X‐ray scattering study on the damage in fibers used in soft body armor after folding

• DOI: 10.1002/pc.22210
• Publication Date: 2012-04-03T19:04:32Z
• Authors: H. Kobayashi; W.G. McDonough; J.P. Dunkers; S.A. Wight; H.J. Lee; J.H. Kim; A.L. Forster; K.D. Rice; G.A. Holmes
• Keywords: Armour; Folding (DSP implementation)

Abstract The goals of the research effort described in this article are to develop a framework evaluate improvements next‐generation fibers used soft body armor and anticipate long‐term performance potential fiber deterioration. This date has included effect folding on exploring interaction between specific strain energy their sound velocity. Previous work lab noted severe drop‐off tensile strength strain‐to‐failure poly( p ‐phenylene benzobisoxazole) (PBO) when subjected repeated folding. Subsequent terephthalamide) (PPTA) showed at most slight these mechanical properties. Results from wide angle X‐ray diffraction indicated that both PPTA PBO no significant changes d‐spacing apparent crystal size. However, with small scattering, it was found void fibril sizes within may decrease after Environmental scanning electron microscopy damage surfaces upon folding, confocal revealed extensive internal tracks well SAXS testing results. POLYM. COMPOS., 2012. © 2012 Society Plastics Engineers