Abstract
This paper presents a novel method of procuring and processing data for the assessment of civil structures via vibration monitoring. This includes the development of a custom sensor package designed to minimize the size/weight while being fully self-sufficient (i.e., not relying on external power). The developed package is delivered to the structure utilizing a customized Unmanned Aircraft System (UAS), otherwise known as a drone. The sensor package features an electropermanent magnet for securing it to the civil structure while a second magnet is used to secure the package to the drone during flight. The novel B-Spline Impulse Response Function (BIRF) technique was utilized to extract the Dynamic Signature Response (DSR) from the data collected by the sensor package. Experimental results are presented to validate this method and show the feasibility of deploying the sensor package on structures and collecting data valuable for Structural Health Monitoring (SHM) data processing. The advantages and limitations of the proposed techniques are discussed, and recommendations for further developments are made.
Highlights
This work presents an innovative process by which the health status of difficult-toaccess structures can be determined, utilizing a wireless sensor package for data acquisition, deployed by an Unmanned Aircraft System (UAS), which provides data for Dynamic Signature Response (DSR) techniques for damage detection
The data collected by the sensor package is analyzed with damage detection algorithms that process the vibration data and extract the DSR, which depends only on the structural condition
The goal was to show the feasibility of the drone-based deployment and retrieval of our sensor package, as well as the extraction of damage information from the collected vibration data
Summary
This work presents an innovative process by which the health status of difficult-toaccess structures (e.g., bridges) can be determined, utilizing a wireless sensor package for data acquisition, deployed by an Unmanned Aircraft System (UAS) (commonly known as a drone), which provides data for Dynamic Signature Response (DSR) techniques for damage detection. This sensor technology is a compact and low-cost sensor package with an onboard power supply that allows wireless acceleration data collection, eliminating the need for wired connection to the power grid. Such areas make it impossible to connect these systems to the power grid, creating a need for wireless and power-independent sensor packages
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