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

Three-dimensional deformation field measurement with digital speckle correlation

Not Accessible

Your library or personal account may give you access

Abstract

Digital speckle correlation is based on a detailed analysis of changes in speckle images that are recorded from laser-illuminated rough surfaces. The two in-plane components are obtained by cross-correlation of corresponding subimages, a method also known as digital speckle photography. The local gradient of the hitherto inaccessible out-of-plane component is determined from the characteristic dependence of the speckle correlation on the spatial frequency. A detailed experimental study is carried out to analyze the new technique for systematic and random measuring errors. For moderate decorrelation the accuracy of the out-of-plane measurement is better than λ/10 and thus comparable with interferometric techniques. Yet the extremely simple and robust optical setup is suited to nondestructive-testing applications in harsh environments. The quality of the deformation maps is demonstrated in a practical application.

© 2003 Optical Society of America

Full Article  |  PDF Article
More Like This
Speckle interferometry: three-dimensional deformation field measurement with a single interferogram

Thomas Fricke-Begemann and Jan Burke
Appl. Opt. 40(28) 5011-5022 (2001)

Full-field 3D deformation measurement: comparison between speckle phase and displacement evaluation

Davood Khodadad, Alok Kumar Singh, Giancarlo Pedrini, and Mikael Sjödahl
Appl. Opt. 55(27) 7735-7743 (2016)

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 (11)

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 (36)

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