ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
Kevlar has demonstrated the ability to protect well against ballistic threats but has low resistance topuncture. Correctional Kevlar has shown good resistance to puncture. However, the fabric isexpensive, difficult to manufacture because of its tight weave construction, and has limitedprotection against ballistic threats. In an effort to produce materials that are less bulky, moreflexible, and resistant to puncture, thermoplastic-Kevlar (TP-Kevlar) composites have beenexamined. Kevlar fabric was impregnated with thermoplastic film using a hot press to produce thecomposites. Static and dynamic puncture resistant properties of the TP-Kevlar composites wereinvestigated using a National Institute of Justice (NIJ Standard 0115.00) Stab Tower. The TP-filmsused in this study were polyethylene, Surlyn, and co extruded-Surlyn, which is a co extrusion ofSurlyn and polyethylene. Response of the polyethylene (PE)-Kevlar composites, Surlyn-Kevlarcomposites, and co extruded (COEX)-Kevlar composites to spike and knife threats under static anddynamic conditions were compared with that of neat Kevlar. The infusion of thermoplastic filmsinto the Kevlar fabric was shown to dramatically increase puncture resistance during quasi-staticand dynamic testing with spikes. The TP-film type also made a difference when examining theresistance on a comparative basis of the TP-Kevlar targets. The TP-Kevlar composite targetsshowed more resistance to quasi-static spike testing than quasi-static knife testing. Weaponcomparisons revealed that the TP-Kevlar composite targets had more resistance to dynamic knifetesting than dynamic spike testing
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.136.83.pdf
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