Influence of Environmental Temperature on the Fatigue Strength of Type 3 Compressed-Hydrogen Tanks
Date Published: 2009-04-20
Paper Number:2009-01-1011
DOI: 10.4271/2009-01-1011
Citation:
Tomioka, J., Tamura, Y., Mitsuishi, H., and Watanabe, S., "Influence of Environmental Temperature on the Fatigue Strength of Type 3 Compressed-Hydrogen Tanks," SAE Technical Paper 2009-01-1011, 2009, doi:10.4271/2009-01-1011.
The environmental temperature where vehicles are used varies significantly by region and season, so this study investigated the influence of environmental temperature on the fatigue life of compressed hydrogen tanks for vehicles (Type 3). Pressure-cycle tests with varying environmental temperature were conducted on tanks until the tank was failed. Results indicated that fatigue life decreased in low-temperature environments and improved in high-temperature environments. We investigated the cause of such results using the strains inside and outside the tank and other indexes and found that the effect of autofrettage varied as environmental temperature changed, due to the difference between the thermal expansion rate of CFRP and that of aluminum alloy. Thus, we concluded that fatigue life changed according to changes in environmental temperature.
Purchase more technical papers and save! With TechSelect,
you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
Learn more >
