Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
Pavement diagnostics using flexural standing waves. / Kolesnikov, Y.; Fedin, K.; Ngomayezwe, L.
EAGE-GSM 2nd Asia Pacific Meeting on Near Surface Geoscience and Engineering. European Association of Geoscientists and Engineers, EAGE, 2019. (EAGE-GSM 2nd Asia Pacific Meeting on Near Surface Geoscience and Engineering).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
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TY - GEN
T1 - Pavement diagnostics using flexural standing waves
AU - Kolesnikov, Y.
AU - Fedin, K.
AU - Ngomayezwe, L.
PY - 2019/4/1
Y1 - 2019/4/1
N2 - To ensure road safety, periodic monitoring of road surfaces' quality and conditions is necessary. Lately, near-surface geophysical methods have gained prominence in such studies. This article presents field experiments' results that demonstrate the possibilities of cavities detection under a rigid pavement using flexural standing waves. Accumulation of numerous amplitude spectra of acoustic noise records was used to study standing waves arising in the interior of the pavement. It is shown, joint visualization of the averaged spectra obtained by profile observations over a cavity under pavement allows one to identify several flexural standing wave modes by alternation nodes and antinodes along profile. Amplitude distribution map of one of the flexural standing wave modes over a cavity (gully) under pavement was constructed. At a qualitative level, this distribution is consistent with computer simulation results using the finite element method. The fact that flexural standing waves are formed under acoustic noise influence in some part of pavement indicates absence of rigid contact at its lower boundary. Thus, horizontal cavity dimensions can be estimated from the area size on which flexural standing waves are formed.
AB - To ensure road safety, periodic monitoring of road surfaces' quality and conditions is necessary. Lately, near-surface geophysical methods have gained prominence in such studies. This article presents field experiments' results that demonstrate the possibilities of cavities detection under a rigid pavement using flexural standing waves. Accumulation of numerous amplitude spectra of acoustic noise records was used to study standing waves arising in the interior of the pavement. It is shown, joint visualization of the averaged spectra obtained by profile observations over a cavity under pavement allows one to identify several flexural standing wave modes by alternation nodes and antinodes along profile. Amplitude distribution map of one of the flexural standing wave modes over a cavity (gully) under pavement was constructed. At a qualitative level, this distribution is consistent with computer simulation results using the finite element method. The fact that flexural standing waves are formed under acoustic noise influence in some part of pavement indicates absence of rigid contact at its lower boundary. Thus, horizontal cavity dimensions can be estimated from the area size on which flexural standing waves are formed.
UR - http://www.scopus.com/inward/record.url?scp=85088066981&partnerID=8YFLogxK
U2 - 10.3997/2214-4609.201900432
DO - 10.3997/2214-4609.201900432
M3 - Conference contribution
AN - SCOPUS:85088066981
T3 - EAGE-GSM 2nd Asia Pacific Meeting on Near Surface Geoscience and Engineering
BT - EAGE-GSM 2nd Asia Pacific Meeting on Near Surface Geoscience and Engineering
PB - European Association of Geoscientists and Engineers, EAGE
T2 - EAGE-GSM 2nd Asia Pacific Meeting on Near Surface Geoscience and Engineering
Y2 - 22 April 2019 through 26 April 2019
ER -
ID: 24094355