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Guided Transient Waves in a Circular Annulus

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Abstract

Fatigue cracks have been found to initiate and grow in the radial direction in many annulus shaped components in aging helicopters. Detection of such radial cracks using conventional ultrasonic imaging techniques is rather ineffective. Recently, it has been proposed [1] that guided ultrasonic waves that propagate in the circumferential direction may be used for the detection of radial fatigue cracks in weep holes in airframes. Before such guided waves can be used effectively for detecting radial cracks in annulus components, their generation and propagation must be understood. The physics and mechanics of the wave fields must be carefully examined.

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Author information

Authors and Affiliations

  1. The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0405, USA

    Guoli Liu & Jianmin Qu

Authors
  1. Guoli Liu
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  2. Jianmin Qu
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Editor information

Editors and Affiliations

  1. Center for NDE Ames Laboratory (USDOE) and Department of Aerospace Engineering and Engineering Mechanics, Iowa State University, Ames, Iowa, USA

    Donald O. Thompson

  2. Center for NDE and Department of Aerospace Engineering and Engineering Mechanics, Iowa State University, Ames, Iowa, USA

    Dale E. Chimenti

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© 1998 Plenum Press, New York

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Liu, G., Qu, J. (1998). Guided Transient Waves in a Circular Annulus. In: Thompson, D.O., Chimenti, D.E. (eds) Review of Progress in Quantitative Nondestructive Evaluation. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-5339-7_19

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  • DOI: https://doi.org/10.1007/978-1-4615-5339-7_19

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4613-7436-7

  • Online ISBN: 978-1-4615-5339-7

  • eBook Packages: Springer Book Archive

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