Phased laser diode array permits selective excitation of ultrasonic guided waves in coated bone-mimicking tubes

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dc.contributor.author Moilanen, Petro
dc.contributor.author Salmi, Ari
dc.contributor.author Kilappa, Vantte
dc.contributor.author Zhao, Zuomin
dc.contributor.author Timonen, Jussi
dc.contributor.author Haeggström, Edward
dc.date.accessioned 2019-12-11T16:11:02Z
dc.date.available 2019-12-11T16:11:02Z
dc.date.issued 2017-10-14
dc.identifier.citation Moilanen , P , Salmi , A , Kilappa , V , Zhao , Z , Timonen , J & Haeggström , E 2017 , ' Phased laser diode array permits selective excitation of ultrasonic guided waves in coated bone-mimicking tubes ' , Journal of Applied Physics , vol. 122 , no. 14 , 144901 . https://doi.org/10.1063/1.5007224
dc.identifier.other PURE: 92791690
dc.identifier.other PURE UUID: 387d046d-2007-40ba-b78b-277272bf94bb
dc.identifier.other WOS: 000413038500026
dc.identifier.other Scopus: 85031311276
dc.identifier.other ORCID: /0000-0001-8549-6356/work/39206204
dc.identifier.uri http://hdl.handle.net/10138/308105
dc.description.abstract This paper validates simulation predictions, which state that specific modes could be enhanced in quantitative ultrasonic bone testing. Tunable selection of ultrasonic guided wave excitation is useful in non-destructive testing since it permits the mediation of energy into diagnostically useful modes while reducing the energy mediated into disturbing contributions. For instance, it is often challenging to distinguish and extract the useful modes from ultrasound signals measured in bone covered by a soft tissue. We show that a laser diode array can selectively excite ultrasound in bone mimicking phantoms. A fiber-coupled diode array (4 elements) illuminated two solid tubes (2-3mm wall thickness) embraced by an opaque soft-tissue mimicking elastomer coating (5mm thick). A predetermined time delay matching the selected mode and frequency was employed between the outputs of the elements. The generated ultrasound was detected by a 215 kHz piezo receiver. Our results suggest that this array reduces the disturbances caused by the elastomer cover and so pave way to permit non-contacting in vivo guided wave ultrasound assessment of human bones. The implementation is small, inexpensive, and robust in comparison with the conventional pulsed lasers. Published by AIP Publishing. en
dc.format.extent 6
dc.language.iso eng
dc.relation.ispartof Journal of Applied Physics
dc.rights cc_by_nc_sa
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 114 Physical sciences
dc.title Phased laser diode array permits selective excitation of ultrasonic guided waves in coated bone-mimicking tubes en
dc.type Article
dc.contributor.organization Department of Physics
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1063/1.5007224
dc.relation.issn 0021-8979
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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