Physics MS Research Project by Nilufar Yesmin Electromagnetic Shield of Advanced Composites
When: Thursday,
January 14, 2021
11:00 AM
-
1:00 PM
Where: Online
Description: Physics Master of Science Research Project by
Nilufar Yesmin
Date: Thursday, January 14, 2021
Time: 11:00am
Topic: Electromagnetic Shielding of Advanced Composites
Zoom Conference:
https://umassd.zoom.us/j/91882359379?pwd=V1Qzc09xZXBYdERhUnk3ZlAvWmcydz09
Abstract:
In this present study, an experimental investigation is performed to observe Electromagnetic Interference Shielding Effect (EMI-SE) glass fiber/epoxy laminated composite embedded with carbon nanotubes (CNTs) & Fe3O4 nanoparticles and reinforced with short carbon fibers along thickness direction. A vacuum infusion process is used to fabricate the composites. EMI-SE of the composite is measured in the X-band frequency range (8-12 GHz) using a programmable vector network analyzer with two standard coaxial launchers guide EM wave and a copper sample holder in between the launchers. The effect of carbon fibers of three different lengths (80µm,150µm, and 350µm) with two different fiber densities (1000 and 2000 fibers/mm2) and two different amounts of Fe3O4 nanoparticles (0.5 and 1% wt.) on total SE, absorption and reflection is investigated. The absorption part of SE played crucial role in improving the total SE for all composite types and it is more pronounced in composites of longer carbon fibers and higher fiber density with improved electrical conductivity. The presence of Fe3O4 nanoparticles also enhanced total SE values with improved permeability. The maximum total SE is obtained for the composite 350µm length and 2000 fibers/mm2 density with 1 wt.% of Fe3O4 nanoparticles
ADVISOR(S): Dr. Vijaya Chalivendra, Department of Mechanical Engineering
(vchalivendra@umassd.edu, 508.910.6572)
COMMITTEE MEMBERS: Dr. Jianyi Wang, Department of Physics
Dr. Yifei Li, Department of Electrical and Computer Engineering
Dr. Renuka Rajapakse, Department of Physics
NOTE: All PHY Graduate Students are ENCOURAGED to attend.
Open to the public. All interested parties are invited to attend.
Nilufar Yesmin
Date: Thursday, January 14, 2021
Time: 11:00am
Topic: Electromagnetic Shielding of Advanced Composites
Zoom Conference:
https://umassd.zoom.us/j/91882359379?pwd=V1Qzc09xZXBYdERhUnk3ZlAvWmcydz09
Abstract:
In this present study, an experimental investigation is performed to observe Electromagnetic Interference Shielding Effect (EMI-SE) glass fiber/epoxy laminated composite embedded with carbon nanotubes (CNTs) & Fe3O4 nanoparticles and reinforced with short carbon fibers along thickness direction. A vacuum infusion process is used to fabricate the composites. EMI-SE of the composite is measured in the X-band frequency range (8-12 GHz) using a programmable vector network analyzer with two standard coaxial launchers guide EM wave and a copper sample holder in between the launchers. The effect of carbon fibers of three different lengths (80µm,150µm, and 350µm) with two different fiber densities (1000 and 2000 fibers/mm2) and two different amounts of Fe3O4 nanoparticles (0.5 and 1% wt.) on total SE, absorption and reflection is investigated. The absorption part of SE played crucial role in improving the total SE for all composite types and it is more pronounced in composites of longer carbon fibers and higher fiber density with improved electrical conductivity. The presence of Fe3O4 nanoparticles also enhanced total SE values with improved permeability. The maximum total SE is obtained for the composite 350µm length and 2000 fibers/mm2 density with 1 wt.% of Fe3O4 nanoparticles
ADVISOR(S): Dr. Vijaya Chalivendra, Department of Mechanical Engineering
(vchalivendra@umassd.edu, 508.910.6572)
COMMITTEE MEMBERS: Dr. Jianyi Wang, Department of Physics
Dr. Yifei Li, Department of Electrical and Computer Engineering
Dr. Renuka Rajapakse, Department of Physics
NOTE: All PHY Graduate Students are ENCOURAGED to attend.
Open to the public. All interested parties are invited to attend.
Contact: > See Description for contact information
Topical Areas: Faculty, General Public, Students, Students, Graduate, Students, Undergraduate, Bioengineering, Civil and Environmental Engineering, College of Engineering, Computer and Information Science, Co-op Program, Electrical and Computer Engineering, Mechanical Engineering, Physics