FIBRE COMPOSITE MATERIAL INSPECTION METHOD
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United States of America Patent
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Jul 19, 2017
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Jul 27, 2016
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Abstract
A method of determining the position of a defect (32) within a fibre composite article (10) comprising a plurality of electrically conductive fibres (14) embedded within a non-conductive matrix (15). The method comprises providing an array of spaced electrical contacts (12a-k) in electrical contact with fibres (14) of the article (10); conducting an electrical current between two or more spaced electrical contacts (12a-k) of the array to determine a measured electrical profile of the article comprising measurements of at least one of electrical resistance, inductance, capacitance and self-resonant frequency of the article; and comparing the electrical profile with a nominal electrical profile representative of an undamaged article to determine the presence of a defect within the article.
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