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Search Publications by: Amanda L. Forster (Fed)

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Displaying 51 - 64 of 64

A Graphical Approach for Assessing High Strength Fiber Performance

May 20, 2010
Author(s)
Walter G. McDonough, Gale A. Holmes, Amanda L. Forster, Kirk D. Rice
The design and materials used for bullet resistant body armor have evolved continuously to keep up with the threats. In this paper, a graphical approach is presented that plots the potential strain energy absorption of some common high performance fibers

High Speed Fiber Testing: The Single Fold Test

May 20, 2010
Author(s)
Haruki Kobayashi, Walter G. McDonough, Alexander J. Shapiro, Jae H. Kim, Stefan D. Leigh, Amanda L. Forster, Kirk D. Rice, Gale A. Holmes
The failure of a first responder s body armor has prompted research to assess the long-term durability and effectiveness of current and future soft body armor products. Prior work in this laboratory described a 10 % drop in tensile strength and 15 % drop

Hydrolytic stability of polybenzobisoxazole and polyterephthalamide body armor.

May 6, 2010
Author(s)
Amanda L. Forster, Guillaume Messin, Kirk D. Rice, Pierre Pintus, Joannie W. Chin, Sylvain H. Petit
Previous work conducted at the National Institute of Standards and Technology (NIST) to investigate the field failures of soft body armor containing the material poly(p-phenylene-2,6-benzobisoxazole), or PBO, revealed that this material was susceptible to

Development of Soft Armor Conditioning Protocols for NIJ 0101.06: Analytical Results

September 24, 2009
Author(s)
Amanda L. Forster, Kirk D. Rice, Michael A. Riley, Guillaume Messin, Sylvain H. Petit, Cyril Clerici, Gale A. Holmes, Joannie W. Chin
This publication details the four major phases of analytical development work, coupled with several additional side studies, undertaken by the Office of Law Enforcement Standards in writing the Flexible Armor Conditioning Protocol in NIJ 0101.06. This

Ballistic Resistance of Body Armor.

July 21, 2008
Author(s)
Kirk D. Rice, Michael A. Riley, Amanda L. Forster
This Office of Law Enforcement Standards (OLES) performance standard provides the criteria, requirements, methodology, and procedures for ballistic resistance evaluation of personal body armor, under the jurisdiction of the NIJ Compliance Testing Program

Aging Effects on the Dynamic Tensile Response of Zylon Fibers

June 4, 2007
Author(s)
Richard L. Rhorer, Joannie W. Chin, Amanda L. Forster, Weinong W. Chen, Bo Song, Xu Nie
This paper reports on dynamic tests of fibers used in soft body armor. The type of fiber tested is poly(p-phenylene-2,6- benzobisoxaxole) (PBO), or brand name Zylon. Aged fibers were tested using a modified split Hopkinson pressure bar that loads the

Chemical and Physical Characterization of Poly(p-phenylene-2,6-benzobisoxazole) Fibers Used in Body Armor: Temperature and Humidity Aging

November 1, 2006
Author(s)
Joannie W. Chin, E Byrd, Cyril Clerici, Amanda L. Forster, M Oudina, Li Piin Sung, Kirk D. Rice
In recent years, poly(p-phenylene-2,6-benzobisoxazole) (PBO) fibers have become prominent in high strength applications such as body armor, ropes and cables, and recreational equipment. The objectives of this study were to expose woven PBO body armor

Chemical and Physical Characterization of Poly(p-phenylene benzobisoxazole) Fibers Used in Body Armor

May 1, 2006
Author(s)
Joannie W. Chin, E Byrd, Amanda L. Forster, Xiaohong Gu, Tinh Nguyen, Kirk D. Rice, Walter J. Rossiter Jr, S J. Scierka, John R. Sieber, Paul E. Stutzman, Li Piin Sung
Problems with the performance and durability of body armor based on poly(p-phenylene benzobisoxazole (PBO) fiber became apparent in the summer of 2003, when PBO-based body armor that was less than 8 months was penetrated by a bullet. Mechanical testing of

A Photoconductivity Technique for the Assessment of Pigment Reactivity

November 19, 2003
Author(s)
Joannie W. Chin, S J. Scierka, T Kim, Amanda L. Forster
Large volumes of titanium dioxide (TiO2) are utilized each year in coatings, sealants, plastics and paper for opacification and pigmentation purposes. It is well known that the photoreactivity of TiO2 can contribute to the degradation of the material that

An XPS Study on the Effects of Pigment on the UV Degradation of an Epoxy System

November 14, 2003
Author(s)
S J. Scierka, Amanda L. Forster, Wendy E. Kosik, Jonathan W. Martin
X-ray photoelectron spectroscopy (XPS) is a powerful tool that has been used to monitor the changes in chemistry on the surface of many materials. In this study it is used to examine the chemical changes in an epoxy system formulated with and without