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Laser detection of elastic waves diffraction by the crack’s edge

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Title: Laser detection of elastic waves diffraction by the crack’s edge
Authors: Rinkevich, A.B. rin@imp.uran.ru, Perov, D.V.1 peroff@imp.uran.ru, Korkh, Yu V.1 julia@imp.uran.ru
Source: Applied Acoustics. Aug2012, Vol. 73 Issue 8, p803-808. 6p.
Subjects: Optical radar, Elastic wave diffraction, Sound waves, Ultrasonic waves, Laser interferometers, Mathematical models, Photographs
Abstract: Abstract: Diffraction effects and features of acoustic wave propagation in elastic media with the surface-breaking microcrack were investigated in detail for the pulse probing signals. The crack’s plane was oriented along the direction of longitudinal ultrasonic wave incidence in such a way that the detection of the crack with such an unfavorable spatial location was difficult by means of traditional acoustic techniques. Using laser Doppler interferometer a set of instantaneous pictures of acoustic field on the specimen’s surface, corresponding to the different moments of time was obtained. This allowed us to investigate and visualize the diffraction effects of acoustic field in dynamics. Using numerical modeling of diffraction processes of acoustic waves on the crack’s edge and top for pulse signals the origin of V-like structures on the snapshots of acoustic fields was explained and analyzed. [Copyright &y& Elsevier]
Copyright of Applied Acoustics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 75170085
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Laser detection of elastic waves diffraction by the crack’s edge
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  Data: <searchLink fieldCode="AR" term="%22Rinkevich%2C+A%2EB%2E%22">Rinkevich, A.B.</searchLink><i> rin@imp.uran.ru</i><br /><searchLink fieldCode="AR" term="%22Perov%2C+D%2EV%2E%22">Perov, D.V.</searchLink><relatesTo>1</relatesTo><i> peroff@imp.uran.ru</i><br /><searchLink fieldCode="AR" term="%22Korkh%2C+Yu+V%2E%22">Korkh, Yu V.</searchLink><relatesTo>1</relatesTo><i> julia@imp.uran.ru</i>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Acoustics%22">Applied Acoustics</searchLink>. Aug2012, Vol. 73 Issue 8, p803-808. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Optical+radar%22">Optical radar</searchLink><br /><searchLink fieldCode="DE" term="%22Elastic+wave+diffraction%22">Elastic wave diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22Sound+waves%22">Sound waves</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonic+waves%22">Ultrasonic waves</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+interferometers%22">Laser interferometers</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models%22">Mathematical models</searchLink><br /><searchLink fieldCode="DE" term="%22Photographs%22">Photographs</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: Diffraction effects and features of acoustic wave propagation in elastic media with the surface-breaking microcrack were investigated in detail for the pulse probing signals. The crack’s plane was oriented along the direction of longitudinal ultrasonic wave incidence in such a way that the detection of the crack with such an unfavorable spatial location was difficult by means of traditional acoustic techniques. Using laser Doppler interferometer a set of instantaneous pictures of acoustic field on the specimen’s surface, corresponding to the different moments of time was obtained. This allowed us to investigate and visualize the diffraction effects of acoustic field in dynamics. Using numerical modeling of diffraction processes of acoustic waves on the crack’s edge and top for pulse signals the origin of V-like structures on the snapshots of acoustic fields was explained and analyzed. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Applied Acoustics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.apacoust.2012.02.019
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      – Code: eng
        Text: English
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      – SubjectFull: Optical radar
        Type: general
      – SubjectFull: Elastic wave diffraction
        Type: general
      – SubjectFull: Sound waves
        Type: general
      – SubjectFull: Ultrasonic waves
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      – SubjectFull: Laser interferometers
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      – SubjectFull: Mathematical models
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      – SubjectFull: Photographs
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      – TitleFull: Laser detection of elastic waves diffraction by the crack’s edge
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              M: 08
              Text: Aug2012
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              Y: 2012
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