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Title: OPTIMIZING A PORTABLE MICROWAVE INTERFERENCE SCANNING SYSTEM FOR NONDESTRUCTIVE TESTING OF MULTI-LAYERED DIELECTRIC MATERIALS

The projected microwave energy pattern, wave guide geometry, positioning methods and process variables have been optimized for use of a portable, non-contact, lap-top computer-controlled microwave interference scanning system on multi-layered dielectric materials. The system can be used in situ with one-sided access and has demonstrated capability of damage detection on composite ceramic armor. Specimens used for validation included specially fabricated surrogates, and ballistic impact-damaged specimens. Microwave data results were corroborated with high resolution direct-digital x-ray imaging. Microwave interference scanning detects cracks, laminar features and material properties variations. This paper presents the details of the system, the optimization steps and discusses results obtained.
Authors:
;  [1] ;  [2] ;  [3]
  1. Evisive, Inc., Baton Rouge, LA USA (United States)
  2. Argonne National Laboratory, Argonne, IL USA (United States)
  3. Army Research Laboratory, Aberdeen Proving Ground, MD (United States)
Publication Date:
OSTI Identifier:
21371006
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1211; Journal Issue: 1; Conference: Review of progress in quantitative nondestructive evaluation, Kingston, RI (United States), 26-31 Jul 2009; Other Information: DOI: 10.1063/1.3362209; (c) 2010 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CERAMICS; COMPOSITE MATERIALS; CRACKS; DAMAGE; DETECTION; DIELECTRIC MATERIALS; GLASS; INTERFERENCE; LAYERS; MICROWAVE RADIATION; NONDESTRUCTIVE TESTING; PORTABLE EQUIPMENT; RESOLUTION; VARIATIONS; X RADIATION ELECTROMAGNETIC RADIATION; EQUIPMENT; IONIZING RADIATIONS; MATERIALS; MATERIALS TESTING; RADIATIONS; TESTING