Skip to Main Content
Skip Nav Destination
ASME Press Select Proceedings
International Hydrogen Conference (IHC 2016): Materials Performance in Hydrogen Environments
B. P. Somerday
B. P. Somerday
Search for other works by this author on:
P. Sofronis
P. Sofronis
Search for other works by this author on:
No. of Pages:
ASME Press
Publication date:

The growth rate of fatigue cracks is accelerated under high pressure hydrogen because of hydrogen embrittlement. Hydrogen diffusion is enhanced by a hydrostatic stress field, and an accumulation of hydrogen in the fracture point is necessary to cause hydrogen embrittlement. In this paper, fatigue crack growth behavior under different hydrogen pressure was first investigated. Hydrogen diffusion behavior was analyzed by a finite element analysis based on the Fick’s diffusion theory with a modification in the stress gradient term. Fatigue crack growth rate was accelerated by higher pressure because of increased hydrogen concentration around the crack tip region. Clear relationship was seen between the crack growth acceleration rate and the rate of hydrogen accumulation in the crack tip region.

Fatigue Crack Growth Behavior Under High Pressure Hydrogen
Hydrogen Diffusion Analysis Around Crack Tip Region
This content is only available via PDF.
You do not currently have access to this chapter.
Close Modal

or Create an Account

Close Modal
Close Modal