期刊
COMPOSITE STRUCTURES
卷 210, 期 -, 页码 906-913出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2018.11.095
关键词
Lightning strike protection material; Composite fuselage; Automation; Offline programming; Path generation; Doubly curved surface
资金
- Federal Ministry for Economic Affairs and Energy (BMWi)
Lighting strike protection is not intrinsically provided on modern composite built aircraft due to the lower electrical conductivity of composite materials. A highly conductive copper foil is manually applied onto the fuselage in multiple overlapping tapes. Known automation processes are not adequate for wide tapes particularly in the case of large double-curved surfaces. One key technology for enabling an automated process is tape trajectory generation with a focus on automation constraints. We are introducing a new tape application mechanism for a single wide tape. Our algorithm generates geometry induced layup trajectories, taking into account geometric conditions. We experimentally demonstrate a wrinkle-free automated application. Based on the first algorithm, a second algorithm addresses the challenging issue of an optimised surface coverage with multiple tapes for a fuselage section. A tape application fitness criterion is defined and implemented. We point out that a computer-based algorithm is advantageous for determining the proper arrangement of multiple tapes. It is thus now possible to create a multiple tape design that can be applied with an automation process. In addition, the optimisation leads to a reduction of consumed and wasted tape material in the fuselage production process.
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