Contrast and sensitivity of the vibration fringes in time-averaged electronic speckle-pattern interferometry: Effect of variations of force level

Wai On Wong; K. T. Chan; T. P. Leung

doi:10.1016/S0030-3992(96)00070-9

Contrast and sensitivity of the vibration fringes in time-averaged electronic speckle-pattern interferometry: Effect of variations of force level

Wai On Wong, K. T. Chan, T. P. Leung

Research output: Journal article publication › Journal article › Academic research › peer-review

10 Citations (Scopus)

Abstract

The time averaged frame subtraction technique is improved by subtracting two Bessel fringe patterns at two different force levels. The technique enables significant enhancement of fringe contrast and increased measurement sensitivity. The contrast and sensitivity of the fringes obtained at different force ratios are investigated. Both theoretical and experimental results are presented.

Original language	English
Pages (from-to)	179-185
Number of pages	7
Journal	Optics and Laser Technology
Volume	29
Issue number	4
DOIs	https://doi.org/10.1016/S0030-3992(96)00070-9
Publication status	Published - 1 Jan 1997

Keywords

Electronic speckle pattern interferometry
Mode shape
Vibration analysis

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1016/S0030-3992(96)00070-9

Cite this

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abstract = "The time averaged frame subtraction technique is improved by subtracting two Bessel fringe patterns at two different force levels. The technique enables significant enhancement of fringe contrast and increased measurement sensitivity. The contrast and sensitivity of the fringes obtained at different force ratios are investigated. Both theoretical and experimental results are presented.",

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AU - Chan, K. T.

AU - Leung, T. P.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - The time averaged frame subtraction technique is improved by subtracting two Bessel fringe patterns at two different force levels. The technique enables significant enhancement of fringe contrast and increased measurement sensitivity. The contrast and sensitivity of the fringes obtained at different force ratios are investigated. Both theoretical and experimental results are presented.

AB - The time averaged frame subtraction technique is improved by subtracting two Bessel fringe patterns at two different force levels. The technique enables significant enhancement of fringe contrast and increased measurement sensitivity. The contrast and sensitivity of the fringes obtained at different force ratios are investigated. Both theoretical and experimental results are presented.

KW - Electronic speckle pattern interferometry

KW - Mode shape

KW - Vibration analysis

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U2 - 10.1016/S0030-3992(96)00070-9

DO - 10.1016/S0030-3992(96)00070-9

M3 - Journal article

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VL - 29

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EP - 185

JO - Optics and Laser Technology

JF - Optics and Laser Technology

IS - 4

ER -

Contrast and sensitivity of the vibration fringes in time-averaged electronic speckle-pattern interferometry: Effect of variations of force level

Abstract

Keywords

ASJC Scopus subject areas

More information

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