169352 20260225150304.0 doi 10.52152/D11493 sideral 148312 ART-2026-148312 eng Miralbés Buil, Ramón Universidad de Zaragoza (orcid)0000-0002-9702-9314 Study of the lidinoid lattice structures as a substitute of expanded polystyrene foams (eps) in bicyclist helmets 2026 Access copy available to the general public Unrestricted Lidinoid structure is a triple periodic minimal surface structure (TPMS) that is defined by a mathematic function and cannot be created using traditional manufacturing technologies, so only additive manufacturing technologies are suitable for this purpose. In this article, it will be studied different parameters of these structures to obtain the mechanical properties under compression stresses. In particular, four different materials, 4 length cells and four volume fractions were tested ac-cording with the ASTM D1621/00 using a uniaxial testing machine. Specifically, specific stress-strain curve, energy absorption-strain curve, specific energy absorption-strain curve and efficiency-strain curve were calculated. Finally, using 3D scanner, a bicyclist helmet was scanned and 3D model obtained that was the basis to create an innovative helmet using this structure. The main conclusion is that it is possible to substitute traditional materials us-in Lidinoid TPMS in bicyclist helmets and that ABS is the most suitable ma-trial while PLA is the worst one. In addition, additive manufacturing allows to generate helmets with different customizable properties depending on the zone of the head that must be protected. info:eu-repo/grantAgreement/ES/AEI/AEI PID2022-137134NB-I00 info:eu-repo/semantics/embargoedAccess All rights reserved http://www.europeana.eu/rights/rr-f/ info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Ranz Angulo, David Universidad de Zaragoza (orcid)0000-0001-8451-660X Gomez Garcia, Jose Antonio Universidad de Zaragoza (orcid)0000-0002-1548-3944 Martin Compaired, Clara Luna Universidad de Zaragoza 5002 305 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Expresión Gráfica en Ing. 5002 X Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Técnica. Lab. y Talleres 101, 1 (2026), 58-62 Dyna (Bilbao) Dyna (Bilbao) 0012-7361 2002281 http://zaguan.unizar.es/record/169352/files/texto_completo.pdf Versión publicada info:eu-repo/date/embargoEnd/2026-05-01 3130478 http://zaguan.unizar.es/record/169352/files/texto_completo.jpg?subformat=icon icon Versión publicada info:eu-repo/date/embargoEnd/2026-05-01 oai:zaguan.unizar.es:169352 articulos driver 2026-02-25-14:59:53 ARTICLE