Strain Sensing Sheets for Structural Health Monitoring Based on Large-Area Electronics and Integrated Circuits

2016 ◽  
Vol 104 (8) ◽  
pp. 1513-1528 ◽  
Author(s):  
Branko Glisic ◽  
Yao Yao ◽  
Shue-Ting E. Tung ◽  
Sigurd Wagner ◽  
James C. Sturm ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Integrated Circuits ◽  
Health Monitoring ◽  
Strain Sensing ◽  
Large Area ◽  
Structural Health ◽  
Large Area Electronics

Large-Scale Sensing System Combining Large-Area Electronics and CMOS ICs for Structural-Health Monitoring

2014 ◽  
Vol 49 (2) ◽  
pp. 513-523 ◽  
Author(s):  
Yingzhe Hu ◽  
Warren S. A. Rieutort-Louis ◽  
Josue Sanz-Robinson ◽  
Liechao Huang ◽  
Branko Glisic ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Large Scale ◽  
Large Area ◽  
Structural Health ◽  
Sensing System ◽  
Large Area Electronics

scholarly journals Large-Area Resistive Strain Sensing Sheet for Structural Health Monitoring

Sensors ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 1386 ◽  
Author(s):  
Levent E. Aygun ◽  
Vivek Kumar ◽  
Campbell Weaver ◽  
Matthew Gerber ◽  
Sigurd Wagner ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Printed Circuit Board ◽  
Early Stage ◽  
Field Tests ◽  
Circuit Board ◽  
Gauge Factor ◽  
Peak Strain ◽  
Large Area ◽  
Structural Health

Damage significantly influences response of a strain sensor only if it occurs in the proximity of the sensor. Thus, two-dimensional (2D) sensing sheets covering large areas offer reliable early-stage damage detection for structural health monitoring (SHM) applications. This paper presents a scalable sensing sheet design consisting of a dense array of thin-film resistive strain sensors. The sensing sheet is fabricated using flexible printed circuit board (Flex-PCB) manufacturing process which enables low-cost and high-volume sensors that can cover large areas. The lab tests on an aluminum beam showed the sheet has a gauge factor of 2.1 and has a low drift of 1.5 μ ϵ / d a y . The field test on a pedestrian bridge showed the sheet is sensitive enough to track strain induced by the bridge’s temperature variations. The strain measured by the sheet had a root-mean-square (RMS) error of 7 μ ϵ r m s compared to a reference strain on the surface, extrapolated from fiber-optic sensors embedded within the bridge structure. The field tests on an existing crack showed that the sensing sheet can track the early-stage damage growth, where it sensed 600 μ ϵ peak strain, whereas the nearby sensors on a damage-free surface did not observe significant strain change.

Large-area electronics combined with integrated circuits into a strain sensing sheets

2015 ◽  
Vol 105 (22) ◽  
pp. 1-8
Author(s):  
Yao Yao ◽  
Shue-Ting Tung ◽  
Naveen Verma ◽  
Sigurd Wagner ◽  
James Sturm ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Strain Sensing ◽  
Large Area ◽  
Large Area Electronics

A Strain Sensing Structural Health Monitoring System for Delaminated Composite Structures

2012 ◽  
Vol 249-250 ◽  
pp. 849-855 ◽  
Author(s):  
Andrea Alaimo ◽  
Alberto Milazzo ◽  
Calogero Orlando
Keyword(s):  
Structural Health Monitoring ◽  
Fiber Optics ◽  
Health Monitoring ◽  
Composite Structures ◽  
Piezoelectric Sensors ◽  
Strain Sensing ◽  
Health Monitoring System ◽  
Structural Health ◽  
Monitoring Model ◽  
Element Approach

Structural Health Monitoring (SHM) for composite materials is becoming a primary task due to their extended use in safety critical applications. Different methods, based on the use of piezoelectric transducers as well as of fiber optics, has been successfully proposed to detect and monitor damage in composite structural components with particular attention focused on delamination cracks.In the present paper a Structural Health Monitoring model, based on the use of piezoelectric sensors, already proposed by the authors for isotropic damaged components, is extended to delaminated composite structures. The dynamic behavior of the host damaged structure and the bonded piezoelectric sensors is modeled by means of a boundary element approach based on the Dual Reciprocity BEM. The sensitivity of the piezoelectric sensors has been studied by varying the delamination length characterizing the skin/stiffener debonding phenomenon of composite structures undergoing dynamic loads.

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.

Sign in / Sign up

Export Citation Format

Share Document