Soft projectile impact forces measurement using Hopkinson bars: application to ice, artificial bird and rubber
This work presents an experimental campaign of impacts of soft projectiles to measure the induced force during the impact. Three different materials acting as soft impactors that could strike against a aeronautical structural component: ice, artificial bird and rubber have been impacted at several v...
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EDP Sciences
2021-01-01
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Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2021/04/epjconf_dymat2021_01008.pdf |
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doaj-36417dd84a7c4f00b5ec89b95efb536c2021-09-21T15:17:00ZengEDP SciencesEPJ Web of Conferences2100-014X2021-01-012500100810.1051/epjconf/202125001008epjconf_dymat2021_01008Soft projectile impact forces measurement using Hopkinson bars: application to ice, artificial bird and rubberdel Cuvillo RamónArtero-Guerrero Jose AlfonsoPernas-Sánchez JesúsLópez Puente JorgeThis work presents an experimental campaign of impacts of soft projectiles to measure the induced force during the impact. Three different materials acting as soft impactors that could strike against a aeronautical structural component: ice, artificial bird and rubber have been impacted at several velocities against an aluminium Hopkinson bar. This device has been instrumented with semiconductor strain gauges that allow to obtain the induced compression strain. Additionally, all the impacts were recorded using high-speed video cameras, allowing the kinematic analysis of the projectile during the impact. After the results study, it has been concluded that there is a linear dependency between the kinetic energy and the peak force for all three materials. Added to that, it has been proved that the higher peak force corresponds to ice, despite the kinetic energy, followed by rubber and finally the artificial bird. In addition, while ice and artificial bird projectiles get radially dispersed after the impact, rubber spheres rebound due to its different behaviour. The obtained data is of great interest to design structures which could be subjected to impacts of soft materials such as aeronautic structureshttps://www.epj-conferences.org/articles/epjconf/pdf/2021/04/epjconf_dymat2021_01008.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
del Cuvillo Ramón Artero-Guerrero Jose Alfonso Pernas-Sánchez Jesús López Puente Jorge |
spellingShingle |
del Cuvillo Ramón Artero-Guerrero Jose Alfonso Pernas-Sánchez Jesús López Puente Jorge Soft projectile impact forces measurement using Hopkinson bars: application to ice, artificial bird and rubber EPJ Web of Conferences |
author_facet |
del Cuvillo Ramón Artero-Guerrero Jose Alfonso Pernas-Sánchez Jesús López Puente Jorge |
author_sort |
del Cuvillo Ramón |
title |
Soft projectile impact forces measurement using Hopkinson bars: application to ice, artificial bird and rubber |
title_short |
Soft projectile impact forces measurement using Hopkinson bars: application to ice, artificial bird and rubber |
title_full |
Soft projectile impact forces measurement using Hopkinson bars: application to ice, artificial bird and rubber |
title_fullStr |
Soft projectile impact forces measurement using Hopkinson bars: application to ice, artificial bird and rubber |
title_full_unstemmed |
Soft projectile impact forces measurement using Hopkinson bars: application to ice, artificial bird and rubber |
title_sort |
soft projectile impact forces measurement using hopkinson bars: application to ice, artificial bird and rubber |
publisher |
EDP Sciences |
series |
EPJ Web of Conferences |
issn |
2100-014X |
publishDate |
2021-01-01 |
description |
This work presents an experimental campaign of impacts of soft projectiles to measure the induced force during the impact. Three different materials acting as soft impactors that could strike against a aeronautical structural component: ice, artificial bird and rubber have been impacted at several velocities against an aluminium Hopkinson bar. This device has been instrumented with semiconductor strain gauges that allow to obtain the induced compression strain. Additionally, all the impacts were recorded using high-speed video cameras, allowing the kinematic analysis of the projectile during the impact. After the results study, it has been concluded that there is a linear dependency between the kinetic energy and the peak force for all three materials. Added to that, it has been proved that the higher peak force corresponds to ice, despite the kinetic energy, followed by rubber and finally the artificial bird. In addition, while ice and artificial bird projectiles get radially dispersed after the impact, rubber spheres rebound due to its different behaviour. The obtained data is of great interest to design structures which could be subjected to impacts of soft materials such as aeronautic structures |
url |
https://www.epj-conferences.org/articles/epjconf/pdf/2021/04/epjconf_dymat2021_01008.pdf |
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