Applications by fire brigades expose the composite cylinders to harsh temperature and handling conditions. Standards have been used for certifying composite cylinders, which are designed for transport of dangerous goods and do not reflect service conditions specific to fire brigades. In this paper, the residual safety of a design type (fully wrapped with aluminum and carbon fiber composite) at the end of their service life of 15 yrs is analyzed. One sample underwent hydraulic load cycle (LC) tests, another conventional burst tests, and the third slow burst tests (SBTs). The statistical evaluation and the handling of an unexpected high amount of early failures are shown.
The Residual Strength of Breathing Air Composite Cylinders Toward the End of Their Service Life—A First Assessment of a Real-Life Sample
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received February 25, 2015; final manuscript received June 8, 2016; published online July 18, 2016. Assoc. Editor: Pierre Mertiny.
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Mair, G. W., Scholz, I., and Schönfelder, T. (July 18, 2016). "The Residual Strength of Breathing Air Composite Cylinders Toward the End of Their Service Life—A First Assessment of a Real-Life Sample." ASME. J. Pressure Vessel Technol. December 2016; 138(6): 060906. https://doi.org/10.1115/1.4033878
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