Document Type

Article

Publication Date

12-2013

Journal or Book Title

IEEE/ASME Transactions on Mechatronics

Volume

18

Issue

6

First Page

1647

Last Page

1654

DOI

10.1109/TMECH.2013.2283365

Abstract

Field applications of existing sensing solutions to structural health monitoring (SHM) of civil structures are limited. This is due to economical and/or technical challenges in deploying existing sensing solutions to monitor geometrically large systems. To realize the full potential of SHM solutions, it is imperative to develop scalable cost-effective sensing strategies. We present a novel sensor network specifically designed for strain sensing over large surfaces. The network consists of soft elastomeric capacitors (SECs) deployed in an array form. Each SEC acts as a surface strain gage transducing local strain into changes in capacitance. Results show that the sensor network can track strain history above levels of 25 με using an inexpensive off-the-shelf data acquisition system. Tests at large strains show that the sensor's sensitivity is almost linear over strain levels of 0-20%. We demonstrate that it is possible to reconstruct deflection shapes for a simply supported beam subjected to quasi-static loads, with accuracy comparable to resistive strain gages.

Research Focus Area

Structural Engineering

Comments

This is an author's manuscript of an article from IEEE/ASME Transactions on Mechatronics 18 (2013): 1647–1654, doi.10.1109/TMECH.2013.2283365. Posted with permission.

Copyright Owner

IEEE

Language

en

File Format

application/pdf

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