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Article: Characterizing bond breakages in cemented sands using a MEMS accelerometer

TitleCharacterizing bond breakages in cemented sands using a MEMS accelerometer
Authors
KeywordsAcoustic emission
Bond breakage
Cemented sands
MEMS accelerometer
Triaxial test
Issue Date2009
PublisherA S T M International. The Journal's web site is located at http://journalsip.astm.org/JOURNALS/GEOTECH/gtj%5Fhome.html
Citation
Geotechnical Testing Journal, 2009, v. 32 n. 2, p. 186-195 How to Cite?
AbstractIn this study, a raicroelectromechanical systems (MEMS) accelerometer, MEMS A (1-3 kHz), and a commercially available piezoelectric acoustic emission (AE) sensor, PZT (125-750 kHz), were used to capture AE responses in uncemented and cemented sands during triaxial compression tests. The AE rates measured in the cemented sands by both sensors demonstrated a similar trend and showed a strong resemblance to the stress-strain response. The bond breakages and the associated AE activities were mild at small strains and increased afterwards to initiate yielding. After the peak stress, shear banding gradually formed and the AE rate distinctly dropped. These observations suggest that a MEMS accelerometer can function as an effective AE sensor to detect the bond-breakage process in cemented sands. In addition, a PZT is more sensitive to the AE detection for cemented sands but a MEMSA starts earlier to capture AE and also continue to capture AE from the shear band at large strains while the PZT only measures a few or no AE activities. Copyright © 2009 by ASTM International.
Persistent Identifierhttp://hdl.handle.net/10722/91215
ISSN
2015 Impact Factor: 0.663
2015 SCImago Journal Rankings: 1.289
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, YHen_HK
dc.contributor.authorMa, CHen_HK
dc.contributor.authorYan, WMen_HK
dc.date.accessioned2010-09-17T10:15:01Z-
dc.date.available2010-09-17T10:15:01Z-
dc.date.issued2009en_HK
dc.identifier.citationGeotechnical Testing Journal, 2009, v. 32 n. 2, p. 186-195en_HK
dc.identifier.issn0149-6115en_HK
dc.identifier.urihttp://hdl.handle.net/10722/91215-
dc.description.abstractIn this study, a raicroelectromechanical systems (MEMS) accelerometer, MEMS A (1-3 kHz), and a commercially available piezoelectric acoustic emission (AE) sensor, PZT (125-750 kHz), were used to capture AE responses in uncemented and cemented sands during triaxial compression tests. The AE rates measured in the cemented sands by both sensors demonstrated a similar trend and showed a strong resemblance to the stress-strain response. The bond breakages and the associated AE activities were mild at small strains and increased afterwards to initiate yielding. After the peak stress, shear banding gradually formed and the AE rate distinctly dropped. These observations suggest that a MEMS accelerometer can function as an effective AE sensor to detect the bond-breakage process in cemented sands. In addition, a PZT is more sensitive to the AE detection for cemented sands but a MEMSA starts earlier to capture AE and also continue to capture AE from the shear band at large strains while the PZT only measures a few or no AE activities. Copyright © 2009 by ASTM International.en_HK
dc.languageengen_HK
dc.publisherA S T M International. The Journal's web site is located at http://journalsip.astm.org/JOURNALS/GEOTECH/gtj%5Fhome.htmlen_HK
dc.relation.ispartofGeotechnical Testing Journalen_HK
dc.subjectAcoustic emissionen_HK
dc.subjectBond breakageen_HK
dc.subjectCemented sandsen_HK
dc.subjectMEMS accelerometeren_HK
dc.subjectTriaxial testen_HK
dc.titleCharacterizing bond breakages in cemented sands using a MEMS accelerometeren_HK
dc.typeArticleen_HK
dc.identifier.emailYan, WM:ryanyan@hku.hken_HK
dc.identifier.authorityYan, WM=rp01400en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-73449127590en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-73449127590&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume32en_HK
dc.identifier.issue2en_HK
dc.identifier.spage186en_HK
dc.identifier.epage195en_HK
dc.identifier.isiWOS:000264233500010-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridWang, YH=35273635000en_HK
dc.identifier.scopusauthoridMa, CH=35194417300en_HK
dc.identifier.scopusauthoridYan, WM=35369531200en_HK

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