Print Email Facebook Twitter Mechanical metamaterials for sensor protection under blast conditions Title Mechanical metamaterials for sensor protection under blast conditions Author Lubbers, L.A. Philippens, M.M.G.M. Weerheijm, J. Contributor Fangueiro, R. (editor) Publication year 2020 Abstract Mechanical metamaterials – man-made materials which derive their unusual properties from their structure rather than their composition (Bertoldi, 2017) – are able to prohibit the propagation of mechanical waves in a pre-defined frequency band, the so-called band gap (Hussein, 2014, Krushynska, 2017). Here we show how metamaterials that exhibit a bandgap can be used to design a mechanical low-pass filter with a given frequency-characteristic, with the goal to protect acceleration sensors under blast and ballistic conditions. These metamaterials should replace improvised methods for sensor protection, which commonly consist of clamped rubbers with a non-reproducible transfer function (Drysdale, 2014). Based on simulations and experiments we demonstrate how our metamaterial performs as an efficient low pass filter according to the designed transfer function. To reference this document use: http://resolver.tudelft.nl/uuid:ecf50920-000f-418b-bfe8-09de73d076d8 TNO identifier 952749 Publisher TNO, Den Haag Source AuxDefense 2020 - 2nd World Conference on Advanced Materials for Defense, Porto, Portugal, 6-8 July 2020 Document type conference paper Files To receive the publication files, please send an e-mail request to TNO Library.