Abstract
A temporally modulated IR lamp is employed to heat the sur- face of a flawed plate and the resulting out-of-plane thermoelastic de- flection is monitored using phase-shifted temporal speckle pattern inter- ferometry. The speckle interferograms are continuously recorded by means of a high-speed digital camera with temporal phase shifting car- ried out by a Pockels cell synchronized with it. Temporal phase unwrap- ping through sequences of several hundreds of frames enables the de- termination of time-varying absolute displacement maps. Experimental results illustrate the possibilities of this novel nondestructive testing tech- nique. © 2003 Society of Photo-Optical Instrumentation Engineers.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
