ABSTRACT
Strain information is the one of the most important keys to understand the real behavior of existing structures. Thus, strain gauges are widely used for strain measurement. Strain gauges require bonding on the surface to be measured. The bonding and wiring procedure take times and cost of field works. Structural engineers have to decide their point of interest at their desk in advance. However, in cases of structural damage evaluation, it is quite difficult to decide where to measure because there are usually many uncertainties.
