PSI - Issue 77

João Nunes et al. / Procedia Structural Integrity 77 (2026) 593–600

599

Joa˜o Nunes et al / Structural Integrity Procedia 00 (2026) 000–000

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5. Future Work

To complement the findings discussed in this work, it is proposed to conduct long-term monitoring for the pro gressive loosening of the tightening system’s bolts, rather than assessing provoked loosening. Environmental and operational e ff ects on these measurements should also be included, and, for example, driving cycles should be sim ulated. Another proposed future step is the generation of a combined dataset that consists of both cell performance metrics and structural integrity data. By including both types of information, it will be possible to develop robust models that enable predictive maintenance capabilities, resulting in increased durability and reliability in these sys tems. Finally, within the scope of the SD3DE project, the conclusions of this study will serve as input for the future development of printed sensors.

Acknowledgements

The authors acknowledge the project NORTE2030-FEDER-01668900, financed by European Funds, through pro gram Portugal 2030, under the Eureka smart label S0511- SD3DE.

References

[1] Song, K., Wang, Y., Ding, Y., Xu, H., Mueller-Welt, P., Stuermlinger, T., Bause, K., Ehrmann, C., Weinmann, H.W., Schaefer, J., Fleischer, J., Zhu, K., Weihard, F., Trostmann, M., Schwartze, M., Albers, A., 2022. “Assembly techniques for proton exchange membrane fuel cell stack: A literature review,” Renewable and Sustainable Energy Reviews 153, 111777. doi:10.1016 / j.rser.2021.111777. [2] Zhang, W., Wu, C.W., 2014. “E ff ect of clamping load on the performance of proton exchange membrane fuel cell stack and its optimization design: A review of modeling and experimental research,” Journal of Fuel Cell Science and Technology 11(2), 020801. doi:10.1115 / 1.4026070. [3] Carral, C., Charvin, N., Trouve´, H., Me´le´, P., 2014. “An experimental analysis of PEMFC stack assembly using strain gage sensors,” International Journal of Hydrogen Energy 39(9), 4493–4501. doi:10.1016 / j.ijhydene.2014.01.033. [4] Atyabi, S.A., Afshari, E., Wongwises, S., Yan, W.M., Hadjadj, A., Shadloo, M.S., 2019. “E ff ects of assembly pressure on PEM fuel cell performance by taking into accounts electrical and thermal contact resistances,” Energy 179, 490–501. doi:10.1016 / j.energy.2019.05.031. [5] Yilgin, B., Celik, C., Boyaci San, F.G., 2025. “Clamping e ff ects on the performance of proton exchange membrane fuel cell,” International Journal of Hydrogen Energy 141, 888–895. doi:10.1016 / j.ijhydene.2024.12.015. [6] Hu, B., He, S., Su, X., Xu, L., Zhu, D., 2023. “Experimental study of the e ff ect of fastening bolts on PEMEC performance,” International Journal of Hydrogen Energy 48(90), 35050–35063. doi:10.1016 / j.ijhydene.2023.05.116. [7] Pei, H., Liu, Z., Zhang, H., Yu, Y., Tu, Z., Wan, Z., Liu, W., 2013. “In situ measurement of temperature distribution in proton exchange membrane fuel cell i a hydrogen-air stack,” Journal of Power Sources 227, 72–79. doi:10.1016 / j.jpowsour.2012.11.027. [8] Montanini, R., Squadrito, G., Giacoppo, G., 2011. “Measurement of the clamping pressure distribution in polymer electrolyte fuel cells using piezoresistive sensor arrays and digital image correlation techniques,” Journal of Power Sources 196(20), 8484–8493. doi:10.1016 / j.jpowsour.2011.06.017. [9] Bates, A., Mukherjee, S., Hwang, S., Lee, S.C., Kwon, O., Choi, G.H., Park, S., 2013. “Simulation and experimental analysis of the clamping pres sure distribution in a PEM fuel cell stack,” International Journal of Hydrogen Energy 38(15), 6481–6493. doi:10.1016 / j.ijhydene.2013.03.049. [10] Lee, S.J., Hsu, C.D., Huang, C.H., 2005. “Analyses of the fuel cell stack assembly pressure,” Journal of Power Sources 145(2), 353–361. doi:10.1016 / j.jpowsour.2005.02.057. [11] Chang, W.R., Hwang, J.J., Weng, F.B., Chan, S.H., 2007. “E ff ect of clamping pressure on the performance of a PEM fuel cell,” Journal of Power Sources 166(1), 149–154. doi:10.1016 / j.jpowsour.2007.01.015. [12] Wang, X., Song, Y., Zhang, B., 2008. “Experimental study on clamping pressure distribution in PEM fuel cells,” Journal of Power Sources 179(1), 305–309. doi:10.1016 / j.jpowsour.2007.12.055. [13] Yim, S.D., Kim, B.J., Sohn, Y.J., Yoon, Y.G., Park, G.G., Lee, W.Y., Kim, C.S., Kim, Y.C., 2010. “The influence of stack clamping pressure on the performance of PEM fuel cell stack,” Current Applied Physics 10(2 Suppl.), S59–S61. doi:10.1016 / j.cap.2009.11.042. [14] Wen, C.Y., Lin, Y.S., Lu, C.H., 2009. “Experimental study of clamping e ff ects on the performances of a single proton exchange membrane fuel cell and a 10-cell stack,” Journal of Power Sources 192(2), 475–485. doi:10.1016 / j.jpowsour.2009.03.058 [15] Toharias, B., Sua´rez, C., Iranzo, A., Salva, M., Rosa, F., 2024. “Dataset and measurements from a current density sensor during experimen tal testing of dynamic load cycling for a parallel-serpentine design of a proton exchange membrane fuel cell,” Data in Brief 54, 110392. doi:10.1016 / j.dib.2024.110392. [16] Ranaweera, M.P., Kim, J.-S., 2015. “In-Situ Temperature Sensing of SOFC during Anode Reduction and Cell Operations Using a Multi-Junction Thermocouple Network,” ECS Meeting Abstracts MA2015-03(1), 404–404. doi:10.1149 / ma2015-03 / 1 / 404. [17] Bender, G., Felt, W., Ulsh, M., 2014. “Detecting and localizing failure points in proton exchange membrane fuel cells using IR thermography,” Journal of Power Sources 253, 224–229. doi:10.1016 / j.jpowsour.2013.12.045. [18] Moldrik, P., Chesalkin, A., Minarik, D., 2019. “Infrared thermography and computer simulation in research of PEM fuel cells,” Proceedings of the 2019 20th International Scientific Conference on Electric Power Engineering (EPE), 1–5. doi:10.1109 / EPE.2019.8777969.