Translator Disclaimer
7 March 2006 Radial in-plane interferometer for ESPI measurement
Author Affiliations +
This paper presents a new kind of double illumination interferometer used for true radial in-plane displacement measurement with electronic speckle pattern interferometry (ESPI). The basic principles, some characteristics and implementation details are discussed. Basic algorithms for displacement and strain measurements are presented and implementation details are given. A very robust and portable device was built using this new kind of interferometer to measure outside the optical bench. This device has been successfully used for residual stress measurements in a very efficient way where the blind hole drilling technique is used in combination with the radial displacement field. Early results show a potential measurement performance comparable to the conventional blind hole method using strain gages. Measurement time is almost one order less than the strain gage based measurement system.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Armando Albertazzi Jr., Cesar Kanda, Maikon R. Borges, and Frank Hrebabetzky "Radial in-plane interferometer for ESPI measurement", Proc. SPIE 4101, Laser Interferometry X: Techniques and Analysis, (7 March 2006);

Back to Top