On the in-situ on-line structural health monitoring of composites using screen-printed sensors

2021 ◽  
pp. 089270572110019
Author(s):  
Saad Nauman ◽  
Zeeshan Asfar ◽  
Sheraz Ahmed ◽  
M Ali Nasir ◽  
Nourredine Aït Hocine
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Screen Printing ◽  
Tensile Loading ◽  
Strain Gauges ◽  
Metal Foil ◽  
Nano Composite ◽  
Printed Sensors ◽  
On Line ◽  
Screen Printed

This study aims at developing the screen-printed sensors as a viable means of depositing sensing tracks on composites for their on-line structural health monitoring. Conventional silk screen was employed in order to deposit a nano-composite solution comprising of a conductive nano-filler (carbon nano-particles) dispersed in a thermoplastic matrix (high density polystyrene) on laminated composite specimens. The solution was deposited using a squeegee and was allowed to dry. Commercially available metal foil strain gauges were also bonded alongside screen-printed sensor in order to compare the response of the screen-printed sensors with the commercially available strain gauges. The sensing ability of these screen-printed sensors was tested on a universal testing machine (MTS 810) in four-point bending configuration using a load cell of 100 kN. The sensor deposited using screen-printing technique underwent tensile loading at the lower side of the laminate. A data linearization and amplification module comprising of commercially available instrumentation amplifier (INA 118) was used in conjunction with data acquisition module (Keithley KUSB 3100). The results obtained show that the screen-printed sensors have higher gauge factors in tensile loading scenario with reasonably linear response as compared to traditional metal foil strain gauges. The ease of the deposition of a nano-composite solution via screen printing also makes the technique a viable alternative to the traditional resin bonded metal foil strain gauges which have to be bonded on the surface. Moreover, screen printing offers unlimited options for the development of smart composites in various configurations for a multitude of structural applications.

Piezoresistive Fibrous Sensor for On-Line Structural Health Monitoring of Composites

2017 ◽  
pp. 455-469
Author(s):  
Saad Nauman ◽  
Irina Cristian ◽  
François Boussu ◽  
Vladan Koncar
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Structural Health ◽  
On Line

On-line Bayesian model updating for structural health monitoring

2018 ◽  
Vol 103 ◽  
pp. 174-195 ◽  
Author(s):  
Roberto Rocchetta ◽  
Matteo Broggi ◽  
Quentin Huchet ◽  
Edoardo Patelli
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Bayesian Model ◽  
Model Updating ◽  
Structural Health ◽  
On Line

Smart hybrid nano composite concrete embedded sensors for structural health monitoring

2020 ◽  
Vol 27 ◽  
pp. 603-609
Author(s):  
A.K. Roopa ◽  
Anand M. Hunashyal ◽  
Pallavi Venkaraddiyavar ◽  
Sharanabasava V. Ganachari
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Embedded Sensors ◽  
Nano Composite ◽  
Structural Health

Structural health monitoring of GFRP laminates using graphene-based smart strain gauges

2018 ◽  
Vol 40 (8) ◽  
Author(s):  
Muhammad Anas ◽  
Muhammad Ali Nasir ◽  
Zeeshan Asfar ◽  
Saad Nauman ◽  
Mehmet Akalin ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Strain Gauges ◽  
Structural Health

Fibre Bragg grating sensor applications for structural health monitoring

2018 ◽  
Vol 92 (3) ◽  
pp. 355-367
Author(s):  
Cansu Karatas ◽  
Boray Degerliyurt ◽  
Yavuz Yaman ◽  
Melin Sahin
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Composite Structures ◽  
Composite Beams ◽  
Strain Gauges ◽  
Bragg Grating ◽  
Fibre Bragg Grating ◽  
Content Type ◽  
Structural Health ◽  
Fbg Sensors

Purpose Structural health monitoring (SHM) has become an attractive subject in aerospace engineering field considering the opportunity to avoid catastrophic failures by detecting damage in advance and to reduce maintenance costs. Fibre Bragg Grating (FBG) sensors are denoted as one of the most promising sensors for SHM applications as they are lightweight, immune to electromagnetic effects and able to be embedded between the layers of composite structures. The purpose of this paper is to research on and demonstrate the feasibility of FBG sensors for SHM of composite structures. Design/methodology/approach Applications on thin composite beams intended for SHM studies are presented. The sensor system, which includes FBG sensors and related interrogator system, and manufacturing of the beams with embedded sensors, are detailed. Static tension and torsion tests are conducted to verify the effectiveness of the system. Strain analysis results obtained from the tests are compared with the ones obtained from the finite element analyses conducted using ABAQUS® software. In addition, the comparison between the data obtained from the FBG sensors and from the strain gauges is made by also considering the noise content. Finally, fatigue test under torsion load is conducted to observe the durability of FBG sensors. Findings The results demonstrated that FBG sensors are feasible for SHM of composite structures as the strain data are accurate and less noisy compared to that obtained from the strain gauges. Furthermore, the convenience of obtaining reliable data between the layers of a composite structure using embedded FBG sensors is observed. Practical implications Observing the advantages of the FBG sensors for strain measurement will promote using FBG sensors for damage detection related to the SHM applications. Originality/value This paper presents applications of FBG sensors on thin composite beams, which reveal the suitability of FBG sensors for SHM of lightweight composite structures.

Research on Miniaturized and Portable Impedance-Measuring Device for Structural Health Monitoring

2011 ◽  
Vol 230-232 ◽  
pp. 587-591
Author(s):  
Yu Xiang Zhang ◽  
Dong Dong Wen ◽  
Hua Cheng Li ◽  
Fu Hou Xu
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Structural Damage ◽  
Electric Impedance ◽  
Measuring Device ◽  
Line System ◽  
Electromechanical Impedance ◽  
Structural Health ◽  
Impedance Technique ◽  
On Line

Electromechanical impedance technique which based on smart material is a new method for structural damage detection, and it could be widely applied in structural health monitoring field. However, a very expensive and bulky analyzer is being used to measure the impedance, which is not practical for on-line system. Therefore, this paper developed a device that can measure the electric impedance using small modular electric components and reasonable circuit. Experiments are carried out to test the aluminum beam crack. Results indicate that the device can measure the electric impedance and detect the damage effectively. The proposed method provides a solution to miniaturize the impedance-measuring equipment and reduce the cost of measurement.

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