Determination of Elastic Constants of Anisotropic Plates by Phase Stepping Speckle Interferometry

In the paper a procedure is described whereby the characterization of isotropic and anisonopic laminac is carried out by Tun field measurement of the surface rotations under proper Meymrs losds Th anglutie formmation does not necessariv imply a numerce caloration and the elastic constants are determined by integrating the whole experimental data on the surface of the srecimen. Measurements were carried out by phase-stepped speckle interferometry using a shegrometer based on Michelson desion. The experimental instrumentation, including the loading device, and the procedures for the manipulation of cynerimento data are detailed described experimental results obtained on a steel specimen and a composite laminate are also reported