Development and evaluation of reusable piezo sensors for health monitoring of thin-walled steel structures

This article presents the fabrication and testing of a new reusable piezo sensor configuration along with a practical damage detection cum localization algorithm. The proposed sensor configuration is suitable for widespread application of the electro-mechanical impedance (EMI) technique on large-siz...

Full description

Saved in:
Bibliographic Details
Published in:Journal of civil structural health monitoring 2022-06, Vol.12 (3), p.647-657
Main Authors: Baral, Sushmita, Adhikari, Sailesh, Negi, Prateek, Bhalla, Suresh
Format: Article
Language:English
Subjects:
Algorithms
Bonding
Civil Engineering
Configurations
Control
Correlation coefficients
Damage assessment
Damage detection
Damage localization
Dynamical Systems
Engineering
Localization
Measurement Science and Instrumentation
Mechanical impedance
Original Paper
Sensors
Steel plates
Steel structures
Thin wall structures
Vibration
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This article presents the fabrication and testing of a new reusable piezo sensor configuration along with a practical damage detection cum localization algorithm. The proposed sensor configuration is suitable for widespread application of the electro-mechanical impedance (EMI) technique on large-sized thin-walled steel structures. Traditionally, the EMI technique uses piezo sensors permanently surface bonded on the structure. However, this not only increases the risk of deterioration over a period, but also demands a large number of piezo sensors to accurately locate damage and assess its severity. The proposed sensor configuration, on the other hand, deploys a miniaturized hassle-free configuration consisting of a piezo sensor bonded on a detachable nut–bolt–washer combination, imparting it flexibility of multiple usage at various locations of the same structure on a one-by-one basis, thus significantly reducing the number of sensors. Its repeatability is ensured by using a specified torque of 25 Nm for tightening the nut–bolt system and the same has been verified experimentally using the correlation coefficient. The proposed reusable configuration is successfully demonstrated for damage diagnosis consisting of damage detection and localization on a large steel plate-type structure. The outcome of this study is a reusable sensor and the associated simple damage localization algorithm suitable for monitoring large 2D structures in a cost-effective manner as compared to the conventional surface-bonded configuration.
ISSN:2190-5452
2190-5479
DOI:10.1007/s13349-022-00567-3