TY - GEN
T1 - Mechanical damage propagation in polymer electrolyte membrane fuel cells due to hygrothermal fatigue
AU - Banan, Roshanak
AU - Bazylak, Aimy
AU - Zu, Jean W.
N1 - Publisher Copyright:
Copyright © 2014 by ASME.
PY - 2014
Y1 - 2014
N2 - Temperature and relative humidity cycles play an important role in the initiation and propagation of mechanical damage in the PEM fuel cell membrane electrode assembly (MEA). However, there have been few studies on the mechanical damage evolution in PEM fuel cells due to humidity and temperature variations. In this study, we investigate the damage propagation in the MEA, with a special focus on the membrane/CL interface. A finite element model based on cohesive zone theory is developed to describe the effect of relative humidity (RH) amplitude on mechanical damage propagation in the MEA. Results showed that having larger RH variation in the applied cycles can result in up to 3.4 times higher fatigue stresses at the interface, and hence a considerably faster rate for delamination propagation.
AB - Temperature and relative humidity cycles play an important role in the initiation and propagation of mechanical damage in the PEM fuel cell membrane electrode assembly (MEA). However, there have been few studies on the mechanical damage evolution in PEM fuel cells due to humidity and temperature variations. In this study, we investigate the damage propagation in the MEA, with a special focus on the membrane/CL interface. A finite element model based on cohesive zone theory is developed to describe the effect of relative humidity (RH) amplitude on mechanical damage propagation in the MEA. Results showed that having larger RH variation in the applied cycles can result in up to 3.4 times higher fatigue stresses at the interface, and hence a considerably faster rate for delamination propagation.
UR - http://www.scopus.com/inward/record.url?scp=84912094043&partnerID=8YFLogxK
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U2 - 10.1115/FuelCell2014-6574
DO - 10.1115/FuelCell2014-6574
M3 - Conference contribution
AN - SCOPUS:84912094043
T3 - ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2014 Collocated with the ASME 2014 8th International Conference on Energy Sustainability
BT - ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2014 Collocated with the ASME 2014 8th International Conference on Energy Sustainability
T2 - ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2014 Collocated with the ASME 2014 8th International Conference on Energy Sustainability
Y2 - 30 June 2014 through 2 July 2014
ER -
