On Kinetics of Diffusion Cracks and Delaminations
In the cracks contained in such materials as metals under the action of corrosive media, degrading polymers and ceramics (for example, HTSC-ceramics), gas-saturated rocks, etc., gas can be accumulated. For a penny-shaped crack in an unbounded elastic medium and for a thin penny-shaped delamination under the surface of a half-space, as well as for similar cracks-strips, in a new uniform way – on the basis of the energy approach and with the use of Clapeyron theorem – kinetic equations are derived describing the growth of specified defects under gas diffusion into them. The analysis of the reasons leading to identity of the equations named, allows (under some conditions) to extend the results obtained for these problems to a number of other important cases: cracks on the interface of an adhesive joint of two pliable half-spaces with different mechanical and diffusion properties (with the interface being permeable as well as impermeable), the account of anisotropy, etc. It is shown, that exactly the same reasons (and under the same restrictions) make it possible to extend to the same cases the results obtained earlier for growth laws of a penny-shaped crack in an unbounded elastic medium versus laws of gas inflow into it as well.
Kinetics Diffusion Cracks Delaminations Model
Ilya Nickolaevich Dashevskiy
A.Ishlinsky Institute for Problems in Mechanics,Russian Academy of Sciences,119526,Russia
国际会议
北京
英文
1-8
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）