Document Type

Article

Publication Date

7-2013

Journal or Book Title

Journal of Engineering Mechanics

Volume

139

Issue

7

First Page

879

Last Page

885

DOI

10.1061/(ASCE)EM.1943-7889.0000530

Abstract

Early detection of possible defects in civil infrastructure is vital to ensuring timely maintenance and extending structure life expectancy. The authors recently proposed a novel method for structural health monitoring based on soft capacitors. The sensor consisted of an off-the-shelf flexible capacitor that could be easily deployed over large surfaces, the main advantages being cost-effectiveness, easy installation, and allowing simple signal processing. In this paper, a capacitive sensor with tailored mechanical and electrical properties is presented, resulting in greatly improved robustness while retaining measurement sensitivity. The sensor is fabricated from a thermoplastic elastomer mixed with titanium dioxide and sandwiched between conductive composite electrodes. Experimental verifications conducted on wood and concrete specimens demonstrate the improved robustness, as well as the ability of the sensing method to diagnose and locate strain.

Research Focus Area

Structural Engineering

Comments

This is an author's final manuscript of an article from Journal of Engineering Mechanics 139 (2013): 879–885, doi:10.1061/(ASCE)EM.1943-7889.0000530. Posted with permission.

Copyright Owner

American Society of Civil Engineers

Language

en

File Format

application/pdf

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