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IEE Proceedings A - Physical Science, Measurement and Instrumentation, Management and Education - Reviews

Issue 9 • Date December 1986

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Displaying Results 1 - 9 of 9
  • Computation of the electric field at a solid/gas interface in the presence of surface and volume charges

    Publication Year: 1986, Page(s):577 - 586
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (816 KB)

    Enhancement of the electric field at a solid insulator/electrode/gas triple junction and on the surface of an insulator, due to imperfect contacts, surface irregularities and contamination, reduces the withstand voltage of the gas-only system. The charges deposited on the surface and in the bulk of the insulator, when stressed under high voltage, further modify the electric field. In the paper, th... View full abstract»

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  • A new UK national standard of electrical noise at 77 K in WG15

    Publication Year: 1986, Page(s):587 - 595
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (766 KB)

    A new UK national standard of electrical noise has been designed and manufactured. The device operates at liquid-nitrogen temperatures in WG15 at 7.3, 7.5 and 7.7 GHz and has an output noise temperature calculable to 0.2 K. The processes involved in the thermal and electrical evaluations of the standard are described, as are the operational details and the calculation of output noise power with it... View full abstract»

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  • On the solution of open boundary field problems using the finite-element method

    Publication Year: 1986, Page(s):596 - 600
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (385 KB)

    This contribution examines the appropriateness of boundary conditions commonly used when open boundary electromagnetic field problems are approximated using the finite-element method. The use of infinite elements is also considered, and the effect of the choice of boundary model on the interior potential distribution examined. View full abstract»

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  • Force on a parallel circular loop moving above a conducting slab and the eddy-current distribution

    Publication Year: 1986, Page(s):601 - 605
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (301 KB)

    The purpose of this work is the determination of eddy-currents induced within a conducting slab, when a parallel circular current loop is moving above it. The field owing to the eddy-currents acts on the loop and produces forces on the loop. This geometrical configuration can approach problems of the electrical machines related to the magnetic suspension, when the geometry of these problems is com... View full abstract»

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  • Electrostatic discharges from the human body

    Publication Year: 1986, Page(s):606 - 610
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (561 KB)

    Many papers have been published on the subject of electrostatic discharge (ESD) and the effect of these discharges on electronic systems. Only two of these papers have attempted to measure the actual human discharge, the rest being concerned mainly with simulated ESD. A number of simulators are now commercially available to test the susceptibility of equipment to ESD. This paper reports the result... View full abstract»

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  • Modelling gamma-source backscatter density gauges

    Publication Year: 1986, Page(s):611 - 617
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (548 KB)

    Gamma-source backscatter gauges are used to obtain a nonintrusive measurement of the density of rocks and soils from the surface. The static and moving-source versions of these instruments, which have been developed previously, allow an in situ investigation of a bulk sample of a material. Changes in gauge design and factors affecting the homogeneity of the material alter the backscatter character... View full abstract»

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  • The influence of vibration on the initiation of trees in dielectrics

    Publication Year: 1986, Page(s):618 - 622
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (654 KB)

    Polymeric insulation suffers from long-term degradation at low alternating stresses, through the development of tree-like structures of discharge channels emanating from protrusions and inhomogeneities. It can take a considerable time, following the application of voltage, before treeing begins. During this time microscopic voids and cracks form within the dielectric providing the necessary partia... View full abstract»

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  • Identifying a product strategy

    Publication Year: 1986, Page(s):623 - 629
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (778 KB)

    The paper seeks to demonstrate how the increasingly rapid technological evolution requires the identification of a product strategy for survival. This cannot be implemented at a stroke; it requires short-term action leading to medium-and long-term solutions. Finance is a major factor and the paper sets out preferred arrangements for recovery of development costs and identifies potential sources of... View full abstract»

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  • Engineering and industry¿the hidden hunger

    Publication Year: 1986, Page(s):630 - 636
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (929 KB)

    For many decades now, the performance of the UK as a manufacturing nation has been in steady decline in comparison with that of other major manufacturing nations, until, in 1984, for the first time in the history of the UK, more manufactured goods were imported than exported. Throughout this period, nothing that has been done in the country has made any difference to the trends, whether it be econ... View full abstract»

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