Abstract

This article describes an experimental procedure for improving the detectability of small defects in composite laminates based on modifications to the total focusing method (TFM) of processing ultrasonic array data to form an image. The TFM is modified to include the directional dependence of ultrasonic velocity. The maximum aperture angle is limited and a Gaussian frequency-domain filter is applied prior to processing. The parameters of maximum aperture angle, filter centre frequency and filter bandwidth are optimized.

Original languageEnglish
Title of host publicationREVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 31A AND 31B
EditorsDO Thompson, DE Chimenti
Place of PublicationMELVILLE
PublisherAmerican Institute of Physics (AIP)
Pages897-904
Number of pages8
ISBN (Print)978-0-7354-1013-8
DOIs
Publication statusPublished - 2012
Event38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2011) - Burlington, VT, United States
Duration: 17 Jul 201122 Jul 2011
Conference number: 38

Conference

Conference38th Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE 2011)
Abbreviated titleQNDE 2011
CountryUnited States
CityBurlington, VT
Period17/07/1122/07/11

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