The weight of a bipolar plate is one of the most crucial properties from the viewpoint of improving the power density of a proton-exchange membrane fuel cell (PEMFC) stack. Aluminum alloys have good material characteristics such as low electrical resistivity, high thermal conductivity, and low density. Furthermore, they are less expensive and easily machinable compared to graphite when used for fabricating bipolar plates. In this study, the use of AA5052 for fabricating a bipolar plate was investigated. The results of the feasibility experiments conducted to develop fuel cells with AA5052 bipolar plates having multiple microchannels were presented. The formability of microchannels under various types of pulsating loads was estimated for different punch loads and die radii using 0.3 mm thick AA5052 sheets. For a 0.1 mm die radius, the optimum formability was obtained for five cycles of sine wave dynamic loading with a maximum load of 90 kN. The experimental results demonstrated the feasibility of the proposed technique for fabricating bipolar plates.
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October 2014
Research-Article
Formability Evaluation of Microchannels of Aluminum Bipolar Plate Stamped Under Pulsating Load
J. Y. Koo,
J. Y. Koo
Precision Manufacturing System Division,
e-mail: jykoo@pusan.ac.kr
Pusan National University
,Pusan 609-735
, Korea
e-mail: jykoo@pusan.ac.kr
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H. H. Kim,
H. H. Kim
Precision Manufacturing System Division,
e-mail: gn777me@pusan.ac.kr
Pusan National University
,Pusan 609-735
, Korea
e-mail: gn777me@pusan.ac.kr
Search for other works by this author on:
Y. P. Jeon,
Y. P. Jeon
Precision Manufacturing System Division,
e-mail: ypjeon@pusan.ac.kr
Pusan National University
,Pusan 609-735
, Korea
e-mail: ypjeon@pusan.ac.kr
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C. G. Kang
C. G. Kang
1
School of Mechanical Engineering,
e-mail: cgkang@pusan.ac.kr
Pusan National University
,Pusan 609-735
, Korea
e-mail: cgkang@pusan.ac.kr
1Corresponding author.
Search for other works by this author on:
J. Y. Koo
Precision Manufacturing System Division,
e-mail: jykoo@pusan.ac.kr
Pusan National University
,Pusan 609-735
, Korea
e-mail: jykoo@pusan.ac.kr
H. H. Kim
Precision Manufacturing System Division,
e-mail: gn777me@pusan.ac.kr
Pusan National University
,Pusan 609-735
, Korea
e-mail: gn777me@pusan.ac.kr
Y. P. Jeon
Precision Manufacturing System Division,
e-mail: ypjeon@pusan.ac.kr
Pusan National University
,Pusan 609-735
, Korea
e-mail: ypjeon@pusan.ac.kr
C. G. Kang
School of Mechanical Engineering,
e-mail: cgkang@pusan.ac.kr
Pusan National University
,Pusan 609-735
, Korea
e-mail: cgkang@pusan.ac.kr
1Corresponding author.
Contributed by the Materials Division of ASME for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received April 24, 2012; final manuscript received August 12, 2014; published online August 27, 2014. Assoc. Editor: Marwan K. Khraisheh.
J. Eng. Mater. Technol. Oct 2014, 136(4): 041004 (8 pages)
Published Online: August 27, 2014
Article history
Received:
April 24, 2012
Revision Received:
August 12, 2014
Citation
Koo, J. Y., Kim, H. H., Jeon, Y. P., and Kang, C. G. (August 27, 2014). "Formability Evaluation of Microchannels of Aluminum Bipolar Plate Stamped Under Pulsating Load." ASME. J. Eng. Mater. Technol. October 2014; 136(4): 041004. https://doi.org/10.1115/1.4028336
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