Shape and displacement measurement of discontinuous surfaces by combining fringe projection and digital image correlation

Tran Nam Nguyen; Jonathan M. Huntley; Richard L. Burguete; C. Russell Coggrave

doi:10.1117/1.3572190

1 October 2011 Shape and displacement measurement of discontinuous surfaces by combining fringe projection and digital image correlation

Tran Nam Nguyen, Jonathan M. Huntley, Richard L. Burguete, C. Russell Coggrave

Author Affiliations +

Optical Engineering, Vol. 50, Issue 10, 101505 (October 2011). https://doi.org/10.1117/1.3572190

Abstract

We describe how a shape-measurement system (SMS) based on fringe projection can be combined with a two-dimensional digital image correlation (DIC) technique to accurately measure both surface profile and displacement fields at the same time. Whereas the measurement of all three displacement components by traditional DIC requires the use of at least two cameras, the approach presented here provides the full three-dimensional (3-D) displacement field from a single-camera, single-projector SMS with no additional hardware requirements. Furthermore, the single-pixel spatial resolution of the fringe projection technique can be exploited to prevent the correlation peak-splitting phenomenon that occurs when a DIC subimage straddles a global geometrical discontinuity. Thus, unlike traditional 3-D DIC techniques, the proposed method can measure displacement fields on discontinuous surfaces as easily as on smooth ones. Details of the algorithm are given together with experimental results of a rigid-body translation test. Measurements made during a routine fatigue test on a part of a wing panel are also presented.

©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Tran Nam Nguyen, Jonathan M. Huntley, Richard L. Burguete, and C. Russell Coggrave "Shape and displacement measurement of discontinuous surfaces by combining fringe projection and digital image correlation," Optical Engineering 50(10), 101505 (1 October 2011). https://doi.org/10.1117/1.3572190

Published: 1 October 2011

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available