Results 251 to 260 of about 1,132,543 (299)

Automatic Pole Figure Recorder

Review of Scientific Instruments, 1954
A device has been developed for the direct recording in stereographic projections of pole figure data as they are supplied from a Geiger counter x-ray diffraction apparatus. The specimen is rotated systematically in a suitable goniometer about two axes in synchronism with movements of the chart and printer on the recorder. When the diffracted intensity
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Illustration of Texture with Ultrasonic Pole Figures

1987
Materials are most often used in the form of polycrystalline aggregates. Preferential orientation of the grains or crystallites within such an aggregate is known as “texture”, and almost all methods of fabrication will tend to develop a texture to some degree. To differentiate among textures, it is desirable to describe and quantify them. One technique
Smith, J., Thompson, R. Bruce, Rehbein, David, Nagel, T., Armstrong, P., Eash, D.   +5 more
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Recording and Analysis of Pole Figures by Computer

Journal of Applied Physics, 1968
A computer program has been written to produce pole figures using the data from an x-ray texture goniometer. The data are corrected for background and absorption. The pole figure is also stored on magnetic or paper tape in a form suitable for quantitative calculations.
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The Analysis of Quantitative Pole-Figure Data

Journal of Applied Physics, 1954
An analysis of isolated concentrations of poles in a pole-figure plot has been made in terms of a normal bivariate frequency distribution. A definition of pole density is given, and absolute units for measuring pole density are introduced. Simple procedures for determining the standard deviation of the pole-density distribution and for calculating the ...
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Averaging Techniques and Ultrasonic Pole Figures

1988
There is considerable interest in the evaluation of texture via ultrasonic measurements because of the advantages when compared to evaluation by diffraction techniques. First, ultrasonic measurements are much more rapid and have the potential of being used concurrently while processing.
Smith, J., Li, Y., Thompson, R. Bruce
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A computer program for the construction of pole figures

Journal of Applied Crystallography, 1971
A computer program, written in Fortran IV, is described which analyses data collected from. a Schulz texture goniometer. Graphical output is in the form of pole figures, drawn on a digital plotter. A resolving power of the order of one degree is obtainable, enabling accurate studies to be undertaken on the preferred orientation in polymers.
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An Analytical Discussion of the Construction of Pole Figures

Journal of Applied Physics, 1948
The construction of pole figures of crystal orientation data obtained by means of x-rays can be made quickly and accurately if the angular relationships between planes or ``poles'' are known and if all of the data from a diffraction pattern are used.
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On the reproducibility of the orientation distribution function of texture samples from pole figures (I). Relationship between the odf and pole figures

Kristall und Technik, 1980
AbstractThe explicit relationship between the orientation distribution function and the pole figures measured by means of diffraction experiments is derived and discussed. It is shown that these pole figures have a higher symmetry than the ODF, i.e. that it is impossible to reproduce unambiguously the ODF from pole figure datas only.
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RHEED Transmission Mode and RHEED Pole Figure

2013
In the last chapter, we presented the principles of x-ray diffraction and the construction of a pole figure, particularly the pole figure constructed from the diffraction patterns obtained by an area detector. In this chapter, we describe the similarities and differences between reflection high-energy electron diffraction (RHEED) transmission mode and ...
Gwo-Ching Wang, Toh-Ming Lu
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Warming Amplification Over the Arctic Pole and Third Pole: Trends, Mechanisms and Consequences

Earth-Science Reviews, 2021
Tonghua Wu, Nick Pepin, Gao Yanhong
exaly