Numerical modeling of hydrogen diffusion in metals accounting for large deformations

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Date

2015

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Pergamon-elsevier Science Ltd

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Mechanical Engineering
(2009)
The Atılım University Department of Mechanical Engineering started education in 2009, and offers graduate and doctorate degree programs, in addition to its undergraduate program. Our main goal is to graduate Mechanical Engineers who have the skills to design, analyze and synthesize; who are able to convert advanced technology and innovations into products; and who have the culture of research and cooperation. While our graduates reach this goal, they adopt the principle of life-long learning, and develop a sense of entrepreneurship, paying importance to professional ethics. With a curriculum prepared in line with the criteria of MÜDEK, we help our students develop themselves professionally, and socially. Graduates of mechanical engineering may be employed in many sectors and in a wide array of positions. Able to work under any field that involves production and energy conversion, graduates of the department may also gain expertise in fields such as aviation, automotive, or material engineering.

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Abstract

While the deleterious effects of hydrogen on metals and alloys are well known, the precise role of hydrogen in the underlying microscopic mechanisms is still not well understood and as of yet, the modeling attempts on hydrogen embrittlement and hydrogen induced cracking have not led to a proper method for life-time prediction. This work aims at the development of a robust numerical strategy in order to solve the non-linear coupled problem presented in the work of Anand [1]. The numerical implementation is performed for finite element method and the analysis are done to address the issue of hydrogen transport and hydrogen-embrittlement-related failures in metals. Specifically, problems related to the mechanism of hydrogen enhanced localized plasticity (HELP) is studied and macroscale shear localization phenomenon resulting from hydrogen induced material softening is considered at the phenomenological level. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Description

aslan, ozgur/0000-0002-1042-0805

Keywords

Hydrogen diffusion, Hydrogen embrittlement, Large deformations, Finite elements, Plasticity, Localization

Turkish CoHE Thesis Center URL

Citation

16

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Source

4th International Conference on Nuclear and Renewable Energy Resources (NURER) -- OCT 26-29, 2014 -- Antalya, TURKEY

Volume

40

Issue

44

Start Page

15227

End Page

15235

URI

https://doi.org/10.1016/j.ijhydene.2015.04.081
 https://hdl.handle.net/20.500.14411/766

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