STRUCTURE MADE OF COMPOSITE MATERIAL PROTECTED AGAINST THE EFFECTS OF LIGHTNING
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United States of America Patent
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Issued Date -
May 3, 2012
app pub date -
Jan 7, 2010
filing date -
Jan 9, 2009
priority date (Note) -
Abandoned
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Abstract
A part (1) includes a structural portion made of an electrically insulating or low-conductive composite material (2) and includes, on a surface (11) of the structural portion likely to be subjected to lightning impacts (10), a metallization layer (30) covered with an electrically insulating protection paint (4). The metallization layer includes a layer of a first electrically conductive metal material (31), referred to as HVT material, and includes at least one second electrically conductive metal material (32), referred to as LVT material, having a vaporization temperature Θl substantially lower than the vaporization temperature Θh of the first electrically conductive HVT metal material. A lightning impact results in the vaporization of the LVT material and the removal of the paint on a surface larger than that in which the HVT material is vaporized, and therefore exposes or lifts a portion of the metallization around the lightning impact point, thereby promoting the anchoring of the lightning arc base.
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