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Computational and Informational Technologies for Science, Engineering and Education

Ust–Kamenogorsk, Kazakhstan, September, 8–12, 2003

Abstracts


Kinetic aspects of crack growth in deformed metall affected by hydrogen

Arkhangelskaya E.A., Lepov V.V.

Institute of physico-technical problems of the North SB RAS (Yakutsk)

The present work provides the description of crack growth kinetics induced hydrogen embrittlement in metals. The experiments showed that the fracture process was associated with mechanism of nucleation, development and coalescence various structural microdefects in the damage zone. For the description of the given kinetic process it is possible to use the damage conception advanced by Kachanov and Rabotnov. To model this situation we consider scalar damage parameter, which kinetic equation is dependent the effective stress and local hydrogen concentration. The results of connected model calculations in two-dimensional problem definition are shown a good fit with the experiment data.

Note. Abstracts are published in author's edition



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