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Digitale Medien

The Effect of History on Hydrogen Assisted Cracking: 1. Coupling of hydrogenation and crack growth (1997)

Toribio, J. ; Kharin, V.

Springer

International journal of fracture 88 (1997), S. 233-245

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ISSN: 1573-2673

Schlagwort(e): Hydrogen assisted cracking ; crack growth rate ; crack tip autonomy.

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract This paper analyzes the effect of process history on K-dominance condition in hydrogen assisted cracking. The performed study of stress-strain assisted diffusion reveals that hydrogenation of the fracture process zone is not a purely K-driven local autonomous phenomenon. Hydrogenation and crack growth are shown to be coupled processes, one influencing the other. Consequently, particular histories of stress intensity factor K and crack size evolutions affect crack growth rate ν that can occur at the same instantaneous K-value in a given material. Thus the crack growth kinetics curve ν=ν(K) is not unique as an intrinsic material property must be.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1007442623667

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