Topic
Shields
About: Shields is a research topic. Over the lifetime, 1456 publications have been published within this topic receiving 10896 citations.
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TL;DR: In this article, an analytic solution for the shielding factor (SF) measured with an EEC is presented for the case of a spherical magnetic shield, which is a common approximation for magnetic shields.
Abstract: Magnetic shields are specified by the shielding factor (SF) determined with an external ac magnetic field that is uniform in the absence of the shield. External excitation coils (EECs) close to the shield are widely used as the field source. An analytic solution for the SF measured with an EEC is presented for the case of a spherical magnetic shield, which is a common approximation for magnetic shields. At the sphere center, the SF is independent of the EEC dimensions and its value is equal to the known result for a uniform excitation. The behavior of the SF measured with two widely used EEC configurations, a single coil and a symmetrical coil pair, is compared with respect to the field detector location inside the shield and the radius and position of the EEC.
2 citations
Patent•
01 Oct 1986
TL;DR: In this paper, a double-walled shield with a vacuum between its walls is used to reduce noise emission from an object or machine which produces noise by surrounding the object with a double wall shield.
Abstract: Noise emission from an object or machine which produces noise is reduced by surrounding the object with a double-walled shield 10, 12, 14, 16 which has a vacuum 22 between its walls. The presence of the vacuum substantially reduces noise transmission across the walls. In an alternative embodiment the object is surrounded by shields secured to the object via seals, and the space between the object and the shields is evacuated.
2 citations
2 citations
Patent•
30 Jul 2009
TL;DR: In this article, the conservation of energy in the glass industry via the use of heat shields to decrease the amount of energy lost during transportation from the forming process to the annealing process is discussed.
Abstract: The conservation of energy in the glass industries via the use of heat shields to decrease the amount of energy lost during transportation from the forming process to the annealing process. For maximum effectiveness, the thermal shields are made of materials whose surface has an emissivity of, but not limited too, less than 0.3. They are mounted from, or adjacent to, the means of conveyance of the glass material such that their use will not prohibit the normal production of such glass product. Their installation shall include the means for quick removal or relocation in case of production upsets. The heat shields reflect the radiant energy that is emitted from the high temperature glass back onto itself, and adjacent products, in a manner such as to reduce the loss of energy from such product that may subsequently be necessary for the annealing process.
2 citations