TY - JOUR A1 - Becker, Ben A1 - Mair, Georg T1 - Statistical analysis of burst requirements from regulations for composite cylinders in hydrogen transport JF - Materials Testing N2 - Existing standards for the approval of composite cylinders for the transport of compressed hydrogen are currently based on deterministic (ISO 11119-3) and semi-probabilistic (UN GTR No. 13) criteria. This paper analysis the capabilities of these procedures with respect to the evaluation of burst strength. Their characteristics are compared with the probabilistic approach developed at BAM. Based on Monte-Carlo simulations the available design range (mean value and scatter of burst strength) of all concepts are assessed. In addition, the probability of acceptance for potentially unsafe design types is determined. The results show large areas of burst properties with a sufficient reliability which cannot be used for the design of composite cylinders, due to current approval criteria. On the other hand, existing standards allow the approval of potentially unsafe designs in case of a very high scatter regarding their burst strength. It is also shown that existing design types are already designed to the limits of the available design area. A further weight and cost reduction of composite cylinders is therefore closely related to the approval criteria. An example based on UN GTR No. 13 shows how an approval criterion can be optimized by using statistical methods. The example shows that a reduced minimum burst pressure can be combined with a lower probability of acceptance for potentially unsafe design types. KW - Composite cylinder KW - Monte Carlo simulation KW - Burst requirements PY - 2017 UR - http://www.hanser-elibrary.com/doi/pdf/10.3139/120.110988 DO - https://doi.org/10.3139/120.110988 SN - 0025-5300 VL - 59 IS - 3 SP - 226 EP - 232 PB - Carl Hanser Verlag CY - München AN - OPUS4-39526 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -