Beam-to-mode conversion in an aluminum plate for ultrasonic NDE applications

I-Tai Lu, L. B. Felsen, J. M. Klosner

Research output: Contribution to journalArticle

Abstract

In a multilayer elastic plate, weak debonding in the horizontal direction parallel to the plate boundaries is insensitive to ultrasonic compressional (P) waves impinging perpendicularly, and can therefore not be detected by conventional vertically oriented reflection schemes. One of the methods for generating along the flaw line shearing stresses, to which the flaw responds, is to orient the input beam obliquely. Unlike vertically impinging beams, multiply reflected oblique beams eventually are converted into guided modes. The horizontal ranges over which the field in the unflawed plate is beam-like or mode-like must be well understood for selection of a diagnostic NDE scheme with 'good' features for detection and identification.

Original languageEnglish (US)
Pages (from-to)236-240
Number of pages5
JournalJournal of Engineering Materials and Technology, Transactions of the ASME
Volume112
Issue number2
StatePublished - Apr 1990

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Ultrasonic applications
Aluminum
ultrasonics
aluminum
Defects
Debonding
Shearing
Multilayers
Ultrasonics
elastic plates
defects
P waves
shear stress

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Beam-to-mode conversion in an aluminum plate for ultrasonic NDE applications. / Lu, I-Tai; Felsen, L. B.; Klosner, J. M.

In: Journal of Engineering Materials and Technology, Transactions of the ASME, Vol. 112, No. 2, 04.1990, p. 236-240.

Research output: Contribution to journalArticle

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