Simulation of crack growth during hydrostatic testing of pipeline steel in near-neutral pH environment
| Autor: | Yongwang Kang, Weixing Chen, Richard Kania, R. G. Worthingham, Gregory Van Boven |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Materials science
Hydrogen General Chemical Engineering Metallurgy chemistry.chemical_element General Chemistry Crack growth resistance curve Corrosion law.invention Crack closure Hydrostatic test Creep chemistry law mental disorders General Materials Science Hydrostatic equilibrium Composite material Stress intensity factor |
| Zdroj: | Corrosion Science. 53:968-975 |
| ISSN: | 0010-938X |
| DOI: | 10.1016/j.corsci.2010.11.029 |
| Popis: | The objective of this investigation was to understand the role of crack dimension, hydrogen, room-temperature creep and loading procedure on crack growth during hydrostatic testing of pipeline steels in near-neutral pH aqueous soil environments. Crack growth was found during hydrotesting, but was not linearly related to the stress intensity factor at the crack tip. Crack growth is mainly driven through the internal-hydrogen-assisted-cracking mechanism, instead of the hydrogen-environmental-assisted-cracking mechanism. Excessive plastic deformation induced by room-temperature creep prior to hydrotesting reduces crack advance during hydrotesting. Lower loading rate generally induces larger crack growth by hydrostatic loading. More crack growth occurs during loading in high stress regime. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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