A Numerical Investigation of The Fracture Energy of Materials for Fuel Cell End Plates

Adem Avcu, N. Choupani, G. Tüccar
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引用次数: 2

Abstract

Nowadays, with increasing energy requirements, the use of clean energy resources has become important. Fuel cells are an important key for clean energy technology due to wide range of utilization areas such as automotive, portable power applications, electricity generation, space, aviation and naval technologies. Additionally, they have many significant properties such as not producing harmful gases, therefore they do not cause environmental and chemical pollution. Besides, they have not any moving parts, also they do not produce noise. By comparison to fossil fuel, fuel cells have high efficiency that reaches up to 60% in appropriate conditions. Proton Exchange Membrane Fuel Cell (PEMFC) has many advantages than other fuel cell types due to simple structure, higher efficiency and low operating temperature. PEMFC may consist of one or more stacks to generate more electricity. End plate of PEMFC holds together all parts of it. Therefore, the material selection for end plate is important to provide safe conditions. To use PEMFC safely, investigation of material fracture energy is required to decide that the material is in safe conditions or not. There are three fracture energy modes which are mode I, mode II and mode III. There are many methods to investigate failure of material at different modes. Unlike other methods, Arcan specimen gives facility to evaluate of mode I, mode II and mixed modes. The main purpose of this paper was to compare the results of fracture energy (stain energy release rate) of different materials for end plates in fuel cells. Another goal was to select a suitable material was selected as PEMFC end plate.
燃料电池端板材料断裂能的数值研究
在能源需求不断增加的今天,清洁能源的利用变得越来越重要。燃料电池在汽车、移动电源、发电、航天、航空、海军等领域有着广泛的应用,是清洁能源技术的重要关键。此外,它们具有许多重要的特性,如不产生有害气体,因此它们不会造成环境和化学污染。此外,它们没有任何活动部件,也不会产生噪音。与化石燃料相比,燃料电池的效率很高,在适当的条件下可达到60%。质子交换膜燃料电池(PEMFC)具有结构简单、效率高、工作温度低等优点。PEMFC可以由一个或多个堆栈组成,以产生更多的电力。PEMFC的端板将它的所有部分连接在一起。因此,端板的材料选择对于提供安全条件至关重要。为了安全使用PEMFC,需要对材料的断裂能进行研究,以确定材料是否处于安全状态。断裂能有三种模式,即ⅰ型、ⅱ型和ⅲ型。研究材料在不同模态下的破坏有多种方法。与其他方法不同的是,Arcan试样可以方便地评估I型、II型和混合模态。本文的主要目的是比较不同材料的燃料电池端板断裂能(染色能释放率)的结果。另一个目标是选择合适的材料作为PEMFC端板。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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