High-speed transverse impact on a high performance ballistic fiber yarn.

Conference · Mon Nov 01 04:00:00 EDT 2010

OSTI ID:1030240

Lu, Wei-Yang; Song, Bo

Many ballistic fibers have been developed and utilized in soft body armors for military and law enforcement personnel. However, it is complex and challenging to evaluate the performance of ballistic resistance for the ballistic fibers. In applications, the fibers are subjected to high speed transverse impact by external objects. It is thus desirable to understand the dynamic response of the fibers under transverse impact. Transverse wave speed has been recognized a critical parameter for ballistic-resistant performance because a faster transverse wave speed dissipates the external impact energy more quickly. In this study, we employed split Hopkinson pressure bar (SHPB) and gas gun to conduct high-speed impact on a Kevlar fiber bundle in the transverse direction at different velocities. The deformation of the fiber bundle was photographed with high-speed digital cameras. Additional sensitive transducers were employed to provide more quantitative information of the fiber response during such a transverse impact. The experimental results were used for quantitative verification of current analytical models.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1030240
• Report Number(s): SAND2010-7811C
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ARAMIDS
CAMERAS
DEFORMATION
ENFORCEMENT
FIBERS
MECHANICAL ENGINEERING
PERFORMANCE
PERSONNEL
TRANSDUCERS
VELOCITY
VERIFICATION