Exploring fatigue characteristics of metallic boss-polymer liner adhesion in hydrogen storage tanks: Experimental insights post surface treatment

Ahmadifar, M.; Benfriha, K.; Shirinbayan, M.; Aoussat, A.; Fitoussi, J.

doi:10.1016/j.est.2023.109771

Cited by 1 publication

(1 citation statement)

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“…Zhu [14] studied the effects of high-performance materials on the boss, the angle of the rotating platform, and the number of sealing slots on its strength, fatigue, and sealing performance and proposed an optimized boss structure to further ensure the safety of hydrogen storage vessels. Motaharinejad et al [15,16] studied the influence of the surface treatment of the boss on its adhesion to the inner liner. A method of sandblasting combined with a PEG coating was proposed to improve the service life of hydrogen storage vessels.…”

Section: Literature Review and Research Ideasmentioning

confidence: 99%

Lightweight Type-IV Hydrogen Storage Vessel Boss Based on Optimal Sealing Structure

Shao,

Wang,

et al. 2024

WEVJ

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The seal and weight of the Type IV hydrogen storage vessel are the key problems restricting the safety and driving range of fuel cell vehicles. The boss, as a metal medium connecting the inner liner of the Type IV hydrogen storage vessel with the external pipeline, affects the sealing performance of the Type IV hydrogen storage vessel, and there is no academic research on the weight of the boss. Therefore, according to the force characteristics of the boss, this paper divides the upper and lower areas (valve column and plate). The valve column with seal optimization and light weight is manufactured with a 3D printing additive, while the plate bearing and transferring the internal pressure load is manufactured by forging. Firstly, a two-dimensional axisymmetric simulation model of the sealing ring was established, and the effects of different compression rates on its seal performance were analyzed. Then, the size and position of the sealing groove were sampled, simulated, and optimized based on the Latin Hypercube method, and the reliability of the optimal seal structure was verified by experiments. Finally, the Solid Isotropic Material with Penalization (SIMP) topology method was used to optimize the weight of the boss with optimal sealing structure, and the reconstructed model was checked and analyzed. The results show that the weight of the optimized boss is reduced by 9.6%.

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Section: Literature Review and Research Ideasmentioning

confidence: 99%