Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Vibration measurement using phase-shifting speckle-pattern interferometry

Not Accessible

Your library or personal account may give you access

Abstract

Digital speckle-pattern interferometries for the measurement of a vibration amplitude are presented, based on phase shifting of a speckle interferogram. The calculation of the square root and division with phase-shifted speckle interferograms give a high contrast fringe pattern, which contours a vibration amplitude regardless of a bias deformation of the vibration. The arctangent calculation with phase-shifted fringe patterns gives the phase distribution proportional to the bias deformation of the vibration, which is obtained by the correction of phase discontinuities of ±2π and ±π in the phase image. The detection of the phase discontinuity of ±π in the phase image gives the center line of a dark fringe in the calculated fringe pattern. The fringe-order numbers are determined by referring to the new calculated fringe pattern. The distribution of the vibration amplitude is obtained by the interpolation of the fringe-order numbers.

© 1986 Optical Society of America

Full Article  |  PDF Article
More Like This
Fringe scanning speckle-pattern interferometry

Suezou Nakadate and Hiroyoshi Saito
Appl. Opt. 24(14) 2172-2180 (1985)

Computer-aided speckle pattern interferometry

Suezou Nakadate, Toyohiko Yatagai, and Hiroyoshi Saito
Appl. Opt. 22(2) 237-243 (1983)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (12)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (15)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved