Skip to Main content Skip to Navigation
Theses

Contribution à la prédiction du risque lésionnel thoracique lors de chocs localisés à travers la caractérisation et la modélisation d'impacts balistiques non pénétrants

Abstract : For decades, the assessment of less-lethal weapons (LLW) and bulletproof vests has generated major interest from law enforcement agencies around the world. Indeed, these presumed less-lethal or non-lethal weapons are required to cause only significant pain to an individual to ensure their neutralization. Bulletproof vests, in turn, must provide a certain level of protection to reduce the risk of trauma related to their dynamic deformation. The Center for Research, Expertise and Logistics Support (CREL) of the French Ministry of the Interior aims to develop a tool to predict thoracic injury risk during non-penetrating ballistic impacts. It would therefore be possible to evaluate the performance of LLW and bulletproof vests before their deployment in operations. More precisely, this method must only be based on the direct measurement of the dynamic process of deformation of a synthetic gel block subjected to a ballistic impact. To address that issue, the numerical approach is considered in this thesis by the use of the human thorax dummy HUByx as an intermediate tool for the determination of transfer functions between experimental metrics on a gel block and the risk of injury. The reproduction of real impact conditions on HUByx thus requires the characterization and modeling of less-lethal projectiles as well as projectiles of firearms and bulletproof vests. They rely on an inverse method identification procedure applied to the Taylor test for modeling LLW and on the analysis of blunt impacts on the gel block for projectiles/bulletproof vests. Work is then dedicated to the mechanical characterization and modeling of the synthetic gel under dynamic loadings. Finally, a statistical approach based on correlation analyses is introduced using both experimental measurements, numerical data as well as case reports from the literature. A thorax mapping associated with the risk of rib fractures is established and only depends on an experimental metric.
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-01859920
Contributor : Abes Star :  Contact
Submitted on : Wednesday, August 22, 2018 - 4:59:09 PM
Last modification on : Monday, October 19, 2020 - 10:55:57 AM
Long-term archiving on: : Friday, November 23, 2018 - 5:48:44 PM

File

BRACQ_Anthony2.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01859920, version 1

Collections

Citation

Anthony Bracq. Contribution à la prédiction du risque lésionnel thoracique lors de chocs localisés à travers la caractérisation et la modélisation d'impacts balistiques non pénétrants. Biomécanique [physics.med-ph]. Université de Valenciennes et du Hainaut-Cambresis, 2018. Français. ⟨NNT : 2018VALE0019⟩. ⟨tel-01859920⟩

Share

Metrics

Record views

532

Files downloads

175