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FEM Analysis for Sinusoidal Perturbation of Hydrogen Permeation into a Steel Sheet

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ISIJ Int. 56(3)_ 472-477 (2016).pdf567.74 kBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/72745

Title: FEM Analysis for Sinusoidal Perturbation of Hydrogen Permeation into a Steel Sheet
Authors: Yamamoto, Yudai Browse this author
Kitagawa, Yuichi Browse this author
Nakanishi, Takayuki Browse this author
Hasegawa, Yasuchika Browse this author →KAKEN DB
Fushimi, Koji Browse this author →KAKEN DB
Keywords: hydrogen permeation
Devanathan-Stachurski cell
diffusion
finite element method (FEM)
grain boundary
Issue Date: Mar-2016
Publisher: 日本鉄鋼協会
Journal Title: ISIJ International
Volume: 56
Issue: 3
Start Page: 472
End Page: 477
Publisher DOI: 10.2355/isijinternational.ISIJINT-2015-306
Abstract: Numerical calculation for the diffusion problem of hydrogen absorbed in a steel sheet during hydrogen permeation measurement using a double electrochemical cell was carried out. The finite element method (FEM) was applied to obtain the concentration distribution of hydrogen expressed by one- or two-dimensional Fick’s laws in the sheet, assuming that hydrogen concentration at the hydrogen entry interface was perturbed sinusoidally and both the hydrogen entry and exit reactions were in a mass-transport controlled process. From a comparison with experimental results reported previously, in which a phase shift from entry current to exit current waves observed on a single grain of the specimen sheet was at least two-times larger than that on two grains, it was estimated that the diffusion coefficient at a grain boundary located between two grains was five orders in magnitude larger than that on a single grain.
Type: article
URI: http://hdl.handle.net/2115/72745
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 伏見 公志

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