Influence of the fiber alignment in the ballistic performance of dyneema non-woven fabrics

Francisca Martinez-Hergueta, Francisco Gálvez, Carlos González

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The aim of this study was the determination of the deforming micromechanisms of needlepunched felts subjected to impact loads. A large experimental campaign has been carried out to analyze the influence of the fiber alignment in the ballistic performance. Ballistic limit curves of predeformed samples were compared. The fiber realignment was experimentally measure by means of 2D X-Ray diffraction. Higher specific absorption was observed for samples with a more isotropic mechanical response. A constitutive physicallybased model was developed within the context of the finite element method, which provided the constitutive response for a mesodomain including micromechanical aspects as fiber alignment, fiber sliding and pull-out. The macroscopic response has been validated with the experimental results, showing a very good agreement. The absorbed energy by the material during the impact was predicted and the fiber realignment evolution was also obtained.

Original languageEnglish
Title of host publicationTerminal Ballistics, Vulnerability and Survivability
PublisherDESTECH PUBLICATIONS, INC
Pages931-941
Number of pages11
Volume2
ISBN (Electronic)9781605951492
Publication statusPublished - 1 Jan 2014
Event28th International Symposium on Ballistics, BALLISTICS 2014 - Atlanta, United States
Duration: 22 Sep 201426 Sep 2014

Conference

Conference28th International Symposium on Ballistics, BALLISTICS 2014
Country/TerritoryUnited States
CityAtlanta
Period22/09/1426/09/14

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