Additively Manufactured Component Having Localized Density Variations for Part Identification
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United States of America Patent
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Issued Date -
Oct 11, 2018
app pub date -
Apr 5, 2017
filing date -
Apr 5, 2017
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Abstract
A method for additively manufacturing a component is provided. The method includes additively manufacturing an identifying region of the component including localized density variations that define a component identifier of the component. The localized density variations may be formed using two materials having different densities, by manipulating an energy source to underexpose or overexpose a layer of powder, or by laser shock peening the component during the additive manufacturing process. This method generates a three-dimensional unique component identifier that may be invisible to the naked eye and detectable only through interrogation by a scanning device, such as an x-ray computed tomography device. The component identifier may be stored in a database as a reference identifier and may be used for authenticating components.
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