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You searched on: Author: joannie chin

Displaying records 31 to 40 of 60 records.
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31. Effect of Artificial Perspiration and Cleaning Chemicals on the Mechanical and Chemical Properties of Ballistic Fibers
Series: NIST Interagency/Internal Report (NISTIR)
Published: 6/1/2008
Authors: Joannie W Chin, Sylvain H. Petit, Amanda Lattam Forster, Kirk D Rice, Michael A Riley
Abstract: During routine field use of soft body armor, the ballistic panels often become saturated with perspiration.  This unsavory condition motivates the user to clean and/or deodorize the armor, and anecdotal evidence is given for various methods used to a ...

32. Role of Interfacial Water in the Adhesion Loss of Polymer/Substrate Systems and Composites
Published: 6/21/2007
Authors: Tinh Nguyen, Joannie W Chin, E Byrd, David Alshed, Cyril Clerici, Jonathan W. Martin
Abstract: Water at the polymer/substrate interface in coatings, adhesives, and fiber-reinforced polymer composites is often the main cause of adhesion loss in these systems. Using experimental data measured in this study, we critically assess the role of inter ...

33. Aging Effects on the Dynamic Tensile Response of Zylon Fibers
Report Number: 823037
Published: 6/4/2007
Authors: Richard L. Rhorer, Joannie W Chin, Amanda Lattam Forster, Weinong Wayne Chen, Bo Song, Xu Nie
Abstract: 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 ...

34. Chemical and Physical Characterization of Poly(p-phenylene-2,6-benzobisoxazole) Fibers Used in Body Armor: Temperature and Humidity Aging
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7373
Published: 11/1/2006
Authors: Joannie W Chin, E Byrd, Cyril Clerici, Amanda Lattam Forster, M Oudina, Li Piin Sung, Kirk D Rice
Abstract: 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 arm ...

35. Chemical and Physical Characterization of Poly(p-phenylene benzobisoxazole) Fibers Used in Body Armor
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7237
Published: 5/1/2006
Authors: Joannie W Chin, E Byrd, Amanda Lattam Forster, Xiaohong Gu, Tinh Nguyen, Kirk D Rice, Walter J. Rossiter Jr, S J Scierka, John R Sieber, Paul E Stutzman, Li Piin Sung
Abstract: 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 te ...

36. Validation of the Receprocity Law for Coating Photodegradation
Published: 10/20/2004
Authors: Joannie W Chin, Tinh Nguyen, Jonathan W. Martin, E Byrd
Abstract: Accelerating the photodegradation of commerical polymeric materials has great practical importance in the weathering community. However, questions exist as to whether high radiant flux exposure results cn be extrapolated to in-service exposure levels ...

37. A Photoconductivity Technique for the Assessment of Pigment Reactivity
Published: 11/19/2003
Authors: Joannie W Chin, S J Scierka, T Kim, Amanda Lattam Forster
Abstract: 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 materia ...

38. Accelerated UV Weathering Device Based on Integrating Sphere Technology
Published: 11/1/2003
Authors: Joannie W Chin, E Byrd, E Embree, Jason D. Garver, B Dickens, T Finn, Jonathan W. Martin
Abstract: An accelerated ultraviolet (UV) weathering device based on integrating sphere technology has been designed, fabricated, and implemented in weathering studies of polymers. This device has the capability of irradiating multiple speciments with exptreme ...

39. Reciprocity Law Experiments in Polymeric Photodegradation: A Critical Review
Published: 9/1/2003
Authors: Jonathan W. Martin, Joannie W Chin, Tinh Nguyen
Abstract: celerating the photodegradation of polymeric materials is of great interest in weathering research. One way of achieving acceleration is by exposing polymeric materials to a high radiant flux, but questions have arisen as to whether high radiant fl ...

40. Effects of Ultraviolet Radiation Exposure on Vinyl Ester Resins: Characterization of Chemical, Physical and Mechanical Damage
Published: 1/1/2003
Authors: A Signor, Mark R VanLandingham, Joannie W Chin
Abstract: The increased use of fiber-reinforced vinyl ester composites in outdoor applications has led to questions concerning the environmental durability of these materials, particularly as related to UV exposure. In this work, artificial ultra-violet (UV) ...

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  • SP 250-XX: Calibration Services
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