Application of digital speckle interferometry to visualize surface changes in metallic samples immersed in Cu(NO3)(2) solutions

作者：Andres Nieves^*; Andres Arroyo Ana; Pilar Arroyo M; Palero Virginia R; Lobera Julia; Angurel Luis A

来源：Optical Engineering, 2013, 52(10): 101918.

DOI：10.1117/1.OE.52.10.101918

• speckle interferometry
• metrology
• surface measurements
• nondestructive testing

Digital speckle pattern interferometry (DSPI) has been applied to analyze surface corrosion processes in a metallic sample immersed in a 0.1 M Cu(NO3)(2) solution. The corrosion process induces changes in the surface and in the solution refractive index. A detailed analysis of the DSPI measurements has been performed to obtain a two-dimensional visualization of the surface changes and an evaluation of the refractive index changes of the solution. The possibilities of DSPI for measuring surface changes in these conditions have been analyzed.

• 出版日期2013-10