000109704 001__ 109704
000109704 005__ 20230519145555.0
000109704 0247_ $$2doi$$a10.3390/app112311318
000109704 0248_ $$2sideral$$a126770
000109704 037__ $$aART-2021-126770
000109704 041__ $$aeng
000109704 100__ $$0(orcid)0000-0002-3398-067X$$aJuste-Lorente Ó.
000109704 245__ $$aThe influence of headform/helmet friction on head impact biomechanics in oblique impacts at different tangential velocities
000109704 260__ $$c2021
000109704 5060_ $$aAccess copy available to the general public$$fUnrestricted
000109704 5203_ $$aOblique impacts of the helmet against the ground are the most frequent scenarios in real-world motorcycle crashes. The combination of two factors that largely affect the results of oblique impact tests are discussed in this work. This study aims to quantify the effect of the friction at the interface between the headform and the interior of a motorcycle helmet at different magnitudes of tangential velocity. The helmeted headform, with low friction and high friction surface of the headform, was dropped against three oblique anvils at different impact velocities resulting in three different magnitudes of the tangential velocity (3.27 m/s, 5.66 m/s, 8.08 m/s) with the same normal component of the impact velocity (5.66 m/s). Three impact directions (front, left-side and right-side) and three repetitions per impact condition were tested resulting in 54 impacts. Tangential velocity variation showed little effect on the linear acceleration results. On the contrary, the rotational results showed that the effect of the headform’s surface depends on the magnitude of the tangential velocity and on the impact direction. These results indicate that a combination of low friction with low tangential velocities may result into underprediction of the rotational headform variables that would not be representative of real-world conditions. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
000109704 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000109704 590__ $$a2.838$$b2021
000109704 592__ $$a0.507$$b2021
000109704 594__ $$a3.7$$b2021
000109704 591__ $$aENGINEERING, MULTIDISCIPLINARY$$b39 / 92 = 0.424$$c2021$$dQ2$$eT2
000109704 591__ $$aPHYSICS, APPLIED$$b76 / 161 = 0.472$$c2021$$dQ2$$eT2
000109704 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b218 / 345 = 0.632$$c2021$$dQ3$$eT2
000109704 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b100 / 180 = 0.556$$c2021$$dQ3$$eT2
000109704 593__ $$aEngineering (miscellaneous)$$c2021$$dQ2
000109704 593__ $$aComputer Science Applications$$c2021$$dQ2
000109704 593__ $$aProcess Chemistry and Technology$$c2021$$dQ2
000109704 593__ $$aMaterials Science (miscellaneous)$$c2021$$dQ2
000109704 593__ $$aFluid Flow and Transfer Processes$$c2021$$dQ2
000109704 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000109704 700__ $$0(orcid)0000-0003-1261-8847$$aMaza M.$$uUniversidad de Zaragoza
000109704 700__ $$aPiccand M.
000109704 700__ $$aLópez-Valdés F.J.
000109704 7102_ $$15004$$2530$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Ingen.e Infraestr.Transp.
000109704 773__ $$g11, 23 (2021), 11318 [21 pp]$$pAppl. sci.$$tApplied Sciences (Switzerland)$$x2076-3417
000109704 8564_ $$s3071138$$uhttps://zaguan.unizar.es/record/109704/files/texto_completo.pdf$$yVersión publicada
000109704 8564_ $$s2681853$$uhttps://zaguan.unizar.es/record/109704/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000109704 909CO $$ooai:zaguan.unizar.es:109704$$particulos$$pdriver
000109704 951__ $$a2023-05-18-15:54:24
000109704 980__ $$aARTICLE