Phase relation recovery for scanning laser Doppler vibrometry

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

Laser Doppler vibrometers are able to measure the velocity of a single point compared to a reference point by analyzing the Doppler shift of the laser beams. In many commercially available laser Doppler vibrometers, the laser point can be scanned to obtain an out-of-plane velocity profile of a surface. It is essential that the phase information of the velocities between points is measured as well to be able to fully reproduce the velocity profile of the surface. If this cannot be done by triggering on the actuation signal, the proposed two stage method can be used. This method measures the surface in two stages: one scan with the reference beam at a fixed point and one scan with the reference beam on a moving point. The algorithm in this article calculates the phase and reconstructs the velocity of each point. This is experimentally verified on three different micro structures. The postprocessing algorithm is not intensive in computing power.
Original languageEnglish
Pages (from-to)025208
Number of pages5
JournalMeasurement science and technology
Volume28
Issue number2
DOIs
Publication statusPublished - 12 Jan 2017

Fingerprint

Scanning
Recovery
Lasers
Doppler effect
Laser beams
Microstructure

Keywords

  • laser Doppler vibrometry
  • velocity profile
  • phase recovery
  • Mode shape
  • EWI-27680
  • LDV
  • IR-103282
  • movement reconstruction

Cite this

@article{3cf27035c945420ab87249b1fd7203e8,
title = "Phase relation recovery for scanning laser Doppler vibrometry",
abstract = "Laser Doppler vibrometers are able to measure the velocity of a single point compared to a reference point by analyzing the Doppler shift of the laser beams. In many commercially available laser Doppler vibrometers, the laser point can be scanned to obtain an out-of-plane velocity profile of a surface. It is essential that the phase information of the velocities between points is measured as well to be able to fully reproduce the velocity profile of the surface. If this cannot be done by triggering on the actuation signal, the proposed two stage method can be used. This method measures the surface in two stages: one scan with the reference beam at a fixed point and one scan with the reference beam on a moving point. The algorithm in this article calculates the phase and reconstructs the velocity of each point. This is experimentally verified on three different micro structures. The postprocessing algorithm is not intensive in computing power.",
keywords = "laser Doppler vibrometry, velocity profile, phase recovery, Mode shape, EWI-27680, LDV, IR-103282, movement reconstruction",
author = "Dennis Alveringh and Sanders, {Remco G.P.} and Wiegerink, {Remco J.} and L{\"o}tters, {Joost Conrad}",
year = "2017",
month = "1",
day = "12",
doi = "10.1088/1361-6501/aa53a3",
language = "English",
volume = "28",
pages = "025208",
journal = "Measurement science and technology",
issn = "0957-0233",
publisher = "IOP Publishing Ltd.",
number = "2",

}

Phase relation recovery for scanning laser Doppler vibrometry. / Alveringh, Dennis; Sanders, Remco G.P.; Wiegerink, Remco J.; Lötters, Joost Conrad.

In: Measurement science and technology, Vol. 28, No. 2, 12.01.2017, p. 025208.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Phase relation recovery for scanning laser Doppler vibrometry

AU - Alveringh, Dennis

AU - Sanders, Remco G.P.

AU - Wiegerink, Remco J.

AU - Lötters, Joost Conrad

PY - 2017/1/12

Y1 - 2017/1/12

N2 - Laser Doppler vibrometers are able to measure the velocity of a single point compared to a reference point by analyzing the Doppler shift of the laser beams. In many commercially available laser Doppler vibrometers, the laser point can be scanned to obtain an out-of-plane velocity profile of a surface. It is essential that the phase information of the velocities between points is measured as well to be able to fully reproduce the velocity profile of the surface. If this cannot be done by triggering on the actuation signal, the proposed two stage method can be used. This method measures the surface in two stages: one scan with the reference beam at a fixed point and one scan with the reference beam on a moving point. The algorithm in this article calculates the phase and reconstructs the velocity of each point. This is experimentally verified on three different micro structures. The postprocessing algorithm is not intensive in computing power.

AB - Laser Doppler vibrometers are able to measure the velocity of a single point compared to a reference point by analyzing the Doppler shift of the laser beams. In many commercially available laser Doppler vibrometers, the laser point can be scanned to obtain an out-of-plane velocity profile of a surface. It is essential that the phase information of the velocities between points is measured as well to be able to fully reproduce the velocity profile of the surface. If this cannot be done by triggering on the actuation signal, the proposed two stage method can be used. This method measures the surface in two stages: one scan with the reference beam at a fixed point and one scan with the reference beam on a moving point. The algorithm in this article calculates the phase and reconstructs the velocity of each point. This is experimentally verified on three different micro structures. The postprocessing algorithm is not intensive in computing power.

KW - laser Doppler vibrometry

KW - velocity profile

KW - phase recovery

KW - Mode shape

KW - EWI-27680

KW - LDV

KW - IR-103282

KW - movement reconstruction

U2 - 10.1088/1361-6501/aa53a3

DO - 10.1088/1361-6501/aa53a3

M3 - Article

VL - 28

SP - 025208

JO - Measurement science and technology

JF - Measurement science and technology

SN - 0957-0233

IS - 2

ER -