No abstract

Structural Health monitoring plays a vital role in all generations for the safety of life and property. The method of Electromechanical Impedance (EMI) method and sensors are used in damage detection of civil and mechanical structures. The structure deteriorates due to ageing and environmental factors. This study represents the detection of damage in concrete structure using piezo electric transducer and EMI method. The piezo sensor is bonded to the concrete structure using epoxy resin and damage is created by using flexural testing machine. The force is applied using flexural testing machine at different KiloNewton. The output from the impedance chip is noted at undamaged state and at all levels of applied force. The impedance, admittance, conductance and susceptance curves are drawn with different levels of frequency. Root mean square deviation is also calculated for the detection of damage. The results conclude that Impedance chip is highly reliable and accurate in damage detection of concrete structure.

No abstract

This paper reveals the experimental evaluation on the usage of electromechanical impedance techniques in pipeline structures. Pipelines are damaged due to its exposure to landslides, corrosion, overloading and earthquakes. To overcome this situation, the pipelines must be monitored continuously to avoid such damage. PZT (lead zirconate titanate) patch is used for sensing the damage in the structure. The most effective method in structural health monitoring for damage detection is electromechanical impedance technique. Impedance chip is used for structural health monitoring using this technique. The admittance measurements are measured using impedance chip. The results indicate that output obtained from the impedance chip is accurate. Damage detection in pipeline structure using impedance chip is the novel method in this proposed paper.