Advanced ultra-light multifunctional metallic-glass wave springs

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dc.contributor.authorPanagiotopoulos, Nikolaos T.
dc.contributor.authorGeorgarakis, Konstantinos
dc.contributor.authorJorge Jnr, Alberto Moreira
dc.contributor.authorAljerf, M.
dc.contributor.authorBotta, Walter José
dc.contributor.authorGreer, A. Lindsay
dc.contributor.authorYavari, Ahmad
dc.date.accessioned2020-06-16T16:31:56Z
dc.date.available2020-06-16T16:31:56Z
dc.date.issued2020-05-01
dc.description.abstractWe show that, using thermo-elastic processing, metallic-glass foils can be shaped, without being embrittled, into linear and annular wave springs. These springs exhibit an undulatory behaviour, unique to metallic-glass foils, in which under compression the number of arcs in the spring increases, increasing the load-bearing capacity and the spring constant. We evaluate the performance limits of the metallic-glass wave springs, and consider how the undulatory behaviour can be exploited. The metallic-glass springs can operate over the same load-ranges as commercially available crystalline wave springs, but have material volumes (and therefore weights) that are one to two orders of magnitude less. Their energy storage per unit material volume is as high as 2600 kJ m−3. We suggest that the undulatory behaviour is important in rendering the springs fail-safe in case of overload. We discuss the range of applicability of thermo-elastic processing, the likely working limit of metallic-glass wave springs, and the potential for application of metallic-glass springs in MEMS devices.en_UK
dc.identifier.citationPanagiotopoulos NT, Georgarakis K, Jorge Jr AM, et al., (2020) Advanced ultra-light multifunctional metallic-glass wave springs. Materials and Design, Volume 192, July 2020, Article number 108770en_UK
dc.identifier.issn0264-1275
dc.identifier.urihttps://doi.org/10.1016/j.matdes.2020.108770
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15497
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectMetallic glassesen_UK
dc.subjectWave springsen_UK
dc.subjectShapingen_UK
dc.subjectElastic behaviouren_UK
dc.subjectEmbrittlementen_UK
dc.subjectEnergy storageen_UK
dc.titleAdvanced ultra-light multifunctional metallic-glass wave springsen_UK
dc.typeArticleen_UK

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