Guided Wave Tuning Principles for Defect Detection in Tubing

Hyeon Jae Shin, Joseph Lawrence Rose

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

Dispersion diagrams for longitudinal modes and several flexural modes are given. A partial loading oblique incidence technique was introduced for non-axisymmetric guided wave generation. Acoustic fields for partially loaded generation of guided waves were obtained along a sample Inconel steam generator tube surface. The axial field and the circumferential fields were non uniform. Even though the acoustic field was much more complicated than in the case of axisymmetric modes, the study of non-axisymmetric mode cannot be avoided; excitation of a single symmetric mode is often difficult due to limited access and transducer efficiency and there is also mode conversion after scattering from defects. For 100% inspection coverage of tubing and piping, three dimensional tuning (distance, frequency, and incident angle tuning), was employed. A single combination of incident angle, position, and frequency may miss defects in "blind spots". However, complete inspection coverage of a whole cross sectional area over a certain distance of tubing was successfully demonstrated through a multi crack detection experiment by using the three dimensional tuning concepts. Also, the use of non-axisymmetric guided waves for a large distance inspection capability was successfully demonstrated.

Original languageEnglish (US)
Pages (from-to)27-36
Number of pages10
JournalJournal of Nondestructive Evaluation
Volume17
Issue number1
DOIs
StatePublished - Jan 1 1998

Fingerprint

Guided electromagnetic wave propagation
Tubing
Tuning
Inspection
Acoustic fields
Crack detection
Defects
Steam generators
Transducers
Scattering
Defect detection
Experiments

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Shin, Hyeon Jae ; Rose, Joseph Lawrence. / Guided Wave Tuning Principles for Defect Detection in Tubing. In: Journal of Nondestructive Evaluation. 1998 ; Vol. 17, No. 1. pp. 27-36.
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Guided Wave Tuning Principles for Defect Detection in Tubing. / Shin, Hyeon Jae; Rose, Joseph Lawrence.

In: Journal of Nondestructive Evaluation, Vol. 17, No. 1, 01.01.1998, p. 27-36.

Research output: Contribution to journalArticle

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