A Structural Design Method of 3D Electromagnetic Wave-Absorbing Woven Fabrics

Area of Science:

• Materials Science
• Electromagnetics
• Textile Engineering

Background:

• Developing effective electromagnetic (EM) wave-absorbing materials is crucial for reducing signal interference and enhancing stealth technologies.
• Traditional absorbers often face limitations in bandwidth, thickness, and mechanical properties.
• 3D woven fabrics offer a promising platform for advanced functional materials due to their structural integrity and design flexibility.

Purpose of the Study:

• To propose a new structural design method for 3D electromagnetic (EM) wave-absorbing woven fabrics.
• To utilize zero-reflection equations and wave absorption models for optimizing fabric design.
• To fabricate and experimentally validate the performance of the designed 3D wave-absorbing fabrics.

Main Methods:

• A novel structural design method based on wave absorption modeling and zero-reflection equations was developed.
• 3D woven fabrics were fabricated using a bidirectional angle interlock structure.
• Continuous S-2 glass fibers were employed for the matching layer, and continuous carbon fibers for the absorbing layer, ensuring equivalent EM parameters for zero reflection.

Main Results:

• The fabricated 3D wave-absorbing fabrics exhibited a bidirectional angle interlock structure.
• Simulation and experimental results confirmed that the fabric performance trends align with theoretical predictions.
• The developed 3D fabrics demonstrated wide absorbing frequencies and significant absorption performance, reaching -20 dB.

Conclusions:

• The proposed structural design method for 3D wave-absorbing woven fabrics is validated by experimental and simulation data.
• The developed fabrics offer advantages in terms of broad absorption bandwidth and high absorption efficiency.
• This design methodology provides theoretical guidance for future advancements in 3D wave-absorbing fabric technology.