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Displaying 39576 - 39600 of 73461

Spot Weld Analysis with Two-Dimensional Ultrasonic Arrays

January 1, 2004
Author(s)
D A. Denisov, Craig M. Shakarji, R G. Maev, J M. Paille, B B. Lawford
This paper describes a threefold method of testing the performance of an array-based ultrasonic tool for nondestructive testing of spot welds. The tool is described in its capabilities, use, and advantages over existing counterparts. Performance testing is

Standards for Optical Communications and Sensing

January 1, 2004
Author(s)
Gordon W. Day
This paper provides a review of experience in the development of standards for optical communications and sensing, considering lessons that may be useful in the development of standards for other Information Technology (IT) services.

Supression Characteristics of Cup-Burner Flames in Low Gravity

January 1, 2004
Author(s)
F Takahashi, Gregory T. Linteris, V Katta
The structure and suppression of laminar methane air co-flow diffusion flames formed on a cup burner have been studied experimentally and numerically using physically acting fire-extinguishing agents (CO2, N2, He, and Ar) in normal earth (1g) and zero

Surface magnetic canting in a nonuniform film

January 1, 2004
Author(s)
M G. Pini, A Retlori, David P. Pappas, A. V. Anisimov, Alexander Popov
The zero temperature equilibrium configuration of a nonuniform system made of a ferromagnetic (FM) monolayer on top of a semi-infinite FM film is calculated using a nonlinear mapping formulation of mean-field theory, where the surface is taken into account

Surface Oxygen Chemistry of a Gas Sensing Material: SnO 2 (101)

January 1, 2004
Author(s)
M Batzill, K Katsiev, Anne M. Chaka, A C. Diebold
Experimental techniques and density functional theory have been employed to identify the surface composition and structure of SnO 2(101). The stoichiometric Sn 4+O 2 2- surface is only stable at high oxygen chemical potential. For lower oxidizing potential
Displaying 39576 - 39600 of 73461
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