Temperature-dependent fatigue crack growth mechanisms of fuel cell membranes
Source abstract
Abstract
Abstract The fatigue crack growth behaviors of two fuel membranes are investigated at different temperatures. Fatigue crack growth rate increases with temperature, and Nafion XL membrane is more sensitive to temperature. An Arrhenius-type expression for fatigue crack growth rate is proposed and good prediction results are obtained. For Nafion XL composite membrane, fatigue crack grows by forming micropores ahead of crack tip. These micropore are formed due to the combined action of hygrothermal environment and mechanical stress, which increase with temperature. Besides, the interior micropores and microstructure changes in reinforcement layer also account for higher temperature sensitivity of Nafion XL membrane.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fuel Cells and Related Materials · Advancements in Solid Oxide Fuel Cells · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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