problem: A thin isotropic metal plate is subjected to the plane stress state shown (properties of the metal are: E = 10 x 106 psi and ν = 0.250). A uniaxial strain gage is mounted on the plate (properties of the strain gage are Sg = 2.00, Kt = 5%). The gage is wired into a P-3500 strain gage indicator, and a gage factor setting of 2.00 is used. Predict the strain measurement returned by the strain indicator
problem: You design a 1/4-arm bridge circuit that provides the maximum possible efficiency, using a 15 V constant voltage power supply you have in your lab. The circuit you design is shown at right, and provides an efficiency of 91%. What is the maximum power that can be applied to the strain gage you used?
Problem: A rectangular rosette is mounted on a test structure as shown, loads are applied, and the following strains are measured by strain gage elements 1, 2, and 3: ε1 = 1500 μm/m, ε2 = 2800 μm/m, ε3 = 200 μm/m. Determine γxy.