Biaxial ("Tee") Rosette Pattern

The biaxial ("Tee") rosette pattern has two measuring grids perpendicular to one another. Planar rosettes, like the one shown here, are constructed with all grids on the same plane. Stacked rosettes are also available with separate grids "stacked" on top of one another. With two independent measurements made in perpendicular directions about a point, the principal strains can be calculated when their directions are known.