Wireless and embedded carbon nanotube networks for damage detection in concrete structures

Mohamed Saafi

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

Concrete structures undergo an uncontrollable damage process manifesting in the form of cracks due to the coupling of fatigue loading and environmental effects. In order to achieve long-term durability and performance, continuous health monitoring systems are needed to make critical decisions regarding operation, maintenance and repairs. Recent advances in nanostructured materials such as carbon nanotubes have opened the door for new smart and advanced sensing materials that could effectively be used in health monitoring of structures where wireless and real time sensing could provide information on damage development. In this paper, carbon nanotube networks were embedded into a cement matrix to develop an in situ wireless and embedded sensor for damage detection in concrete structures. By wirelessly measuring the change in the electrical resistance of the carbon nanotube networks, the progress of damage can be detected and monitored. As a proof of concept, wireless cement–carbon nanotube sensors were embedded into concrete beams and subjected to monotonic and cyclic loading to evaluate the effect of damage on their response. Experimental results showed that the wireless response of the embedded nanotube sensors changes due to the formation of cracks during loading. In addition, the nanotube sensors were able to detect the initiation of damage at an early stage of loading.
LanguageEnglish
Article number395502
Number of pages7
JournalNanotechnology
Volume20
Issue number39
DOIs
Publication statusPublished - Sep 2009

Fingerprint

Carbon Nanotubes
Damage detection
Concrete construction
Carbon nanotubes
Sensors
Nanotubes
Cements
Health
Cracks
Acoustic impedance
Monitoring
Nanostructured materials
Environmental impact
Durability
Repair
Fatigue of materials
Concretes

Keywords

  • nanofabrication
  • nanotube
  • damage detection
  • wireless
  • remote sensing

Cite this

@article{7928b654e4834b96adafee30a14943f0,
title = "Wireless and embedded carbon nanotube networks for damage detection in concrete structures",
abstract = "Concrete structures undergo an uncontrollable damage process manifesting in the form of cracks due to the coupling of fatigue loading and environmental effects. In order to achieve long-term durability and performance, continuous health monitoring systems are needed to make critical decisions regarding operation, maintenance and repairs. Recent advances in nanostructured materials such as carbon nanotubes have opened the door for new smart and advanced sensing materials that could effectively be used in health monitoring of structures where wireless and real time sensing could provide information on damage development. In this paper, carbon nanotube networks were embedded into a cement matrix to develop an in situ wireless and embedded sensor for damage detection in concrete structures. By wirelessly measuring the change in the electrical resistance of the carbon nanotube networks, the progress of damage can be detected and monitored. As a proof of concept, wireless cement–carbon nanotube sensors were embedded into concrete beams and subjected to monotonic and cyclic loading to evaluate the effect of damage on their response. Experimental results showed that the wireless response of the embedded nanotube sensors changes due to the formation of cracks during loading. In addition, the nanotube sensors were able to detect the initiation of damage at an early stage of loading.",
keywords = "nanofabrication, nanotube, damage detection, wireless, remote sensing",
author = "Mohamed Saafi",
year = "2009",
month = "9",
doi = "10.1088/0957-4484/20/39/395502",
language = "English",
volume = "20",
journal = "Nanotechnology",
issn = "0957-4484",
number = "39",

}

Wireless and embedded carbon nanotube networks for damage detection in concrete structures. / Saafi, Mohamed.

In: Nanotechnology, Vol. 20, No. 39, 395502, 09.2009.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Wireless and embedded carbon nanotube networks for damage detection in concrete structures

AU - Saafi, Mohamed

PY - 2009/9

Y1 - 2009/9

N2 - Concrete structures undergo an uncontrollable damage process manifesting in the form of cracks due to the coupling of fatigue loading and environmental effects. In order to achieve long-term durability and performance, continuous health monitoring systems are needed to make critical decisions regarding operation, maintenance and repairs. Recent advances in nanostructured materials such as carbon nanotubes have opened the door for new smart and advanced sensing materials that could effectively be used in health monitoring of structures where wireless and real time sensing could provide information on damage development. In this paper, carbon nanotube networks were embedded into a cement matrix to develop an in situ wireless and embedded sensor for damage detection in concrete structures. By wirelessly measuring the change in the electrical resistance of the carbon nanotube networks, the progress of damage can be detected and monitored. As a proof of concept, wireless cement–carbon nanotube sensors were embedded into concrete beams and subjected to monotonic and cyclic loading to evaluate the effect of damage on their response. Experimental results showed that the wireless response of the embedded nanotube sensors changes due to the formation of cracks during loading. In addition, the nanotube sensors were able to detect the initiation of damage at an early stage of loading.

AB - Concrete structures undergo an uncontrollable damage process manifesting in the form of cracks due to the coupling of fatigue loading and environmental effects. In order to achieve long-term durability and performance, continuous health monitoring systems are needed to make critical decisions regarding operation, maintenance and repairs. Recent advances in nanostructured materials such as carbon nanotubes have opened the door for new smart and advanced sensing materials that could effectively be used in health monitoring of structures where wireless and real time sensing could provide information on damage development. In this paper, carbon nanotube networks were embedded into a cement matrix to develop an in situ wireless and embedded sensor for damage detection in concrete structures. By wirelessly measuring the change in the electrical resistance of the carbon nanotube networks, the progress of damage can be detected and monitored. As a proof of concept, wireless cement–carbon nanotube sensors were embedded into concrete beams and subjected to monotonic and cyclic loading to evaluate the effect of damage on their response. Experimental results showed that the wireless response of the embedded nanotube sensors changes due to the formation of cracks during loading. In addition, the nanotube sensors were able to detect the initiation of damage at an early stage of loading.

KW - nanofabrication

KW - nanotube

KW - damage detection

KW - wireless

KW - remote sensing

U2 - 10.1088/0957-4484/20/39/395502

DO - 10.1088/0957-4484/20/39/395502

M3 - Article

VL - 20

JO - Nanotechnology

T2 - Nanotechnology

JF - Nanotechnology

SN - 0957-4484

IS - 39

M1 - 395502

ER -