Title

Near-Field Microwave Nondestructive Distinction between Surface Height Variations and Defects in Thick Sandwich Composites using Standoff Distance Optimization

Abstract

For this study two different thick composite specimens were used, one with disbond (due to an embedded mylar sheet) having also generating some level of surface height variation in the specimen and the other subjected to an impact damage. An open-ended rectangular waveguide sensor was used to detect and distinguish between the defects and the surface height they may have produced in the specimens. Microwave images of sample areas were produced for these optimization exercises effectively showing the surface height variations or the presence of mylar sheet, respectively.

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Composite Materials; Imaging Techniques; Microwaves; Rectangular Waveguides; Disbond; Impact Damage; Nondestructive Examination

International Standard Serial Number (ISSN)

1058-9759

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1997 Taylor & Francis, All rights reserved.

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