EXPERIMENTAL STUDY ON THE STRUCTURAL HEALTH MONITORING ON A R.C.C. BEAM BASED ON PIEZOELECTRIC MATERIAL

There are various structural health monitoring approaches has been investigated or discovered which are based on the piezoelectric smart sensor. Guided wave propagation based non-destructive active monitoring method is one of them which is preferable for damage detection in reinforced concrete structures. In order to detect the basic mechanical properties and generated damage of reinforced concrete structure, piezoelectric material (sensor/ actuator) based guided wave propagation method was done experimentally in the lab using the experimental specifically designed setups. In the beam structure energy attenuation of stress wave was measured by the relative index between the output voltage of sensors and excitation voltage at the actuator [1]. On the basis of experimental results of R.C.C Beam specimen the effect of excitation amplitude excitation frequency wave propagation paths are evaluated on the output signature of sensors. The value of relative voltage attenuation coefficient RVAC as a result at as an effective indicator. For the purpose of measuring attenuation of waves through the interior damage of reinforced concrete beam. The parameter RVAC in the guided wave propagation gives the damage of the interior and exterior in beam elements.