NDI of Interfaces in Coating Systems Using Digital Interferometry

• Tipo: Artigo em Revista Científica Internacional
• Data: 2000

Autores

Joaquim F. Silva Gomes (Autor) FEUP; J. M. Monteiro (Autor) Outra; Mário A. P. Vaz (Autor) FEUP

Revista

Título: Mechanics of Materials

Vol. 32 Nº 12

Páginas: 837-843

ISSN: 0167-6636

Editora: Elsevier

Indexação

ISI Web of Knowledge - 9 Citações

ISI Web of Science

Scopus - 16 Citações

INSPEC

COMPENDEX

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia mecânica

Outras Informações

ID Authenticus: P-000-YBW

DOI: 10.1016/S0167-6636(00)00050-8

Abstract (EN): This paper describes a new application of two laser interferometry techniques to the non-destructive inspection (NDI) of coated surfaces. The purpose is to detect interfacial disbond between the coating and the substrate. Debonding is detected by properly exciting the surface of the object under inspection in such a way that the interference fringe pattern is modi®ed rendering the disbond readily visible. The fringe patterns resulting from the associated images were captured using electronic speckle pattern interferometry (ESPI) and shearography. Image processing techniques are applied to enhance the detection and better de®nition of the debonded layer. Some results and discussions are presented to illustrate the applicability of these two optical techniques to thermal barrier coatings.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7