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A framework for inversion of wavefield spectra in seismic non-destructive testing of pavements

Rydén, Nils LU ; Ulriksen, Peter LU and Park, C B (2004) 2nd International Conference on Site Characterization (ISC-2) In Geotechnical and Geophysical Site Characterization p.563-570
Abstract
A method for the inversion of wavefield spectra in non-destructive testing of pavements is outlined. Data acquisition and processing is based on the Multichannel Analysis of Surface Waves (MASW) method. The inversion of a vertical-shear wave velocity profile is conducted on the full wave field spectrum using the Fast Simulated Annealing (FSA) algorithm. This procedure avoids dealing with discrete dispersion curves and mode identification for the inversion of surface wave data. The viscoelastic properties of the asphalt layer are included in the forward model, resulting in an inverted mastercurve, showing the asphalt stiffness as a function of frequency. The outlined approach is demonstrated on both synthetic and field data. The main... (More)
A method for the inversion of wavefield spectra in non-destructive testing of pavements is outlined. Data acquisition and processing is based on the Multichannel Analysis of Surface Waves (MASW) method. The inversion of a vertical-shear wave velocity profile is conducted on the full wave field spectrum using the Fast Simulated Annealing (FSA) algorithm. This procedure avoids dealing with discrete dispersion curves and mode identification for the inversion of surface wave data. The viscoelastic properties of the asphalt layer are included in the forward model, resulting in an inverted mastercurve, showing the asphalt stiffness as a function of frequency. The outlined approach is demonstrated on both synthetic and field data. The main benefit is that the raw field data can be automatically processed and inverted without any subjective user input, while properly accounting for the interference of different modes and types of waves. The main disadvantage at this point of development is an extensive (several hours) computational time for the inversion process. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
MASW, simulated annealing, inversion, pavements, non-destructive testing, surface waves, guided waves
in
Geotechnical and Geophysical Site Characterization
pages
563 - 570
publisher
Millpress
conference name
2nd International Conference on Site Characterization (ISC-2)
external identifiers
  • WOS:000239478800052
ISBN
978-90-5966-009-0
language
English
LU publication?
yes
id
ca902bd8-c9e0-4008-a90c-d88881c117dd (old id 1410652)
date added to LUP
2009-05-28 15:18:14
date last changed
2016-04-16 08:19:26
@misc{ca902bd8-c9e0-4008-a90c-d88881c117dd,
  abstract     = {A method for the inversion of wavefield spectra in non-destructive testing of pavements is outlined. Data acquisition and processing is based on the Multichannel Analysis of Surface Waves (MASW) method. The inversion of a vertical-shear wave velocity profile is conducted on the full wave field spectrum using the Fast Simulated Annealing (FSA) algorithm. This procedure avoids dealing with discrete dispersion curves and mode identification for the inversion of surface wave data. The viscoelastic properties of the asphalt layer are included in the forward model, resulting in an inverted mastercurve, showing the asphalt stiffness as a function of frequency. The outlined approach is demonstrated on both synthetic and field data. The main benefit is that the raw field data can be automatically processed and inverted without any subjective user input, while properly accounting for the interference of different modes and types of waves. The main disadvantage at this point of development is an extensive (several hours) computational time for the inversion process.},
  author       = {Rydén, Nils and Ulriksen, Peter and Park, C B},
  isbn         = {978-90-5966-009-0},
  keyword      = {MASW,simulated annealing,inversion,pavements,non-destructive testing,surface waves,guided waves},
  language     = {eng},
  pages        = {563--570},
  publisher    = {ARRAY(0xb57e9c8)},
  series       = {Geotechnical and Geophysical Site Characterization},
  title        = {A framework for inversion of wavefield spectra in seismic non-destructive testing of pavements},
  year         = {2004},
}