Journal of Science and Technology of Composites

Journal of Science and Technology of Composites

Investigation of microwave absorption properties of epoxy composites reinforced with glass, carbon, basalt, and Kevlar fibers in the X-band

Document Type : Research Paper

Authors
Mohammad Heydari Qasemabadi 1
Hadi Sabouri 2
Reza Sarkhosh 3
Mohammad Kazemi Nasrabadi 4
1 PhD student, Graduate Education Center, Shahid Sattari University of Aeronautical Sciences and Technology, Tehran, Iran .
2 Associated Professor, Faculty of Mechanical Engineering, Kharazmi University, Tehran, Iran.
3 Assistant Professor, Department of Aerospace Engineering, Shahid Sattari University of Aeronautical Sciences and Technology, Tehran, Iran.
4 Associated Professor, Department of Aerospace Engineering, Shahid Sattari University of Aeronautical Sciences and Technology, Tehran, Iran.
10.22068/jstc.2025.2051978.1914
Abstract
In today's world, the need to effectively protect humans and equipment from electromagnetic waves has become one of the fundamental challenges in materials science. This research investigated the absorption of electromagnetic wave-absorbing materials and sought to design and manufacture ideal composite samples with desirable characteristics such as lightweight, low thickness, and high absorption capability in the X frequency band (8-12 GHz). For this purpose, carbon, Kevlar, glass, and basalt fibers were used as composite reinforcements, and four samples with dimensions of 20×20 cm and a thickness of 1 mm were manufactured. Using a network analyzer, the radio frequency absorption ability of these fibers was evaluated by the reflection method. The experimental results showed that with increasing frequency, the reflection power decreases in all samples, such that the carbon/epoxy composite exhibited the best performance with a minimum return power of -39.6961 dB at 12 GHz. Also, the remarkable performance of the basalt/epoxy sample at 11 GHz with a reflected coefficient of -31.4755 dB emphasizes the possibility of special electromagnetic shielding applications in sensitive industries such as the large aviation industry, the creation of isolated rooms, medical departments, and special military applications. This research is an effective step in designing composite materials with high absorption properties of electromagnetic waves. It can be a suitable basis for future research in material optimization and the development of new technologies.
Keywords
Absorber of electromagnetic waves
composite
radio frequency
network analyzer

Subjects

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Journal of Science and Technology of Composites
Volume 11, Issue 4
Winter 2025
Pages 2626-2633