scholarly journals Strain sensitivity of carbon nanotube cement-based composites for structural health monitoring

2016 ◽  
Author(s):  
Antonella D'Alessandro ◽  
Filippo Ubertini ◽  
Simon Laflamme ◽  
Marco Rallini ◽  
Annibale L. Materazzi ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Strain Sensitivity ◽  
Structural Health

Structural Health Monitoring for Carbon Fiber/Carbon Nanotube (CNT)/Epoxy Composite Sensor

2006 ◽  
Vol 321-323 ◽  
pp. 290-293 ◽  
Author(s):  
Sang Il Lee ◽  
Dong Jin Yoon
Keyword(s):  
Electrical Resistivity ◽  
Carbon Nanotube ◽  
Carbon Fiber ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Epoxy Composite ◽  
Structural Safety ◽  
Structural Health ◽  
Nanotube Composites ◽  
Carbon Fiber Epoxy

Structural health monitoring for carbon nanotube (CNT)/carbon fiber/epoxy composite was verified by the measurement of electrical resistivity. This study has focused on the preparation of carbon nanotube composite sensors and their application for structural health monitoring. The change of the electrical resistance was measured by a digital multimeter under tensile loads. Although a carbon fiber was broken, the electrical connection was still kept by distributed CNT particles in the model composites. As the number of carbon fiber breakages increased, electrical resistivity was stepwise increased. The CNT composites were well responded with fiber damages during the electro-micromechnical test. Carbon nanotube composites can be useful sensors for structural health monitoring to diagnose a structural safety and to prevent a collapse.

Structural health monitoring of composites from carbon nanotube coated e-glass fibre

2021 ◽  
Vol 5 (1/2) ◽  
pp. 164
Author(s):  
Sergio Rafael Rodriguez ◽  
Sidney Wong ◽  
Omar Dwidar ◽  
Amro El Badawy ◽  
Ashraf Elbarbary ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Glass Fibre ◽  
Structural Health

scholarly journals Connecting concrete technology and machine learning: proposal for application of ANNs and CNT/concrete composites in structural health monitoring

RSC Advances ◽  
2020 ◽  
Vol 10 (39) ◽  
pp. 23038-23048
Author(s):  
Sofija Kekez ◽  
Jan Kubica
Keyword(s):  
Machine Learning ◽  
Carbon Nanotube ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Large Scale ◽  
Concrete Structures ◽  
Concrete Technology ◽  
Structural Health

Carbon nanotube/concrete composite possesses piezoresistivity i.e. self-sensing capability of concrete structures even in large scale.

scholarly journals Self-Sensing Hybrid Composite Rod with Braided Reinforcement for Structural Health Monitoring

2012 ◽  
Vol 730-732 ◽  
pp. 379-384 ◽  
Author(s):  
Katherine P. Rosado Mérida ◽  
Sohel Rana ◽  
Cristiana Gonilho-Pereira ◽  
Raul Fangueiro
Keyword(s):  
Structural Health Monitoring ◽  
Carbon Fibre ◽  
Health Monitoring ◽  
Glass Fibre ◽  
Traffic Monitoring ◽  
Strain Sensitivity ◽  
Strain Sensing ◽  
Braided Composites ◽  
Fibre Glass ◽  
Structural Health

Enhancing the performance and lightness of different structures has already been achieved by the employment of fibre reinforced composite materials. Nowadays, a new challenging perspective is being given to these materials by the inclusion of non-metallic conductive components. This emerging technology will lead to multifunctional composites with possible applications in structural health monitoring and traffic monitoring. The aim is to avoid corrosion problems from metallic components, as well as to eliminate the need of expensive equipments used for the health monitoring of large infrastructures. In the present research, the strain-sensing capability of a core-reinforced hybrid carbon fibre/glass fibre braided composite has been investigated in order to develop continuous monitoring system. The characterization of sensing behaviour was performed with the help of an instrumental set-up capable of measuring the change in electrical resistance with mechanical stresses applied to the samples. The effect of core composition (carbon fibre/glass fibre weight ratio) on the strain sensitivity of the braided composites has been studied in order to find out the optimum composition for best sensing capability. Among the three compositions studied (23/77, 47/53 and 100/0), composites with lowest amount of carbon fibre showed the best strain sensitivity with gauge factors up to 23.4 at very low flexural strain (0.55%). Attempts have also been made in this research to develop a piezoresistive matrix for the braided composites in order to further enhance their strain sensitivity. For this purpose, the strain sensing capability of an unsaturated polyester matrix dispersed with chopped carbon fibres (1mm and 3 mm lengths) at various weight % (0.5, 0.75 and 1.25%) was evaluated in order to find out their optimum length and concentration. It was observed that chopped fibres with different lengths showed similar strain sensitivity, which however, improves with the decrease in their concentrations.

Carbon nanotube-based strain sensor for structural health monitoring

2019 ◽  
Vol 58 (SD) ◽  
pp. SDDJ07 ◽  
Author(s):  
Maeum Han ◽  
Jae-Keon Kim ◽  
Ye-il Choi ◽  
Jong Pil Yun ◽  
Gil S. Lee ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Strain Sensor ◽  
Structural Health

A carbon nanotube strain sensor for structural health monitoring

2006 ◽  
Vol 15 (3) ◽  
pp. 737-748 ◽  
Author(s):  
Inpil Kang ◽  
Mark J Schulz ◽  
Jay H Kim ◽  
Vesselin Shanov ◽  
Donglu Shi
Keyword(s):  
Carbon Nanotube ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Strain Sensor ◽  
Structural Health

Structural Health Monitoring (SHM) of Three-Dimensional Braided Composite Material using Carbon Nanotube Thread Sensors

2013 ◽  
Vol 29 (4) ◽  
pp. 617-621 ◽  
Author(s):  
Z. Wan ◽  
J. D. Li ◽  
M. Jia ◽  
J. L. Li
Keyword(s):  
Composite Material ◽  
Carbon Nanotube ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Smart Materials ◽  
Early Stage ◽  
Three Dimensional ◽  
Braided Composite ◽  
Structural Health ◽  
Smart Composite Materials

ABSTRACTStructural Health Monitoring (SHM) takes advantage of the recent advances in nanotechnology and sensing in order to monitor the behavior of a structure, assess its performance and identify damage at an early stage. Monitoring the state of strain throughout an entire structure is essential to determine its state of stress, detect potential residual stresses after fabrication, and also to help to establish its integrity. The Carbon nanotube thread was integrated into three-dimensional braiding materials and used for the first time as a sensor to monitor strain and also to detect damage in the three-dimensional braided composite material.In this paper a literature review about the application of carbon nanotubes thread for sensors and smart materials used for SHM of braiding structures is presented. The test data show the braided angle is important parameter for structural health monitoring of three-dimensional. The research will provide a new integrated and distributed technologies for the built-in carbon nanotube sensor to detect the health of composite. The subject will provide the new idea and method for the development of smart composite materials research and application.

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