Vibration tests on a PEM fuel cell stack usable in transportation application

Rajalakshmi, N.; Pandian, S.R.; Dhathathreyan, K. S.

doi:10.1016/j.ijhydene.2009.03.002

Cited by 61 publications

(25 citation statements)

References 13 publications

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“…Ahmed et al [5] simplified the fuel cell stack to a 20 cm × 20 cm composite plate structure to investigate the effect of material parameters such as Young's modulus or density on its natural frequency under random vibration condition. Rajalakshmi et al [6] researched on the influence of the amplitude and frequency of mechanical vibration on the crack propagation rate based on a MEA numerical model. A single cell model is established for simulating by Deshpande et al [7], the results show that, after one hour vibration of 10 g, a slight movement of the seal causes the deterioration of airtightness and the displacement is considered to be linearly related to the acceleration amplitude; meanwhile the bolt torque is reduced by 20-25%.…”

Section: Introductionmentioning

confidence: 99%

Effect of Friction Coefficient on Relative Slippage of Fuel Cell Stack under Mechanical Impact Condition

Hou

Wang

Zhang

et al. 2018

Modelling and Simulation in Engineering

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A simplified finite element model for large polymer electrolyte membrane fuel cell (PEMFC) stack consisting of ten cells is established in order to investigate the internal structure deformation. It is found that the interface slippage occurs when the bipolar plate (BP) and membrane electrode assembly (MEA) are subjected to vertical impact acceleration. Based on this three-dimensional model, the influence of the friction coefficient between BP and MEA on the relative slippage can be analyzed efficiently. The division layer of relative slippage is found and its vibration rule is discussed. It is observed that increasing the magnitude of impact vibration has most significant effect on the movement of the division layer, and the two variables are linearly related when impact acceleration is greater than 5 g. This work provides important insight into the choice of the friction coefficient.

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Section: Introductionmentioning

confidence: 99%

Effect of Friction Coefficient on Relative Slippage of Fuel Cell Stack under Mechanical Impact Condition

Hou

Wang

Zhang

et al. 2018

Modelling and Simulation in Engineering

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“…The electrode material of lead-acid batteries [2,3] and the mechanical structure of proton exchange membrane fuel cells (PEMFC) [4] were deformed and cracked under the condition of the certain vibration load. In terms of electrical performance, it has been found that the voltage and power of the PEMFC did not obviously change after vibration and shock tests [5].…”

Section: Introductionmentioning

confidence: 99%

“…With regard to the problem of whether the deformation of the mechanical structure inside cells would lead to the degradation of electrical performance, research in Ref. [18] noted that the capacity fading of LiFePO 4 batteries was caused by the formation of cracks inside the electrode material. Therefore, it is reasonable to suspect that the electrical performance of cells would be affected by the structural deformation and cracks inside cells induced by the vibration loading.…”

Section: Introductionmentioning

confidence: 99%

Effects of Vibration on the Electrical Performance of Lithium-Ion Cells Based on Mathematical Statistics

Zhang

Ning

et al. 2017

Applied Sciences

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Lithium-ion batteries are increasingly used in mobile applications where mechanical vibrations and shocks are a constant companion. There is evidence both in the academic and industrial communities to suggest that the electrical performance and mechanical properties of the lithium-ion cells of an electric vehicle (EV) are affected by the road-induced vibration. However, only a few studies related to the effects of vibration on the degradation of electrical performance of lithium-ion batteries have been approached. Therefore, this paper aimed to investigate the effects of vibration on the DC resistance, 1C capacity and consistency of NCR18650BE lithium-ion cells. Based on mathematical statistics, the method changes of the DC resistance and the capacity of the cells both before and after the test were analyzed with a large sample size. The results identified that a significant increase in DC resistance was observed as a result of vibration at the 95% confidence level, while typically a reduction in 1C capacity was also noted. In addition, based on a multi-feature quantity, a clustering algorithm was adopted to analyze the effect of vibration on cell consistency; the results show that the cell consistency had deteriorated after the vibration test.

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“…Ha et al [10] conducted thermal shock tests to evaluate the reliability of solder joints, reducing the testing time by a factor of five and leading to a reduction in the qualification time and cost. Rajalakshmi et al [11] presented the results of a vibration test analysis on a 500-W polymer electrolyte membrane (PEM) fuel-cell stack developed at our center.…”

Section: Introductionmentioning

confidence: 99%

Optimized Environmental Test Sequences to Ensure the Sustainability and Reliability of Marine Weapons

Yang

Kim

2014

Sustainability

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Abstract:In recent years, there has been an increase in the types of marine weapons used in response to diverse hostile threats. However, because marine weapons are only tested under a single set of environmental conditions, failures due to different environmental stresses have been difficult to detect. Hence, this study proposes an environmental test sequence for multi-environment testing. The environmental test sequences for electrical units described in the international standard IEC 60068-1, and for military supply described in the United States national standard MIL-STD-810G were investigated to propose guidelines for the appropriate test sequences. This study demonstrated the need for tests in multiple environments by investigating marine weapon accidents, and evaluated which environmental stresses and test items have the largest impacts on marine weapons using a two-phase quality function deployment (QFD) analysis of operational scenarios, environmental stresses, and environmental test items. Integer programming was used to determine the most influential test items and the shortest environmental test time, allowing us to propose optimal test procedures. Based on our analysis, we developed optimal environmental test sequences that could be selected by a test designer.

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Vibration tests on a PEM fuel cell stack usable in transportation application

Cited by 61 publications

References 13 publications

Effect of Friction Coefficient on Relative Slippage of Fuel Cell Stack under Mechanical Impact Condition

Effect of Friction Coefficient on Relative Slippage of Fuel Cell Stack under Mechanical Impact Condition

Effects of Vibration on the Electrical Performance of Lithium-Ion Cells Based on Mathematical Statistics

Optimized Environmental Test Sequences to Ensure the Sustainability and Reliability of Marine Weapons

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