The prediction model for resistance of composite interference‐fit joint subjected to current strike
Source abstract
Abstract
Abstract Composite interference‐fit joints are widely used in aerospace due to their reliability and load‐bearing capacity. However, they are vulnerable to lightning damage. This analyzes the prediction resistance model of a composite interference‐fit joint subjected to a current strike, focusing on electrical conductivity. Analyzing various lightning strike stages, the study establishes analytical expressions for the initial resistance related to interference‐fit size and structural dimensions before the lightning strike. Additionally, the dynamic resistance change after the lightning strike is investigated, considering the influence of the current waveform. Non‐destructive tests are employed for verification and refinement. The findings reveal a correlation between the initial resistance and the interference‐fit size in pre‐strike stage, while both the interference‐fit size and the peak current influence the equivalent resistance under low lightning current conditions. Notably, an intermediate interference‐fit size provides a substantial protective gain for the composite connection. This approach eliminates the need for destructive tests and offers a dependable data reference for aircraft component assembly.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Electrical Fault Detection and Protection · Lightning and Electromagnetic Phenomena · Smart Materials for Construction
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering Northwestern Polytechnical University Xi'an China
The Key Laboratory of Aircraft High Performance Assembly Ministry of Industry and Information Technology, Northwestern Polytechnical University Xi'an China
Fuselage Assembly Factory AVIC Xi'an Aircraft Industry Group Company Ltd Xi'an China
Funding
National Natural Science Foundation of China
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