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Improving Electromagnetic Shielding with Metallic Nanoparticles


Improving Electromagnetic Shielding with Metallic Nanoparticles

Jalali, Mohsen (2013) Improving Electromagnetic Shielding with Metallic Nanoparticles. PhD thesis, Concordia University.

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Due to major advantages (e.g. weight saving, maintenance advantages), the airframe manufacturers use more and more Polymer Matrix Composites (PMCs) in different parts of aircraft structures. But PMCs have the substantial disadvantage of low conductivity and therefore low Electromagnetic (EM) Shielding. Electromagnetic Interference (EMI) sources are all around and inside aircraft and can potentially threaten the immunity of the aircraft. Metallic meshes have been used to overcome this deficiency. However at high frequencies (UHF, SHF), most of the metallic mesh loses the performance. Regrettably most of the present and upcoming systems onboard of aircraft are functional in the mentioned range of frequencies. Furthermore, passengers are using more and more Personal Electronic Devices (PEDs) onboard of aircraft. Interference caused by PEDs are also in the same range of frequencies. Measured susceptibility caused by PEDs is higher in composite aircraft comparing to metallic one. To develop this disadvantage of composite aircrafts, design of a new lightweight shield, particularly for aeronautic applications, is needed. Metallic nanoparticles have a great potential to be used as new EM shields for aerospace applications. The promising results of this work encourage the designers to use metallic nanoparticles as a new shield for protection of composite aircrafts.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical and Industrial Engineering
Item Type:Thesis (PhD)
Authors:Jalali, Mohsen
Institution:Concordia University
Degree Name:Ph. D.
Program:Mechanical Engineering
Date:28 June 2013
Thesis Supervisor(s):Wuthrich, Rolf
Keywords:Electromagnetic Shielding, Metallic Nanoparticles, Composites
ID Code:977537
Deposited On:13 Jan 2014 15:44
Last Modified:18 Jan 2018 17:44


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