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Displaying 2351 - 2362 of 2362

Sample-Angle Feedback for Diffraction Anomalous Fine-Structure Spectroscopy

May 1, 1998
Author(s)
J O. Cross, W Elam, V G. Harris, J P. Kirkland, Charles E. Bouldin, L B. Sorensen
Diffraction anomalous fine-structure (DAFS) experiments measure Bragg peak intensities as continuous functions of photon energy near a core-level excitation. Measuring the integrated intensity at each energy makes the experiments prohibitively slow

X-Ray Diffraction Topography of Sapphire for Windows and Domes

March 30, 1998
Author(s)
David R. Black
X-ray diffraction topography has been used as a nondestructive characterization tool to investigate single-crystal sapphire for window and dome applications. A variety of examples are shown that demonstrate the utility of x-ray diffraction imaging as a

Multiple Fiber Technique for the Single Fiber Fragmentation Test

March 1, 1998
Author(s)
Chang K. Moon, Walter G. McDonough
The single fiber fragmentation test has been modified by embedding multiple fibers into matrix resin. During testing, we examined the interfacial shear strengths between the fibers and the matrix. In addition, the time-dependent nature of the fragmentation

Workshop on Micromechanics Measurement Technologies for Fiber-Polymer Interfaces

May 1, 1997
Author(s)
Walter G. McDonough, Richard~undefined~undefined~undefined~undefined~undefined Parnas, Gale A. Holmes, Donald L. Hunston
The Polymers Division hosted the Workshop on Micromechanics Measurement Technologies for Fiber-Polymer Interfaces, jointly sponsored by NIST and the Textile Research Institute of Princeton, NJ, on May 28-30, 1997. Fifty researchers from industry, academia

Thermomechanical Detwinning of Superconducting YBa2Cu3O7-x Single Crystals

July 11, 1989
Author(s)
Debra L. Kaiser, Frank W. Gayle, Robert S. Roth, L Swartzendruber
A method for the complete removal of twins from single crystals of superconducting YBa2Cu3O7-x is described. The process depends on ferroelastic behavior found to exist in the phase, and should be generally applicable to the layered perovskite-type phases

Characterizing and Fractionating Native Cellulose Nanofibers

Author(s)
Iulia A. Sacui, Jeffrey W. Gilman
Cellulose nanofibers have good elastic modulus properties and can be used as nano-reinforcements in polymer composites. Native cellulose nanofibers from wood, Tunicate, and bacteria (Acetobacter xylium) were characterized by atomic force microscopy (AFM)
Displaying 2351 - 2362 of 2362
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