DECONVOLUTION APPROACH FOR SPARSE SENSOR ARRAYS IN STRUCTURAL HEALTH MONITORING

2008 ◽  
Author(s):  
T. Cicero ◽  
P. Cawley ◽  
M. Lowe ◽  
F. Simonetti ◽  
S. I. Rokhlin ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Sensor Arrays ◽  
Structural Health

Embedded Capacitance Sensor Array for Structural Health Monitoring of Pipeline Systems

2017 ◽  
Author(s):  
Jarod Weber ◽  
Jianfeng Shi ◽  
Chuck Zhang
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Single Point ◽  
Sensor Arrays ◽  
Electrode Array ◽  
Capacitance Sensor ◽  
Layer System ◽  
Pipe Surface ◽  
Structural Health ◽  
Embedded Capacitance

Embedded capacitance sensor arrays for Structural Health Monitoring (SHM) of piping is explored. Using a capacitive electrode layer system embedded within Fiber Reinforced Polymer (FRP) layers, to detect potential damage and loading conditions. The sensors are comprised of an electrode array, and allow changes in system capacitance to be monitored. Combined with baseline data points, subsequent measurements can provide indication of applied force changes within composite patched or composite reinforced piping, allowing for repair or reinforcement health status monitoring. Unlike traditional sensors which only measure a single point, the proposed approach incorporates an electrode array technique, while capacitive sensing affords the ability to detect minuscule changes in force on the whole pipe surface. Thus, providing detection and monitoring capabilities beyond those currently employed by industry such as optical fiber or strain gauge.

Experimental Investigations in Embedded Sensing for Structural Health Monitoring of Composite Components in Aerospace Vehicles

2012 ◽  
Author(s):  
Anindya Ghoshal ◽  
James Ayers ◽  
Mark Gurvich ◽  
Michael Urban ◽  
Nathaniel Bordick
Keyword(s):  
Cyclic Loading ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Test Specimen ◽  
Sensor Arrays ◽  
Lessons Learned ◽  
Experimental Investigations ◽  
Structural Health ◽  
Embedded Sensing ◽  
Fbg Sensors

This paper summarizes the experimental investigations for smart embedded sensing in rotorcraft composite components. The overall objective of this effort was to develop smart embedded sensor technologies for condition based maintenance (CBM) for composite components in Army rotorcraft. This paper presents the results of experimental investigations related to development and maturation of different types of embedded sensing solutions for structural health monitoring of composite components including Fiber Bragg Grating (FBG) sensors, phased and discrete piezoelectric sensor arrays. A discussion is provided relative to embedment of optical fibers into composites, and the results from embedded FBG sensors in a rotorcraft flexbeam subcomponent test specimen with seeded delamination subjected to dynamic loading. Likewise, results are analyzed of surface mounted phased array and embedded smart piezoelectric sensors in the flexbeam subcomponent test specimen with embedded delamination, subjected to fatigue cyclic loading. The paper also summarizes the lessons learned from efforts to nucleate and propagate delamination within composite components under dynamic cyclic loading.

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