Comparison of lightning protection performance of carbon/epoxy laminates with a non-metallic outer layer 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Journal of Reinforced Plastics and Composites
年/卷/期
2019 / 38 / 7
页码
301-313
ISSN号
0731-6844
作者单位
Mississippi State Univ, Dept Chem, Mississippi State, MS 39762 USA;Univ North Carolina Charlotte, Dept Elect & Comp Engn, Charlotte, NC USA;Univ Bristol, Dept Aerosp Engn, Adv Composites Collaborat Innovat & Sci, Queens Bldg, Bristol BS8 1TR, Avon, England;Texas A&M Univ, J Mike Walker Dept Mech 66, College Stn, TX 77843 USA;
作者
Pittman, Charles U., Jr.;Mazzola, Michael S.;Lee, Juhyeong;Lacy, Thomas E., Jr.;
摘要
This study shows how a lightning protection layer can be designed to effectively mitigate lightning damage in underlying composite structures. A parametric study was performed to characterize critical lightning protection layer properties that improve composite lightning damage resistance. Simulated 50 kA and 200 kA lightning strikes to pitch-based carbon fiber paper (PCFP)-protected AS4/3506 carbon/epoxy composites were considered in this study. The lightning protection characteristics of various PCFP outer layers were assessed by varying in-plane and through-thickness properties: electrical and thermal conductivities, and electrical and thermal gap conductances. The predicted matrix decomposition in the outermost AS4/3506 ply was significantly reduced by increasing the PCFP in-plane electrical conductivity. While predicted lightning damage decreased slightly with a decrease in thermal gap conductance, varying the electrical gap conductance and the in-plane and through-thickness thermal conductivities did not significantly affect the damage development. Among various PCFP properties, the PCFP in-plane electrical conductivity was the most critical factor in reducing thermal damage development (thus, protecting the underlying AS4/3506 laminate). This parametric study demonstrates that it may be possible to tailor lightweight non-metallic lightning protection layers as an effective alternative to traditional metallic projection layers.
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关键词/主题词
Lightning damage prediction;non-metallic lightning protection system;finite element parametric study;
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