Research into the Failure Mechanism and Reliability of an Active Frequency-Selective Surface in Complex Environments

Area of Science:

• Electromagnetics
• Materials Science
• Structural Engineering

Background:

• Active electromagnetic functional structures, often implemented as active frequency-selective surfaces (AFSS), are vital for advanced applications like fighter jet countermeasures.
• These structures integrate active devices with structural components, leading to complex failure modes involving both structural integrity and device functionality.
• Existing research inadequately addresses the failure modes and mechanisms of these structures under complex environmental stresses, hindering practical engineering applications.

Purpose of the Study:

• To investigate and elucidate the primary failure modes and mechanisms of active electromagnetic functional structures.
• To understand the complex interplay between structural integrity, active device performance, and environmental stressors.
• To provide a foundational understanding for improving the reliability and engineering applications of AFSS.

Main Methods:

• Environmental stress analysis was employed to simulate operational conditions.
• Fault excitation tests were conducted to induce and observe failure modes.
• The study focused on identifying the relationship between applied stress and structural/functional responses.

Main Results:

• The research successfully identified key failure modes and mechanisms prevalent in active electromagnetic functional structures.
• Environmental stress analysis revealed critical stress sensitivities within the structure.
• Experimental validation confirmed the theoretical failure pathways and their impact on performance.

Conclusions:

• The study clarifies the stress sensitivity of active electromagnetic functional structures, a critical factor for their design and deployment.
• Understanding these failure modes and mechanisms is essential for enhancing the robustness and reliability of AFSS in demanding environments.
• The findings offer significant support for the practical engineering applications and future development of intelligent electromagnetic systems.