Title

Embedded Alumina Nanoparticles As Diagnostic Coatings For Structures

Abstract

Embedded alumina nanoparticles in the form of a nanoparticle-epoxy coating were investigated to determine the diagnostic potential of using an alumina coating in conjunction with piezospectroscopy to measure the stresses in a metallic substrate during loading. A coupon of Al2024 was coated with a thin layer of the alumina nanoparticle-epoxy composite and then tested in tension. Photo-stimulated luminescence spectroscopy performed during the tensile test was used to determine the coating's ability to capture the stress-induced shifts of the R-line peaks resulting from applied tensile loads. The results indicate the ability to capture luminescence information from coatings, thus, illustrating the potential use of coatings as a stress sensing diagnostic tool on common aerospace structures. The limited range of peak shifts detected at the various loads indicates a possible reduction of load transfer between the substrate and coating that needs to be addressed through improved adhesion.

Publication Date

7-23-2012

Publication Title

International SAMPE Technical Conference

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

84863963786 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84863963786

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