### Abstract

Describing the shields with the number of shells greater than two differs from the previously done work in having a significant increase in the number of charts needed. To limit the number of charts, only the shields were examined that have the most-used exterior aspect ratio, namely, equal to 5. It was also assumed that all the shielding shells are made of the same material with an equal and relatively small thickness, which is a practical case as well. Since the three-shell structure does not allow much freedom for variations in the air gaps between the shells, only the shields having air gaps of 5% and 10% of the diameter of the outermost shell were considered. Finally, a set of charts was computed with the help of a standard ANSYS® software employing an FEM method. The charts are represented as logarithmic contour plots where the ratio of the inner to outer shells' lengths and permeability normalized to the thickness-to-diameter ratio of the outermost shell are independent variables; and the air gaps and ratio of the middle to outer shells' lengths are fixed parameters. The charts calculated allow one to quickly estimate the axial shielding factor and to clearly observe the effect of the shield's parameters on the axial shielding.

Original language | English |
---|---|

Pages (from-to) | 2881-2883 |

Number of pages | 3 |

Journal | IEEE Transactions on Magnetics |

Volume | 37 |

Issue number | 4 I |

DOIs | |

Publication status | Published - Jul 1 2001 |

Event | 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States Duration: Jan 7 2001 → Jan 11 2001 |

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### All Science Journal Classification (ASJC) codes

- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering

### Cite this

*IEEE Transactions on Magnetics*,

*37*(4 I), 2881-2883. https://doi.org/10.1109/20.951335

**Charts for estimating the axial shielding factors for triple-shell open-ended cylindrical shields.** / Paperno, Eugene; Koide, Hiroyuki; Sasada, Ichiro.

Research output: Contribution to journal › Conference article

*IEEE Transactions on Magnetics*, vol. 37, no. 4 I, pp. 2881-2883. https://doi.org/10.1109/20.951335

}

TY - JOUR

T1 - Charts for estimating the axial shielding factors for triple-shell open-ended cylindrical shields

AU - Paperno, Eugene

AU - Koide, Hiroyuki

AU - Sasada, Ichiro

PY - 2001/7/1

Y1 - 2001/7/1

N2 - Describing the shields with the number of shells greater than two differs from the previously done work in having a significant increase in the number of charts needed. To limit the number of charts, only the shields were examined that have the most-used exterior aspect ratio, namely, equal to 5. It was also assumed that all the shielding shells are made of the same material with an equal and relatively small thickness, which is a practical case as well. Since the three-shell structure does not allow much freedom for variations in the air gaps between the shells, only the shields having air gaps of 5% and 10% of the diameter of the outermost shell were considered. Finally, a set of charts was computed with the help of a standard ANSYS® software employing an FEM method. The charts are represented as logarithmic contour plots where the ratio of the inner to outer shells' lengths and permeability normalized to the thickness-to-diameter ratio of the outermost shell are independent variables; and the air gaps and ratio of the middle to outer shells' lengths are fixed parameters. The charts calculated allow one to quickly estimate the axial shielding factor and to clearly observe the effect of the shield's parameters on the axial shielding.

AB - Describing the shields with the number of shells greater than two differs from the previously done work in having a significant increase in the number of charts needed. To limit the number of charts, only the shields were examined that have the most-used exterior aspect ratio, namely, equal to 5. It was also assumed that all the shielding shells are made of the same material with an equal and relatively small thickness, which is a practical case as well. Since the three-shell structure does not allow much freedom for variations in the air gaps between the shells, only the shields having air gaps of 5% and 10% of the diameter of the outermost shell were considered. Finally, a set of charts was computed with the help of a standard ANSYS® software employing an FEM method. The charts are represented as logarithmic contour plots where the ratio of the inner to outer shells' lengths and permeability normalized to the thickness-to-diameter ratio of the outermost shell are independent variables; and the air gaps and ratio of the middle to outer shells' lengths are fixed parameters. The charts calculated allow one to quickly estimate the axial shielding factor and to clearly observe the effect of the shield's parameters on the axial shielding.

UR - http://www.scopus.com/inward/record.url?scp=0035385981&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035385981&partnerID=8YFLogxK

U2 - 10.1109/20.951335

DO - 10.1109/20.951335

M3 - Conference article

VL - 37

SP - 2881

EP - 2883

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

SN - 0018-9464

IS - 4 I

ER -