Design of a Forming Process for Increasing the Contact Length of Corrugated Plates in Molten Carbonate Fuel Cells
Abstract
:1. Introduction
2. Determination of Critical Damage Value
2.1. Experimental
2.2. FE Analysis
3. Tool Design for Increasing Contact Length of the Slot
3.1. One-Stage Forming Process
3.2. Two-Stage Forming Process
3.3. Experimental Validation of Two-Stage Forming Process and Tool Design
4. Conclusions
- The ductile fracture criterion was obtained by comparing the deformed shapes in the slitting plane obtained from the simulation and experimental results.
- In the one-stage forming process, the contact length rapidly increased with the increasing slope angle and decreasing corner radius of the slot, while the minimum thickness decreased. Necking or fracture occurred when the thickness of the slot was less than two-thirds of the initial thickness.
- In the slitting-preforming stage of the two-stage forming process, the minimum thickness and contact length of the slot were increased by increasing the forming height and slope angle, respectively. In contrast, when both the slope angle and forming height were decreased, the tearing of the slot was observed.
- In the final forming stage of the two-stage forming process, decreasing the corner radius of the final punch reduced the thickness and increased the contact length of the slot. Necking or fracture occurred when the corner radius was minimal.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Oh, Y.-S.; Moon, I.Y.; Lee, H.W.; Kim, S.-J.; Jung, J.; Kang, S.-H. Design of a Forming Process for Increasing the Contact Length of Corrugated Plates in Molten Carbonate Fuel Cells. Metals 2021, 11, 1112. https://doi.org/10.3390/met11071112
Oh Y-S, Moon IY, Lee HW, Kim S-J, Jung J, Kang S-H. Design of a Forming Process for Increasing the Contact Length of Corrugated Plates in Molten Carbonate Fuel Cells. Metals. 2021; 11(7):1112. https://doi.org/10.3390/met11071112
Chicago/Turabian StyleOh, Young-Seok, In Yong Moon, Ho Won Lee, Se-Jong Kim, Jaimyun Jung, and Seong-Hoon Kang. 2021. "Design of a Forming Process for Increasing the Contact Length of Corrugated Plates in Molten Carbonate Fuel Cells" Metals 11, no. 7: 1112. https://doi.org/10.3390/met11071112