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.
Highlights
Civil and Mechanical structures starts degrading after years due to environmental factors and loading effects
In order to minimize the cost and size, Impedance chip was used [6].The Piezo sensors are embedded in different orientations and hydration of Reinforced concrete beam was monitored [7].Naveet et al made a comparison study on bonded, embedded and metal wire transducer[8] Piezo sensor and Impedance chip are used for detecting the damage in structures
Damage is created by applying the force using Flexural testing machine at different level in the concrete structure and the corresponding output is measured from Impedance chip
Summary
Civil and Mechanical structures starts degrading after years due to environmental factors and loading effects Monitoring of these structures is required at regular intervals of time to avoid damage to life and property. Structures like aluminium beam, concrete, steel etc were used [4].Fabricio Guimarães Baptista et al evaluated the impedance measurement system on Aluminium structure and proved that the excitation signal influence the output impedance measurement[5] Impedance Analyzers or LCR meter are used for measuring impedance. The cost of these components is high and the size is bulk. Using Impedance chip, damage was detected on bolted joint structure used for railway joints[10]
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