Please use this identifier to cite or link to this item:
https://doi.org/10.1088/0957-0233/12/3/311
DC Field | Value | |
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dc.title | Measurement of a microphone membrane deflection profile using an optical fibre and wedge fringe projection | |
dc.contributor.author | Tay, C.J. | |
dc.contributor.author | Quan, C. | |
dc.contributor.author | Wang, S.H. | |
dc.contributor.author | Shang, H.M. | |
dc.contributor.author | Chan, K.C. | |
dc.date.accessioned | 2014-06-17T06:26:14Z | |
dc.date.available | 2014-06-17T06:26:14Z | |
dc.date.issued | 2001-03 | |
dc.identifier.citation | Tay, C.J., Quan, C., Wang, S.H., Shang, H.M., Chan, K.C. (2001-03). Measurement of a microphone membrane deflection profile using an optical fibre and wedge fringe projection. Measurement Science and Technology 12 (3) : 320-326. ScholarBank@NUS Repository. https://doi.org/10.1088/0957-0233/12/3/311 | |
dc.identifier.issn | 09570233 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/60692 | |
dc.description.abstract | A new technique for determining the deformation of the membrane in a microphone is described. Using an optical fibre and an optical wedge a sinusoidal fringe pattern with a pitch of the order of micrometres can be readily generated. Due to the laser interference in a perfect common path the proposed fringe projector is compact and the stable fringe pattern from the optical wedge can be projected onto the test surface. A four frame phase-shifting technique is employed for phase measurement. The phase shifting is carried out by translating the optical fibre mounted on a translation stage. The fringe pattern projected onto the test surface is captured by a CCD camera mounted on a long distance microscope. As demonstrated by the experimental results the proposed set-up is capable of measuring deformations of the membrane of the microphone to sub-micrometre levels. | |
dc.source | Scopus | |
dc.subject | Fringe projection | |
dc.subject | Microphone | |
dc.subject | Non-destruction testing | |
dc.subject | Optical fibre | |
dc.subject | Optical wedge | |
dc.subject | Phase-shifting technique | |
dc.type | Article | |
dc.contributor.department | MECHANICAL ENGINEERING | |
dc.description.doi | 10.1088/0957-0233/12/3/311 | |
dc.description.sourcetitle | Measurement Science and Technology | |
dc.description.volume | 12 | |
dc.description.issue | 3 | |
dc.description.page | 320-326 | |
dc.description.coden | MSTCE | |
dc.identifier.isiut | 000167759900013 | |
Appears in Collections: | Staff Publications |
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