Method for Separation of Electromagnetic Responses of Mechanoelectrical Transformations Under the Impact of External Noise

Anatoly Surzhikov,Aleksandr Bombizov,Anna Demikhova,Anton Loschilov,Anatoly Bespal’Ko,A.V Yurchenko,V.I Syryamkin

doi:10.1051/matecconf/20167901049

Abstract

The paper addresses the diagnosis of the presence of defects in concrete, cement-sand and other building and structure mixes using mechanoelectrical transformations. The problem of high levels of electromagnetic noise and interference affecting the correct interpretation of the data to diagnose presence of defects is considered. A version of the electromagnetic response from the unit heterogeneity is proposed, and the assumption of the total electromagnetic signal is suggested. The experiment on acoustic excitation of the sample was conducted and the electromagnetic responses were recorded and filtered using the correlation analysis. The obtained result was compared to the model one to confirm the single response model.

Highlights

During production and operation of concrete structures, there is a high demand for their reliability, since it is directly related to life safety
The studies were performed using the experimental setup, which excites the sample by a series of acoustic pulses and records the electromagnetic responses of mechanoelectrical transformations
The unit of exposure and measuring (UEaM) consists of a piezoelectric emitter, which induces a series of acoustic pulses of a predetermined shape towards the test sample and a differential capacitive sensor to receive the electromagnetic response

Summary

Introduction

During production and operation of concrete structures, there is a high demand for their reliability, since it is directly related to life safety. Deterioration of strength characteristics of concrete blocks can be largely due to the emergence of defect-containing areas that may appear during the manufacturing process due to imperfect processes and under the attack of the aggressive environment. In this regard, the development of a rapid diagnostic method suitable for quality control of construction materials both in the laboratory and on site and to analyze the reliability and strength of structures and supporting structures is an important task. In the defect-containing region, each converter exhibited the amplitude signal envelopes, and the coordinates of the defect boundaries were recorded These approaches are based on the principle of elastic (ultrasonic) wave propagation in the medium

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