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Author: tinh nguyen

Displaying records 81 to 90 of 104 records.
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81. Mapping Polymer Heterogeneity Using Atomic Force Microscopy Phase Imaging and Nanoscale Indentation
Published: 4/1/2000
Authors: D T Raghavan, Xiaohong Gu, Tinh Nguyen, Mark R VanLandingham, Alamgir Karim
Abstract: Polymer coatings contain degradation-susceptible regions, and corrosion of metallic substrate can occur directly underneath these regions. In this paper, the microstructure of model coating materials is investigated using atomic force microscopy (AFM ...

82. Estimation of Absorbed Photolytic Dosage and Quantum Yields Using UV-Vis and FTIR spectroscopies
Published: 3/1/2000
Authors: Jonathan W. (Jonathan W.) Martin, Tinh Nguyen, E Byrd, N Embree
Abstract: An effective dosage model has been introduced for predicting the service life of polymeric materials exposed to UV light. The effective dosage model, which relates material damage through the apparent quantum yield, has a firm basis in the priciples ...

83. C-30 Self-Assembled Monolayers on Silica, Titania, and Zirconia: Hplc Performance, Atomic Force Microscopy, Ellipsometry, and Nmr Studies of Molecular Dynamics and Uniformity of Coverage
Published: 1/1/2000
Authors: M. Pursch, David Lloyd VanderHart, L C Sander, X H Gu, Tinh Nguyen, Stephen A Wise, Donald A. Gajewski

84. Mapping Polymer Heterogeneity Using Atomic Force Microscopy Phase Imaging and Nanoscale Indentation
Published: 1/1/2000
Authors: D T Raghavan, Xiaohong Gu, Tinh Nguyen, Mark R VanLandingham, Alamgir Karim

85. Model of Fatigue Damage in Strain Rate-Sensitive Composite Materials
Published: 1/1/2000
Authors: S K Lee, Tinh Nguyen, Tze J Chuang
Abstract: A Fatigue damage accumulation model based on the Paris law has been proposed for strain rate-sensitive polymer composite materials. A pre-exponent factor c^d2^/f and strain-rate sensitive exponent n is introduced. Numerical analysis of the model ha ...

86. Characterization of Multi-Phase and Multi-Component Polymer Systems Using the Atomic Force Microscope
Published: 8/1/1999
Authors: Mark R VanLandingham, Xiaohong Gu, D T Raghavan, Tinh Nguyen
Abstract: Recent advances have been made on two fronts regarding the capability of the atomic force microscope (AFM) to characterize the mechanical response of polymers. Phase imaging with the AFM has emerged as a powerful technique, providing contrast enhanc ...

87. Micro-Mechanic Model for Cathodic Blister growth in Painted Steel
Published: 8/1/1999
Authors: Tze J Chuang, Tinh Nguyen, S K Lee
Abstract: A micro-mechanic blister growth model is proposed for a coating system consisting of a polymer film applied to a steel substrate exposed to salt solutions. The mechanism of the blister formation is based on corrosion-induced disbondment of the coatin ...

88. Report from the 2nd Workshop on: Characterization and Modeling of the Interface/Interphase of Polymeric Materials and Systems December 7 and 8, 1998
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6352
Published: 7/1/1999
Authors: Tinh Nguyen, Charles C. Dr. Han, Richard R Cavanagh, R Ryntz
Abstract: The interface/interphase region plays a fundamental role in a wide range of polymeric materials and systems such as polymer blends and alloys, nanocomposites, particle-filled systems, paints on plastics and metals, electronic packagings, and fiber-re ...

89. A Spectroscopic Technique for Studies of Water Transport Along the Interface and Hydrolytic Stability of Polymer/substrate Systems
Published: 1/1/1999
Authors: I Linossier, F Gaillard, M Romand, Tinh Nguyen
Abstract: Information on water transport along the polymer/substrate interface is valuable for understanding the mechanisms and the controlling factors affecting the water-induced adhesion loss of polymer-coated metals, adhesive-bonded joints and polymer/fiber ...

90. Sorption and Diffusion of Water, Salt Water and Concrete Pore Solution in Composite Matrices
Published: 8/1/1998
Authors: Joannie W Chin, Tinh Nguyen, K Aouadi
Abstract: In recent years, the use of fiber-reinforced polymer composites in civil infrastructure has been promoted as a solution to the deterioration of bridges, buildings, and other structures composed of traditional materials, such as steel, concrete, and ...

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