Small Bone Loading Method for Verification of Axial Load Using a Carrier Method of In-Plane Speckle Pattern Interferometry

A computerized system for real-time displacement visualization using carrier fringes in an electronic speckle in-plane sensitive interferometer allows force calibration for micro-displacement analisis of rat bones, and verification of axial loading conditions. Once the force has been calibrated and the load is applied along the bone axis, the difference of phase method and the phase stepping method are used to find out the phase map, that after unwrapping allows a final phase recovery with the evaluation of displacements. The experimental results obtained for calibration of forces and axial loading verification, illustrate the advantages of the proposed system.