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| Reference : Measurement of the force occuring at the impact of a non-lethal projectile with the Flex... |
| Scientific congresses and symposiums : Paper published in a book | |||
| Engineering, computing & technology : Mechanical engineering | |||
| http://hdl.handle.net/2268/124021 | |||
| Measurement of the force occuring at the impact of a non-lethal projectile with the Flexiforce sensor | |
| English | |
| [fr] Meausrement de la force à l'impact d'un projectile non létal à l'aide d'un capteur Flexiforce | |
Robbe, Cyril  [Université de Liège - ULg > > > Form. doct. sc. ingé. (aérosp. & méca - Bologne)] | |
| Nsiampa Ndompetelo, [Université de Liège - ULg > > > Doct. sc. ingé. (aérosp. & méca. - Bologne)] | |
| Papy, Alexandre [Ecole Royale Militaire (Belgique) - ERM > Systèmes d'Armes et Balistique > > >] | |
| 16-May-2011 | |
| 6th European Symposium on Non-Lethal Weapons 2011 proceedings | |
| No | |
| No | |
| International | |
| 6th European Symposium on Non-Lethal Weapons 2011 | |
| du 16 mai 2011 au 18 mai 2011 | |
| ICT Fraunhofer | |
| Ettlingen | |
| Allemagne | |
| [en] Ballistics ; Non-lethal-weapons ; force measurements ; piezoelectric force sensor ; accelerometer ; Flexiforce ; calibration | |
| [en] Force measurements are important to experimentally assess the effects of a non-
lethal projectile on a human body. In addition they are also necessary to evaluate the bio-fidelity of a system regarding PMHS (post mortem human subject) data. So far, as we can see in the literature, these measurements are usually achieved with an accelerometer placed inside the projectile. By assuming this projectile is perfectly rigid, the impact force can be calculated [1, 2]. However, the limitations are obvious: on the one hand the embedded accelerometer will change the projectile properties. On the other hand the force cannot directly be deduced for the deformable projectiles usually used nowadays. Therefore, a new system to measure impact force has to be developed. In this study, we propose to use the Flexiforce sensor, which is a cheap and very thin force sensor compatible with the expected measurement range [3]. The final objective is to realise an efficient force measurement on any kinetic energy non-lethal weapon (KENLW) projectile, using this particular sensor. We can find in the literature some static calibration [3,4]. As our application is highly dynamical, we started this study with the design and application of a dynamic calibration process. Then results from rigid projectiles (comparing to a classic KENLW projectile) impacting rigid targets (comparing to human body or a biofidelic surrogate) are collected and Flexiforce and accelerometer signals are compared (“rigid-rigid impacts). Finally, force measurements of projectiles impacting deformable surfaces (comparing to the projectile ) with the Flexiforce sensor are achieved (“rigid-soft impacts”). | |
| http://hdl.handle.net/2268/124021 |
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