Development of 3D printable cementitious composites for electromagnetic interference shielding

Dimuthu Wanasinghe

doi:10.26182/3bwy-nz87

Development of 3D printable cementitious composites for electromagnetic interference shielding

Dimuthu Wanasinghe

Research output: Thesis › Doctoral Thesis

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Abstract

Electromagnetic interference (EMI) is known to cause disruption in electronic devices. This research studies the effect of a wide variety of conductive fibrous and particulate additives in a cementitious matrix for EMI shielding. The EMI shielding tests were conducted in accordance with ASTM D4935-18 standard within a frequency range of 30 MHz to 1.5 GHz. Out of the composite mixes fabricated, the hybrid mixes showed higher level of shielding, hence, developed for 3D printing. The 3D printed specimens with 0.7 wt% carbon fibre and 0.5 wt% activated carbon powder produced an average EMI shielding of 44 dB.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Aslani, Farhad, Supervisor Suvorova, Alexandra, Supervisor Ma, Guowei, Supervisor Lehane, Barry, Supervisor
Award date	15 Nov 2021
DOIs	https://doi.org/10.26182/3bwy-nz87
Publication status	Unpublished - 2021

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10.26182/3bwy-nz87

THESIS - DOCTOR OF PHILOSOPHY - WANASINGHE Dimuthu Dananjaya - 2021
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Cite this

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title = "Development of 3D printable cementitious composites for electromagnetic interference shielding",

abstract = "Electromagnetic interference (EMI) is known to cause disruption in electronic devices. This research studies the effect of a wide variety of conductive fibrous and particulate additives in a cementitious matrix for EMI shielding. The EMI shielding tests were conducted in accordance with ASTM D4935-18 standard within a frequency range of 30 MHz to 1.5 GHz. Out of the composite mixes fabricated, the hybrid mixes showed higher level of shielding, hence, developed for 3D printing. The 3D printed specimens with 0.7 wt% carbon fibre and 0.5 wt% activated carbon powder produced an average EMI shielding of 44 dB.",

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AB - Electromagnetic interference (EMI) is known to cause disruption in electronic devices. This research studies the effect of a wide variety of conductive fibrous and particulate additives in a cementitious matrix for EMI shielding. The EMI shielding tests were conducted in accordance with ASTM D4935-18 standard within a frequency range of 30 MHz to 1.5 GHz. Out of the composite mixes fabricated, the hybrid mixes showed higher level of shielding, hence, developed for 3D printing. The 3D printed specimens with 0.7 wt% carbon fibre and 0.5 wt% activated carbon powder produced an average EMI shielding of 44 dB.

KW - EMI shielding

KW - 3D printing

KW - Electromagnetic wave attenuation

KW - EMI shielding simulation

KW - Cementitious composites

KW - Conductive composites

KW - Carbon fibre composites

U2 - 10.26182/3bwy-nz87

DO - 10.26182/3bwy-nz87

M3 - Doctoral Thesis

ER -

Development of 3D printable cementitious composites for electromagnetic interference shielding

Abstract

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