TY - CONF A1 - de Miguel, N. A1 - Mair, Georg A1 - Acosta, B. A1 - Szczepaniak, Mariusz A1 - Moretto, P. T1 - Hydraulic and pneumatic pressure cycle life test results on composite reinforced tanks for hydrogen storage T2 - Proceedings of the ASME 2016 Pressure Vessels and Piping Conference N2 - Current standards governing the design, qualification and in-service inspection of carbon fibre composite cylinders do not facilitate to optimise cylinder design. The requirements have been adapted from standards for metallic cylinders and cannot easily quantify the degradation processes in composite materials. In this article, the results of hydraulic and hydrogen pressure cycle life tests performed on composite reinforced tanks with a metal liner (type 3) and with a high density polymer liner (type 4) are shown. Moreover, the degradation measured by means of residual strength of the tanks after the cycling tests have been compared. It has been found that the most critical aging for metal based composite cylinder is the gaseous cycling while type 4 designs seem to be more sensitive to hydraulic cycling at high temperature. T2 - ASME 2016 Pressure Vessels and Piping Conference CY - Vancouver, British Columbia, Canada DA - 17.07.2016 KW - Composite reinforced tanks KW - Compressed hydrogen storage KW - Design and qualification standards KW - Pressure cycle life tests KW - Safety factors PY - 2016 SN - 978-0-7918-5035-0 VL - 1A SP - 63568-1 EP - 63568-10 PB - ASME CY - Vancouver, British Columbia, Canada AN - OPUS4-36275 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -