Results 191 to 200 of about 1,024,180 (244)

Pole Figure Integrator

Review of Scientific Instruments, 1969
A device, applicable to samples with fiber texture, is used on a diffractometer to average the diffracted x-ray intensities representing values on a pole figure. In the process, the fiber axis is rotated end-over-end continuously at a constant rate through an angle φ which is also the colatitude coordinate of the pole figure.
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Spurious Areas in Pole Figures

Journal of Applied Physics, 1954
Spurious maxima are frequently observed in pole figures determined by x-ray diffraction techniques employing the Geiger-counter spectrogoniometer. Their origin must be fully understood in order to avoid misleading interpretations of the pole-figure data.
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Investigation of Measured Pole Figures Errors

Materials Science Forum, 2005
The objective of the present work is to study of errors on measured pole figures of hexagonal materials. We used neutron time-of-flight (TOF) technique for texture measurements and obtained spectra for estimating of error values of measured pole figures.
D.I. Nikolayev, T.A. Lychagina, A.V. Nikishin, V.V. Yudin   +3 more
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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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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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Automatic Pole Figure Plotter

Review of Scientific Instruments, 1965
A simple recording apparatus has been developed which automatically plots preferred orientation information obtained by x-ray diffraction in pole figure from. It is used with spiral scanning, counter tube, preferred orientation x-ray goniometers. The apparatus consists of an X-Y recorder, a spiral time base signal generator, and an encoder which ...
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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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Reducing the Effects of Nonuniform Pole Distribution in Inverse Pole Figure Studies

Journal of Applied Physics, 1959
When x-ray-diffraction preferred orientation data are applied to the prediction of some physical property in a particular fabrication direction, a direct inverse pole figure determination is desirable. Two tests have been applied to the method. The first concerns the use of x-ray-diffraction preferred orientation data for the prediction of an aggregate
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X-ray pole figures for oriented PVC

Polymer, 1999
Abstract X-ray pole figures were obtained for samples of lightly plasticised poly(vinyl chloride) which had been subjected to monoaxial (draw ratio 2) and biaxial (draw ratio 2×2) orientation at 70°C. These pole figures confirmed the presence of crystallite orientation and suggested the presence of two distributions of crystallites, having the a ...
M. Gilbert, D.H. Ross, A. Bowen
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Improvement of Accuracy in Representation of Conventional Pole Figures

Advances in X-ray Analysis, 1966
AbstractIn the conventional pole figure, an accurate representation can be attained by correcting the observed X-ray diffraction intensity for any change in diffraction geometry and by comparing this with the correctly established standard intensity. For the intensity corrections, ASTM has prescribed the method of Decker et al.
K. Aoki, S. Hayami, M. Matsuo
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