and propagation from a bi-material notch. Three possible failure manners can occur: (i) Fracture initiation and propagation into the volume of a material part under a general direction (ii) Debonding of the interface (iii) Crack initiation and propagation into one of the materials in the direction parallel with the interface. Since the first and the second manners have been studied by us or they are available in the literature, the initiation and propagation of a crack parallel to the interface is the main topic of the project. Generally, this failure mode occurs when parameters of fracture-mechanics resistance of an interface are higher than the parameters corresponding to particular material part. Within the proposed project generalization of linear elastic and elastic-plastic fracture mechanics will be performed for mixed-mode crack initiation and propagation parallel to the interface. Finally, the overall stability criteria considering all the three potential failure manners will be suggested. |