An electronic speckle pattern interferometry in-plane system applied to the evaluation of mechanical characteristics of masonry

Electronic speckle pattern interferometry (ESPI) can be a powerful tool for efficient non-destructive testing and evaluation of micro-deformations of materials and structures. Unlike traditional transducers, ESPI requires no direct contact with the inspected object and the full-field visualization provides better understanding of the surface behaviour. The authors describe an in-plane deformation inspection system, which offers automatic...