Theoretical analysis of design of filament wound type 3 composite cylinder for the storage of compressed hydrogen gas

Abstract Compressed hydrogen gas cylinders with an aluminum liner and carbon fiber wound are currently used as main storage containers in hydrogen fuel cell vehicles region, such cylinders filled with hydrogen gas have the advantages of light weight, high pressure resistance etc. Owing to the fact that cylinders are generally pressurized to 35MPa-92MPa, they may have a vital impact on life and property if failure of the cylinder occurs. For risk prediction, a series of comparative experiments have been carried out and some tests results have been analyzed, where the typical failure mode of such hydrogen cylinders are summarized as irreversible failure, recoverable failure and preventable failure. Irreversible failure refers to the failure mode such as leakage, rupture and penetration, etc, which could cause the cylinder not to restore its original function. Recoverable failure includes thread damage, security attachment startup and so on. The original function of the cylinder could be repaired by repairing the thread and replacing the safety accessories. Preventable failure would be found under the condition such as load at extreme ambient temperature for a long time, filament wound layer cracking caused by surface damage, chemical corrosion and serious impact etc, which could decrease the cylinder strength. In case of existing the preventable failure, cylinders should be monitored in use and the service life would be reduced.

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Theoretical Analysis of Porosity in an Ordered Porous Copper Fabricated by Continuous Unidirectional Solidification

Materials Science Forum ◽

10.4028/www.scientific.net/msf.933.136 ◽

2018 ◽

Vol 933 ◽

pp. 136-141

Author(s):

Rong Cao ◽

Qing Lin Jin

Keyword(s):

High Pressure ◽

Theoretical Model ◽

Theoretical Analysis ◽

Processing Parameters ◽

Unidirectional Solidification ◽

Hydrogen Gas ◽

Porous Copper ◽

Gas Atmosphere ◽

Ordered Porous ◽

Good Agreement

Ordered porous copper with elongated pores has been fabricated by a continuous unidirectional solidification method in a hydrogen gas atmosphere with high pressure. The porosity of the ordered porous copper is significantly affected by the pressure of hydrogen. A theoretical model is developed to get the relation between the porosity and the processing parameters. The calculated values are in good agreement with the experimental results. Key words: Unidirectional solidification; Ordered porous copper; Porosity; Modeling.

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Damage Behavior of Filament-Wound Composite Cylinder Under Impact by Flat-Ended Impactor

Volume 3A: Design and Analysis ◽

10.1115/pvp2018-84485 ◽

2018 ◽

Cited By ~ 1

Author(s):

Qiaoguo Wu ◽

Xuedong Chen ◽

Zhichao Fan ◽

Yong Jiang ◽

Xiaoqiang Zhang ◽

...

Keyword(s):

Cylinder Wall ◽

Composite Cylinder ◽

Time Curve ◽

Damage Behavior ◽

Acceleration Time ◽

Damage Morphology ◽

Filament Wound ◽

Filament Wound Composite ◽

Impact Acceleration ◽

The Impact

Numerical simulations were performed on the damage behavior of carbon-fiber-wrapped composite cylinder subjected to impact by a flat-ended impactor. The simulation results were in agreement with the test in terms of both the damage morphology of the cylinder and the impact acceleration-time curve of the impactor. The relationship between the impact acceleration-time curve characteristics and the initiation and propagation process of the various damages was analyzed. The effects of the internal pressure on the damage morphology of the cylinder, the impact acceleration-time curve of the impactor, and the critical perforation energy of the cylinder wall were discussed. Change law of the residual burst pressure of the cylinder with different impact energies was obtained. The conclusions in this paper are helpful for the safety assessment of the composite cylinders subjected to impact by foreign objects.

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Wave propagation in the filament-wound composite pipes conveying fluid: Theoretical analysis for structural health monitoring applications

Composites Science and Technology ◽

10.1016/j.compscitech.2014.04.018 ◽

2014 ◽

Vol 98 ◽

pp. 9-14 ◽

Cited By ~ 10

Author(s):

Jin-Xing Shi ◽

Toshiaki Natsuki ◽

Xiao-Wen Lei ◽

Qing-Qing Ni

Keyword(s):

Wave Propagation ◽

Theoretical Analysis ◽

Health Monitoring ◽

Filament Wound ◽

Monitoring Applications ◽

Filament Wound Composite ◽

Pipes Conveying Fluid ◽

Composite Pipes ◽

Wound Composite ◽

Conveying Fluid

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Experimental and numerical studies of impact on filament-wound composite cylinder

Acta Mechanica Solida Sinica ◽

10.1016/j.camss.2017.09.001 ◽

2017 ◽

Vol 30 (5) ◽

pp. 540-549 ◽

Cited By ~ 8

Author(s):

Qiaoguo Wu ◽

Xuedong Chen ◽

Zhichao Fan ◽

Yong Jiang ◽

Defu Nie

Keyword(s):

Composite Cylinder ◽

Numerical Studies ◽

Filament Wound ◽

Filament Wound Composite ◽

Wound Composite

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Damage Detection of Filament Wound Composite Cylinder Using Ultrasonic Waves

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.249-250.856 ◽

2012 ◽

Vol 249-250 ◽

pp. 856-862 ◽

Cited By ~ 1

Author(s):

Lei Gu ◽

Ke Zhuang Gong ◽

Gui Yun Gao ◽

Zheng Li

Keyword(s):

Damage Detection ◽

Composite Layer ◽

Thick Layer ◽

Ultrasonic Waves ◽

Composite Cylinder ◽

Filament Wound ◽

Filament Wound Composite ◽

Steel Liner ◽

Pulse Echo ◽

Wound Composite

This paper experimentally investigates the damage detection of filament-wound (FW) thick-wall composite cylinder using ultrasonic waves. The multi-layered cylinder has a 20 mm-thick steel liner with an inner radius of 421 mm, an 11 mm-thick layer of unidirectional carbon fiber reinforced composite that is wound on the steel liner, and a 2.15 mm-thick layer of coating over the composites. Damages are pre-manufactured in different wall depths of the cylinder. The main damages to be detected include the defects in the composite layer, the interface debonding between the composite layer and the steel liner, and the change of thickness of the steel liner due to corrosion. To interrogate above mentioned damages, the longitudinal waves are excited using an ultrasonic transducer in pulse-echo mode along the radial direction of the cylinder. The continuous wavelet transform (CWT) is used to analyze the reflected-ultrasonic signals in order to obtain the Time-of-Flight (ToF) and the amplitude ratio of different interfaces. Based on the ToF and amplitude ratios, the location and size of the damages are identified and the thickness of the steel liner is determined. Experimental results show that the ultrasonic pulse-echo technique combined with the CWT is feasible in damage detection of multi-layered filament-wound composite cylinder especially when a coating layer exists.

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