The Kolsky bar test has been widely used in measuring material behavior under high strain rate conditions. In particular, polymers used in ballistic applications have been characterized by this method to investigate high strain rate behaviors during the ballistic impact. Research conducted by Chen et al.  and Lim et al.  measured high strain rate properties of single PPTA [Poly (p-phenylene terephthalamide) fibers and aramid co-polymer fibers by gluing the fiber directly to the Kolsky bar, which is time consuming work and can be affected by wicking of the glue into the fiber gauge length area. Compared with these researches, Kim et al.  investigated clamping effects of the glue-tab and direct gripping methods on the single PPTA fiber tensile properties under the quasi static loading condition and applied the direct grip method for the Kolsky bar test to measure the tensile strengths at the high strain rate . This study extends measurement capability for the tensile strength, failure strain and modulus that are important parameters for the ballistic events of the soft body armor.
Proceedings Title: Proceedings of the Society for Experimental Mechanics 2013 Annual Conference
Conference Dates: June 3-6, 2013
Conference Location: lombard, IL
Pub Type: Conferences
single fiber tensile test, soft body armor, high strain rate, tensile properties