United States Department of Transportation
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Methods of Evaluation of the Fitness of Fiber Reinforced Composite Surfaces for Subsequent Adhesive Bonding
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2012-02-02
[PDF-2.05 MB]
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Abstract:With user safety in mind, the FAA has determined to coordinate and lead an effort to improve our understanding of current composite bonding methodology in the commercial aerospace and scientific community, with special emphasis on surface preparation and characterization prior to the bonding event. To develop nondestructive analytical techniques for application to the analysis of prebonded CF reinforced composite surfaces on the shop floor that can be used to support a decision to “go ahead" and bond the part or “stop "and have it re-cleaned, dried, or cured further prior to bonding. To integrate these techniques of analysis into the joint FAA/NIAR scarf repair project to develop insights into the influence of surface contaminants on the integrity of composite patches for very thick CF reinforced composite laminates to be used in primary load bearing applications in next generation aircraft.
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