Imaging of surface-breaking concrete cracks using transient elastic waves
Resource
NDT & E International 29 (5): 323-331
Journal
NDT & E International
Journal Volume
29
Journal Issue
5
Pages
323-331
Date Issued
1996
Date
1996
Author(s)
Abstract
This study develops an imaging method to determine the depth and inclination of a surface-breaking crack in a concrete structure. The migration method in reflection seismology is adopted to process the surface response of the concrete structure recorded in a transient elastic wave test. An image is constructed that shows the location of the crack tip. The response curves are processed further by the quadratic interpolation method to determine the location of the crack tip. Then, a solid line is superposed on the image to represent the crack. Numerical examples are presented to illustrate the effectiveness of the proposed method to display cracks of various dip angles and lengths. Two model tests verify that this method can detect real cracks successfully. Copyright © 1996 Elsevier Science Ltd.
Subjects
Concrete; Surface-breaking crack; Transient waves
Other Subjects
Acoustic signal processing; Concrete construction; Concrete testing; Cracks; Elastic waves; Imaging techniques; Interpolation; Seismology; Surface waves; Surfaces; Elastic wave test; Migration method; Quadratic interpolation; Reflection seismology; Surface breaking cracks; Transient waves; Nondestructive examination
Type
journal article
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