Fig. 11From: The Use of Advanced Optical Measurement Methods for the Mechanical Analysis of Shear Deficient Prestressed Concrete MembersExperimentally measured angle \(|\theta _{\epsilon _{2}}|\) between the direction of the principal compressive strain \(\epsilon _{2}\) as a function of the location along the x-axis and applied load for specimens a B101 (derived from Krypton K600 CMMs) and b B104 (derived from 3D-DIC).Back to article page