On the Temperature-Dependent Non-Isosensitive Mechanical Behavior of Polyethylene in a Hydrogen Pressure Vessel

Mahl, M.; Jelich, Christopher; Baier, H.

doi:10.1016/j.promfg.2019.02.067

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…Due to the ease with which hydrogen can leak out from the plastic liner under high pressure, and the challenge of ensuring the strength of the connection between the metal bottle mouth and the plastic liner, there is a risk of explosion in the fully wrapped carbon fiber reinforced cylinder with a non-metallic liner. Through the investigation of hydrogen safety incidents, [17], (b) the boss structure of Hexagon Lincoln for NGV gas vessels [18].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Boss Structure of Type Ⅳ Composite Vessel for a High-Pressure Hydrogen Tube Trailer

Meng,

Jin,

et al. 2024

Sustainability

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Currently, large-volume type IV composite vessel tube trailers garner significant attention and development within the hydrogen energy storage and transportation industry due to their cost-effectiveness and practicality. This study aims to assess the static strength and sealing performance of the boss structure in order to optimize its design. Firstly, a model of the mouth structure of type IV vessels was constructed to analyze the stress distributions in the boss and liner. Subsequently, innovative boss and liner structures were developed based on the primary mouth structure to investigate the impact of geometric dimensions through finite element analysis. This study revealed that changes in geometrical dimensions led to significant alterations in the stresses of the plastic liner in comparison to metallic bosses. Building upon these findings, the structural safety and sealing performance of the boss and liner structure were further validated through finite element analysis. The outcomes of this research can serve as a reference for guiding the structural design of bosses and aiding in the development of hydrogen storage vessels.

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Section: Introductionmentioning

confidence: 99%

“…Figure 1. (a) Typical type IV boss structure[17], (b) the boss structure of Hexagon Lincoln for NGV gas vessels[18].…”

mentioning

confidence: 99%

Analysis of the Boss Structure of Type Ⅳ Composite Vessel for a High-Pressure Hydrogen Tube Trailer

Meng,

Jin,

et al. 2024

Sustainability

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“…Hoang and Lowestudied the properties change of PE pipe during the aging process by immersing the PE pipes into the water bath at different temperatures from the perspective of surface antioxidant consumption. Mahl et al . researched the effects of different temperatures on the mechanical behavior of HDPE.…”

Section: Introductionmentioning

confidence: 99%

Thermal‐oxidative aging performance and life prediction of polyethylene pipe under cyclic and constant internal pressure

Chen

Yang

Zhou

et al. 2019

J of Applied Polymer Sci

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To study the aging characteristic of the polyethylene (PE) 100 pipe under constant and cyclic internal pressure, a new accelerated thermal-oxidative aging test equipment was developed. Thermal-oxidative aging behaviors of PE pipe under constant pressure and cyclic pressure were studied in various temperatures (80, 95, and 110 C) by accelerated aging tests. The tensile test result shows that the fracture strength of PE pipe decreases as the aging time prolongs. Meanwhile, the pipe aged in the higher temperature behaves faster decreasing rate. A faster decreasing rate is also observed under the condition of cyclic pressure, compared to that under constant pressure. The thermal stability of the pipe gradually reduces and the reducing rate under cyclic pressure is higher than that under constant pressure. The result of infrared spectroscopy test suggests that oxygen-containing groups (i.e., C O) are formed on the surface of PE pipes, indicating that oxidative degradation phenomenon of PE pipes occurs during the aging process. Furthermore, based on the measured result of fracture strength, lifetime prediction models of PE 100 pipe under constant pressure and cyclic pressure are proposed. The result shows that the lifetime of PE 100 pipes obviously decreased under cyclic pressure, and it is 27.96% shorter than that under constant pressure.

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Investigation of structural stability of type IV compressed hydrogen storage tank during refueling of fuel cell vehicle

2020

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The storage of hydrogen in compressed form has evolved as the primary choice for fuel cell vehicle manufacturers. Currently, composite tanks are a mature and promising option for compressed hydrogen storage for the on‐board application. Type IV tank with carbon fiber/epoxy composite with high density polyethylene liner provides high strength, lightweight, and excellent resistance to fatigue and corrosion. However, high pressure and temperature generated during refueling affect the structural stability of the composite tank. The objective of the work is to investigate the mechanical and thermal response of the tank at different refueling conditions specified in SAEJ2601. For this, finite element analysis was used to examine the stresses, strains, deformation, and failure evolution during refueling. The results show good agreement between simulated and experimental reported burst pressure of the tank with 5.52% difference which might be due to the type of carbon fiber used, fiber winding pattern, number of layers, and loading conditions considered for the analysis. The results presented here show some new insight into behavior of composite tanks under dynamic load conditions of refueling.

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On the Temperature-Dependent Non-Isosensitive Mechanical Behavior of Polyethylene in a Hydrogen Pressure Vessel

Cited by 5 publications

References 7 publications

Analysis of the Boss Structure of Type Ⅳ Composite Vessel for a High-Pressure Hydrogen Tube Trailer

Analysis of the Boss Structure of Type Ⅳ Composite Vessel for a High-Pressure Hydrogen Tube Trailer

Thermal‐oxidative aging performance and life prediction of polyethylene pipe under cyclic and constant internal pressure

Investigation of structural stability of type IV compressed hydrogen storage tank during refueling of fuel cell vehicle

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