By Topic

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

Issue 9 • Date November 1987

Filter Results

Displaying Results 1 - 9 of 9
  • Monte-Carlo calculation of electrically induced human-body currents

    Publication Year: 1987, Page(s):705 - 711
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (814 KB)

    A method is described for calculating the charges and currents induced in the human body by high-voltage alternating electric fields. This relates the surface charge induced on the body to the potential in a reciprocal Laplace problem, which is then calculated by a Monte-Carlo random-walk technique. The method is applied to an experimental geometry used to study the effect of electric fields on ca... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Application of instrumental neutron activation analysis to the measurement of water tree growth in polymeric insulation

    Publication Year: 1987, Page(s):712 - 716
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (554 KB)

    The sensitive technique of instrumental neutron activation analysis (INAA) has been used to measure the penetration of ions into the water treed regions of polymeric materials. The technique has been used to study water trees grown in the laboratory, using a water electrode and to examine the concentration of trace elements in an XLPE cable which failed in service. The study shows that ions penetr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electromagnetic detection of metallic particles

    Publication Year: 1987, Page(s):717 - 720
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (457 KB)

    The effect of a conducting permeable spherical particle on the impedance of a solenoid is calculated, and consideration given to maximising the effect for detection purposes. For greatest sensitivity either the resistive change or the reactive change should be optimised, according to the method of detection; the frequency ranges needed to do so are indicated for both magnetic and non-magnetic part... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Function representation of lightning impulse wave

    Publication Year: 1987, Page(s):721 - 726
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (569 KB)

    The paper presents mathematical descriptions which fit the front, the tail and the chopping of lightning impulses which correspond with real circuits. Values of the equation coefficients are calculated which depend on the wave shapes. The wavefront and the wave chopping are analysed, assuming an infinitely long tail and treating the tested device as a capacitance. The wavetail is analysed assuming... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Charge transport in irradiated low-density polyethene

    Publication Year: 1987, Page(s):727 - 730
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (518 KB)

    A study has been made of the remanent effects of nuclear radiation on charge transport in additive-free low-density polyethene (LDPE) at 323 K. It was found that irradiation increased the conductivity of LDPE, with pure gamma radiation having a greater effect for a given absorbed dose than the mixed radiation of a thermal nuclear reactor. This increase in conductivity may be ascribed to an increas... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Charge storage on insulation surfaces in air under unidirectional impulse conditions

    Publication Year: 1987, Page(s):731 - 740
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1369 KB)

    In many insulation systems, overvoltages below the flashover level can give rise to discharges which produce free charge carriers. These charges may be deposited on insulation surfaces, resulting in a high surface field and consequent distortion of the normal field. This may result in increase, or decrease, in flashover voltage. Investigations were undertaken to examine the factors and mechanisms ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Numerical calculation of transients in electrical circuits containing elements with nonlinear eddy-current skin effect

    Publication Year: 1987, Page(s):741 - 746
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (692 KB)

    The paper is concerned with the solution of transients in electrical circuits containing elements which exhibit nonlinear eddy-current skin effect. In the proposed method, the circuit and field equations are solved simultaneously, adjustments are made for eddy-current distribution after each time step. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A snapshot of the profile of a quality circle programme at the eighteenth month stage

    Publication Year: 1987, Page(s):747 - 751
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (744 KB)

    The paper outlines the findings of a case study carried out in a printed-circuit board manufacturer, as part of a development project on quality circles funded by the Manpower Services Commission. At the time of study, the circle programme had been operational for around 18 months, which is recognised as a critical phase for circles. The strengths and weaknesses of the circle programme are discuss... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Thames Barrier

    Publication Year: 1987, Page(s):752 - 760
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1699 KB)

    An area of over 100 km2 of industrial and residential property was at increasing risk from flooding, including some 700,000 residents and the central section of the underground railway. Attention was drawn to this risk in a 1966 report by Sir Herman Bondi, and the GLC was empowered by the Thames Barrier Act of 1972 to construct a barrier at Woolwich Reach, 13 km downstream from London Bridge. The ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.