Topic
Shields
About: Shields is a research topic. Over the lifetime, 1456 publications have been published within this topic receiving 10896 citations.
Papers published on a yearly basis
Papers
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21 Apr 1986TL;DR: In this article, a second shield is positioned between the glass sheet and the hot shield to maintain effective shading of a glass sheet for proper heat distribution and forming of the sheet, and a third shield is placed between the hot and cold shield to prevent overheating.
Abstract: Shields tend to retain heat while shading glass sheets from a heat source. As the shield retains more heat, it loses its effectiveness to shade the glass sheet. A second shield is positioned between the glass sheet and the hot shield to maintain effective shading of the glass sheet for proper heat distribution and forming of the sheet.
22 citations
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08 Sep 1988
TL;DR: In this article, the authors propose a mask consisting of two pairs of horizontally adjustable shields, arranged at an angle of 90 degrees, the shields being made of a material of low thermal conductivity.
Abstract: A device for making or undoing welds between a component with several galvanic connections and a support is particularly suited for surface mounting. In order to direct a stream of hot gas or infrared radiation accurately onto the connections of the component and corresponding weld surfaces, a mask is provided which has openings that exactly match the configuration of the weld surface. Preferably, in the case of hot-air operation, a light source is arranged behind the mask in such a way that the predetermined pattern is reproduced exactly on the substrate in the form of points of light for positioning purposes. In one embodiment, the mask comprises two pairs of horizontally adjustable shields, the two pairs of shields being arranged at an angle of 90 degrees, the shields being made of a material of low thermal conductivity.
22 citations
01 Jan 1985
TL;DR: A Fortran program has been written for the optimum design of light shields for Cassegrain optical systems with finite field, and results are shown.
Abstract: A Fortran program has been written for the optimum design of light shields for Cassegrain optical systems with finite field. The techniques employed are described, and results are shown.
22 citations
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TL;DR: In this paper, a simple method is described for calculating the shielding performance of a two-dimensional (2-D) thin finite-width shield made of imperfect material in the presence of the magnetic field from line source conductors.
Abstract: A simple method is described for calculating the shielding performance of a two-dimensional (2-D) thin finite-width shield made of imperfect material in the presence of the magnetic field from line source conductors. First, solutions to two canonical problems with closed-form simple analytic formulas are presented; shielding by reflection from and absorption in thin planar shields of infinite extent and shielding by perfect conductor shields of finite width. Then the method for calculation of magnetic-field shielding by perfect conductor finite-width shields is extended using the simple interpolation method, to thick shields made of imperfect material. Finally, the hybrid solution is developed by adding the two results in quadrature. The result is a simple theory for shielding by finite-width shields made of any real shielding material of arbitrary thickness. Its accuracy has been validated by comparison to finite-element method solutions and existing measurements.
22 citations