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A Short-Bar Combined-Wave Method for Wave Propagation Coefficient Determination.

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Title: A Short-Bar Combined-Wave Method for Wave Propagation Coefficient Determination.
Authors: Fan, L. F.1 (AUTHOR) fanlifeng@bjut.edu.cn, Yang, Q. H.1 (AUTHOR), Wang, M.1 (AUTHOR), Du, X. L.1 (AUTHOR)
Source: Rock Mechanics & Rock Engineering. Mar2024, Vol. 57 Issue 3, p1815-1823. 9p.
Subjects: Impact testing, Stress waves, Wavenumber, Attenuation coefficients, Theory of wave motion, Pendulums
Abstract: A combined-wave method which can significantly reduce the length of the rock bar was proposed for investigating the stress wave propagation through micro-defected rock mass. A series of short-bar pendulum impact tests were carried out to obtain the combined waves. Subsequently, wave propagation coefficients (e.g. the attenuation coefficient and wave number) were derived based on the present combined-wave method. Finally, the present combined-wave method was validated using the traditional separated-wave method based on a series of long-bar pendulum impact tests. The results show that the wave propagation coefficients obtained by the present combined-wave method using a 0.6 m bar agree well with those obtained by the traditional separated-wave method using a 1.2 m bar. The present combined-wave method overcomes the disadvantage of the traditional separated-wave method, which requires a long bar to prevent wave superposition. Highlights: A series of short-bar pendulum impact tests were conducted. A combined-wave method based on short-bar pendulum impact tests was proposed. The present combined-wave method was validated. Wave propagation coefficient can be determined by the present method efficiently. [ABSTRACT FROM AUTHOR]
Copyright of Rock Mechanics & Rock Engineering is the property of Springer Nature 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.)
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  Data: A Short-Bar Combined-Wave Method for Wave Propagation Coefficient Determination.
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  Data: <searchLink fieldCode="JN" term="%22Rock+Mechanics+%26+Rock+Engineering%22">Rock Mechanics & Rock Engineering</searchLink>. Mar2024, Vol. 57 Issue 3, p1815-1823. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Impact+testing%22">Impact testing</searchLink><br /><searchLink fieldCode="DE" term="%22Stress+waves%22">Stress waves</searchLink><br /><searchLink fieldCode="DE" term="%22Wavenumber%22">Wavenumber</searchLink><br /><searchLink fieldCode="DE" term="%22Attenuation+coefficients%22">Attenuation coefficients</searchLink><br /><searchLink fieldCode="DE" term="%22Theory+of+wave+motion%22">Theory of wave motion</searchLink><br /><searchLink fieldCode="DE" term="%22Pendulums%22">Pendulums</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: A combined-wave method which can significantly reduce the length of the rock bar was proposed for investigating the stress wave propagation through micro-defected rock mass. A series of short-bar pendulum impact tests were carried out to obtain the combined waves. Subsequently, wave propagation coefficients (e.g. the attenuation coefficient and wave number) were derived based on the present combined-wave method. Finally, the present combined-wave method was validated using the traditional separated-wave method based on a series of long-bar pendulum impact tests. The results show that the wave propagation coefficients obtained by the present combined-wave method using a 0.6 m bar agree well with those obtained by the traditional separated-wave method using a 1.2 m bar. The present combined-wave method overcomes the disadvantage of the traditional separated-wave method, which requires a long bar to prevent wave superposition. Highlights: A series of short-bar pendulum impact tests were conducted. A combined-wave method based on short-bar pendulum impact tests was proposed. The present combined-wave method was validated. Wave propagation coefficient can be determined by the present method efficiently. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Rock Mechanics & Rock Engineering is the property of Springer Nature 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: 10.1007/s00603-023-03647-y
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      – Code: eng
        Text: English
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      – SubjectFull: Impact testing
        Type: general
      – SubjectFull: Stress waves
        Type: general
      – SubjectFull: Wavenumber
        Type: general
      – SubjectFull: Attenuation coefficients
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      – SubjectFull: Theory of wave motion
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      – SubjectFull: Pendulums
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      – TitleFull: A Short-Bar Combined-Wave Method for Wave Propagation Coefficient Determination.
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              Text: Mar2024
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