subject:(Health Monitoring)

California State University – Sacramento

1. Rotar, Viorel. Health state monitoring system design.

Degree: MS, Electrical and Electronic Engineering, 2013, California State University – Sacramento

URL: http://hdl.handle.net/10211.9/1943

► The health of hospitalized patients often deteriorates, because the available medical staff is unaware of the deterioration. The condition of normally healthy people under stressful… (more)

▼ The health of hospitalized patients often deteriorates, because the available medical staff is unaware of the deterioration. The condition of normally healthy people under stressful situations can deteriorate, because they are not aware that they have reached their physical limits. Infants can die in their ???Sleep??? because of Sudden Infant Death Syndrome (SIDS). Death could be prevented by waking the child, but the parents are unaware that the infant experiences lack of oxygen. People with epilepsy can die because a seizure was not detected in a timely manner. In severe epileptic episodes, death from airway constriction can occur in less than 3-5 minutes unless help is immediately provided. Therefore, a Health State Monitoring System (HSMS), able to detect and alarm when a health abnormality develops, is desirable. The HSMS should be broadly useful from being used by professional health-care providers to personal in home use. It should be easy to use by first responders, military personnel, firefighters, athletes, and parents monitoring infants. The HSMS consists of a wearable device with sensor and communication circuitry, a personal computer (PC) based graphical user interface (GUI), and a base-station interface between the wireless sensor and the PC. The wearable device incorporates sensors that can provide a quick general assessment of a person???s cardio-respiratory status, temperature, and level of physical activity. The cardio-respiratory status is assessed by a pulse oximeter, which gives the percent oxygen saturation in the blood. Heart rate is derived from the pulsatile waveform of the pulse oximeter which corresponds to the cardiac cycle. Skin temperature is measured with a digital temperature sensor. A micro Secure Digital (microSD) card is used to store raw data for extended periods of time. The sensors for vital data acquisition are non-invasive and do not require a professional health care provider for attachment to the body. The system is configurable to accommodate different applications. For continuous patient monitoring, the system can be configured to wirelessly transmit collected data to a computer. These data then can be sent to a physician, who then reviews the data and intervenes when necessary. For applications where a computer is out of wireless communications range, like when monitoring the effect of stressful situation on health of first responders, the data are saved on the microSD card for later review. For applications where just an alarm is necessary to indicate a breathing or heart rate abnormality, such as monitoring of infants for the detection of SIDS, for example, the system can be configured to activate the light and/or sound alarm. In this project, a small wearable wireless sensor was designed and built that incorporates multiple sensors, and all the sensors operated properly in a laboratory setting. The sensors that are less susceptible to motion artifacts, such as temperature, were easier to implement. The pulse oximeter performed well under different light conditions,… Advisors/Committee Members: Smith, Warren D..

Subjects/Keywords: Remote health monitoring; Cardio-respiratory state monitoring; Temperature monitoring; Activity monitoring

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APA (6^th Edition):

Rotar, V. (2013). Health state monitoring system design. (Masters Thesis). California State University – Sacramento. Retrieved from http://hdl.handle.net/10211.9/1943

Chicago Manual of Style (16^th Edition):

Rotar, Viorel. “Health state monitoring system design.” 2013. Masters Thesis, California State University – Sacramento. Accessed April 15, 2021. http://hdl.handle.net/10211.9/1943.

MLA Handbook (7^th Edition):

Rotar, Viorel. “Health state monitoring system design.” 2013. Web. 15 Apr 2021.

Vancouver:

Rotar V. Health state monitoring system design. [Internet] [Masters thesis]. California State University – Sacramento; 2013. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/10211.9/1943.

Council of Science Editors:

Rotar V. Health state monitoring system design. [Masters Thesis]. California State University – Sacramento; 2013. Available from: http://hdl.handle.net/10211.9/1943

University of Alberta

2. Biabangard Oskouyi, Amirhossein. Conductive Filler Modified Polymers for Structural Health Monitoring Applications.

Degree: PhD, Department of Mechanical Engineering, 2015, University of Alberta

URL: https://era.library.ualberta.ca/files/3n2041838

► In this thesis, a novel three-dimensional continuum percolation model based on Monte Carlo simulation approach was developed and employed to investigate the percolation behavior of… (more)

Subjects/Keywords: nanocmposite; polymer; Structural Health Monitoring

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APA (6^th Edition):

Biabangard Oskouyi, A. (2015). Conductive Filler Modified Polymers for Structural Health Monitoring Applications. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/3n2041838

Chicago Manual of Style (16^th Edition):

Biabangard Oskouyi, Amirhossein. “Conductive Filler Modified Polymers for Structural Health Monitoring Applications.” 2015. Doctoral Dissertation, University of Alberta. Accessed April 15, 2021. https://era.library.ualberta.ca/files/3n2041838.

MLA Handbook (7^th Edition):

Biabangard Oskouyi, Amirhossein. “Conductive Filler Modified Polymers for Structural Health Monitoring Applications.” 2015. Web. 15 Apr 2021.

Vancouver:

Biabangard Oskouyi A. Conductive Filler Modified Polymers for Structural Health Monitoring Applications. [Internet] [Doctoral dissertation]. University of Alberta; 2015. [cited 2021 Apr 15]. Available from: https://era.library.ualberta.ca/files/3n2041838.

Council of Science Editors:

Biabangard Oskouyi A. Conductive Filler Modified Polymers for Structural Health Monitoring Applications. [Doctoral Dissertation]. University of Alberta; 2015. Available from: https://era.library.ualberta.ca/files/3n2041838

University of Connecticut

3. Cremins, Matthew D. Fault Detection in Railway Track Using Piezoelectric Impedance.

Degree: MS, Mechanical Engineering, 2014, University of Connecticut

URL: https://opencommons.uconn.edu/gs_theses/630

► In this thesis, piezoelectric transducers are incorporated in an impedance-based damage detection approach for railway track health monitoring. The impedance-based damage detection approach utilizes… (more)

Subjects/Keywords: Railway Track; Impedance; Health Monitoring

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APA (6^th Edition):

Cremins, M. D. (2014). Fault Detection in Railway Track Using Piezoelectric Impedance. (Masters Thesis). University of Connecticut. Retrieved from https://opencommons.uconn.edu/gs_theses/630

Chicago Manual of Style (16^th Edition):

Cremins, Matthew D. “Fault Detection in Railway Track Using Piezoelectric Impedance.” 2014. Masters Thesis, University of Connecticut. Accessed April 15, 2021. https://opencommons.uconn.edu/gs_theses/630.

MLA Handbook (7^th Edition):

Cremins, Matthew D. “Fault Detection in Railway Track Using Piezoelectric Impedance.” 2014. Web. 15 Apr 2021.

Vancouver:

Cremins MD. Fault Detection in Railway Track Using Piezoelectric Impedance. [Internet] [Masters thesis]. University of Connecticut; 2014. [cited 2021 Apr 15]. Available from: https://opencommons.uconn.edu/gs_theses/630.

Council of Science Editors:

Cremins MD. Fault Detection in Railway Track Using Piezoelectric Impedance. [Masters Thesis]. University of Connecticut; 2014. Available from: https://opencommons.uconn.edu/gs_theses/630

University of New Mexico

4. Schnalzer, Ryan. Acoustic bandgap sensors for hot-spot damage monitoring.

Degree: Civil Engineering, 2011, University of New Mexico

URL: http://hdl.handle.net/1928/13109

► This research presents a novel, mechanically tunable sensor that utilizes the acoustic response of a polymer based acoustic bandgap (ABG) material to identify and quantify… (more)

Subjects/Keywords: Structural health monitoring; Detectors.

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APA (6^th Edition):

Schnalzer, R. (2011). Acoustic bandgap sensors for hot-spot damage monitoring. (Masters Thesis). University of New Mexico. Retrieved from http://hdl.handle.net/1928/13109

Chicago Manual of Style (16^th Edition):

Schnalzer, Ryan. “Acoustic bandgap sensors for hot-spot damage monitoring.” 2011. Masters Thesis, University of New Mexico. Accessed April 15, 2021. http://hdl.handle.net/1928/13109.

MLA Handbook (7^th Edition):

Schnalzer, Ryan. “Acoustic bandgap sensors for hot-spot damage monitoring.” 2011. Web. 15 Apr 2021.

Vancouver:

Schnalzer R. Acoustic bandgap sensors for hot-spot damage monitoring. [Internet] [Masters thesis]. University of New Mexico; 2011. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/1928/13109.

Council of Science Editors:

Schnalzer R. Acoustic bandgap sensors for hot-spot damage monitoring. [Masters Thesis]. University of New Mexico; 2011. Available from: http://hdl.handle.net/1928/13109

University of Cincinnati

5. Chintapalli, Sahithi. Transmission Scheduling Using Adaptive Neuro-Fuzzy Inference System For Minimizing Interference in Wireless Body Area Networks (WBANs).

Degree: MS, Engineering and Applied Science: Computer Science, 2015, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1447071467

► Wireless Body Area Networks (WBANs) comprise of small sensors implanted on or inside the human body. WBANs are applied in various health care areas, including… (more)

Subjects/Keywords: Computer Science; health monitoring

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APA (6^th Edition):

Chintapalli, S. (2015). Transmission Scheduling Using Adaptive Neuro-Fuzzy Inference System For Minimizing Interference in Wireless Body Area Networks (WBANs). (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1447071467

Chicago Manual of Style (16^th Edition):

Chintapalli, Sahithi. “Transmission Scheduling Using Adaptive Neuro-Fuzzy Inference System For Minimizing Interference in Wireless Body Area Networks (WBANs).” 2015. Masters Thesis, University of Cincinnati. Accessed April 15, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1447071467.

MLA Handbook (7^th Edition):

Chintapalli, Sahithi. “Transmission Scheduling Using Adaptive Neuro-Fuzzy Inference System For Minimizing Interference in Wireless Body Area Networks (WBANs).” 2015. Web. 15 Apr 2021.

Vancouver:

Chintapalli S. Transmission Scheduling Using Adaptive Neuro-Fuzzy Inference System For Minimizing Interference in Wireless Body Area Networks (WBANs). [Internet] [Masters thesis]. University of Cincinnati; 2015. [cited 2021 Apr 15]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1447071467.

Council of Science Editors:

Chintapalli S. Transmission Scheduling Using Adaptive Neuro-Fuzzy Inference System For Minimizing Interference in Wireless Body Area Networks (WBANs). [Masters Thesis]. University of Cincinnati; 2015. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1447071467

Montana State University

6. Meehan, Edward Charles. Development of embedded sensors for structural health monitiroing of wind turbine blades: Development of embedded sensors for structural health monitoring of wind turbine blades.

Degree: MS, College of Engineering, 2012, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/1852

► Monitoring a structure's response to various loading conditions is essential to being able to predict catastrophic failure of the part. There are many types of… (more)

Subjects/Keywords: Wind turbines; Structural health monitoring

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APA (6^th Edition):

Meehan, E. C. (2012). Development of embedded sensors for structural health monitiroing of wind turbine blades: Development of embedded sensors for structural health monitoring of wind turbine blades. (Masters Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/1852

Chicago Manual of Style (16^th Edition):

Meehan, Edward Charles. “Development of embedded sensors for structural health monitiroing of wind turbine blades: Development of embedded sensors for structural health monitoring of wind turbine blades.” 2012. Masters Thesis, Montana State University. Accessed April 15, 2021. https://scholarworks.montana.edu/xmlui/handle/1/1852.

MLA Handbook (7^th Edition):

Meehan, Edward Charles. “Development of embedded sensors for structural health monitiroing of wind turbine blades: Development of embedded sensors for structural health monitoring of wind turbine blades.” 2012. Web. 15 Apr 2021.

Vancouver:

Meehan EC. Development of embedded sensors for structural health monitiroing of wind turbine blades: Development of embedded sensors for structural health monitoring of wind turbine blades. [Internet] [Masters thesis]. Montana State University; 2012. [cited 2021 Apr 15]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/1852.

Council of Science Editors:

Meehan EC. Development of embedded sensors for structural health monitiroing of wind turbine blades: Development of embedded sensors for structural health monitoring of wind turbine blades. [Masters Thesis]. Montana State University; 2012. Available from: https://scholarworks.montana.edu/xmlui/handle/1/1852

Kansas State University

7. Thomas, Dustin. Corrosion detection using piezoelectric wafer active sensors.

Degree: MS, School of Family Studies and Human Services, 2021, Kansas State University

URL: http://hdl.handle.net/2097/40997

► In the early 2000’s the Air Force was very interested in developing smart structures. Of unique interest was a structure that could be equipped with… (more)

Subjects/Keywords: Corrosion detection; Structural health monitoring

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APA (6^th Edition):

Thomas, D. (2021). Corrosion detection using piezoelectric wafer active sensors. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/40997

Chicago Manual of Style (16^th Edition):

Thomas, Dustin. “Corrosion detection using piezoelectric wafer active sensors.” 2021. Masters Thesis, Kansas State University. Accessed April 15, 2021. http://hdl.handle.net/2097/40997.

MLA Handbook (7^th Edition):

Thomas, Dustin. “Corrosion detection using piezoelectric wafer active sensors.” 2021. Web. 15 Apr 2021.

Vancouver:

Thomas D. Corrosion detection using piezoelectric wafer active sensors. [Internet] [Masters thesis]. Kansas State University; 2021. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/2097/40997.

Council of Science Editors:

Thomas D. Corrosion detection using piezoelectric wafer active sensors. [Masters Thesis]. Kansas State University; 2021. Available from: http://hdl.handle.net/2097/40997

Mississippi State University

8. Parker, Danny Loren. MULTI-OBJECTIVE DESIGN OPTIMIZATION FRAMEWORK FOR STRUCTURAL HEALTH MONITORING.

Degree: PhD, Electrical and Computer Engineering, 2011, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012011-151404/ ;

► The purpose of this dissertation is to demonstrate the ability to design health monitoring systems from a systematic perspective and how, with proper sensor and… (more)

▼ The purpose of this dissertation is to demonstrate the ability to design health monitoring systems from a systematic perspective and how, with proper sensor and actuator placement, damage occurring in a structure can be detected and tracked. To this end, a design optimization was performed to determine the best locations to excite the structure and to collect data while using the minimum number of sensors. The type of sensors used in this design optimization was uni-axis accelerometers. It should be noted that the design techniques presented here are not limited to accelerometers. Instead, they allow for any type of sensor (thermal, strain, electromagnetic, etc.) and will find the optimal locations with respect to defined objective functions (sensitivity, cost, etc.). The use of model-based optimization techniques for the design of the monitoring system is driven by the desire to obtain the best performance possible from the system given what is known about the system prior to implementation. The use of a model is more systematic than human judgment and is able to take far more into account by using information about the dynamical response of a system than even an experienced structural engineer. It is understood in the context of structural modeling that no model is 100% accurate and that any designs produced using model-based techniques should be tolerant to modeling errors. Demonstrations performed in the past have shown that poorly placed sensors can be very insensitive to damage development. To perform the optimization, a multi-objective genetic algorithm (GA) was employed. The objectives of the optimization were to be highly sensitive to damage occurring in potential hot spots while also maintaining the ability to detect damage occurring elsewhere in the structure and maintaining robustness to modeling errors. Two other objectives were to minimize the number of sensors and actuators used. The optimization only considered placing accelerometers, but it could have considered different type of sensors (i.e. strain, magneto-restrictive) or any combination thereof. Advisors/Committee Members: wm. Garth Frazier (committee member), Jenny Q. Du (committee member), Nicolas Younan (chair), Randolph F. Follett (committee member).

Subjects/Keywords: Genetic Algorithm; Structural Health Monitoring; Optimization; Health Monitoring Design

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APA (6^th Edition):

Parker, D. L. (2011). MULTI-OBJECTIVE DESIGN OPTIMIZATION FRAMEWORK FOR STRUCTURAL HEALTH MONITORING. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012011-151404/ ;

Chicago Manual of Style (16^th Edition):

Parker, Danny Loren. “MULTI-OBJECTIVE DESIGN OPTIMIZATION FRAMEWORK FOR STRUCTURAL HEALTH MONITORING.” 2011. Doctoral Dissertation, Mississippi State University. Accessed April 15, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012011-151404/ ;.

MLA Handbook (7^th Edition):

Parker, Danny Loren. “MULTI-OBJECTIVE DESIGN OPTIMIZATION FRAMEWORK FOR STRUCTURAL HEALTH MONITORING.” 2011. Web. 15 Apr 2021.

Vancouver:

Parker DL. MULTI-OBJECTIVE DESIGN OPTIMIZATION FRAMEWORK FOR STRUCTURAL HEALTH MONITORING. [Internet] [Doctoral dissertation]. Mississippi State University; 2011. [cited 2021 Apr 15]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012011-151404/ ;.

Council of Science Editors:

Parker DL. MULTI-OBJECTIVE DESIGN OPTIMIZATION FRAMEWORK FOR STRUCTURAL HEALTH MONITORING. [Doctoral Dissertation]. Mississippi State University; 2011. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04012011-151404/ ;

Penn State University

9. Reiter, Joseph Brian. Viability of embedded ultrasonic sensors for structural health monitoring of concrete cracking.

Degree: 2012, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/15504

► Concrete infrastructure is an integral part of a transportation system. Concrete is used in many bridges and a large percent of the U.S. highway system.… (more)

▼ Concrete infrastructure is an integral part of a transportation system. Concrete is used in many bridges and a large percent of the U.S. highway system. Determining the condition of the concrete bridges and pavements is essential for proper maintenance of these structures. The current system for determining maintenance in the US is based on maintenance time schedules or on condition surveys performed at varying intervals. Recent developments with sensors and sensing systems could allow more frequent and even real-time monitoring of the concrete structures to determine structural health. Through the use of Structural Health Monitoring (SHM) concepts and ultrasonic embedded sensors, a system was constructed that is capable of detecting cracking in a standard ASTM C78 concrete beam specimen. The system consisted of a pulser/receiver and ultrasonic sensors. Two types of piezoelectric ultrasonic sensors were constructed and embedded in concrete beam specimens which were subjected to cracking. The first sensor was constructed using radially activated disc piezoelectric elements and the second sensor was constructed from bender, or bimorph, piezoelectric elements. Following construction of the specimens determining the detection capability of the system required the creation of cracking in the beam specimens. Idealized laboratory cracking was created by saw-cutting the beam specimens in a regular pattern and analyzing the resulting ultrasonic signals. The same procedure was then used with controlled loading to detect real cracks in a beam specimen. The resulting signal data from testing was analyzed by using a power ratio calculation which related a baseline signal power calculation to power calculated at varying times during curing, and different stages of testing. The power ratio calculation combined with the SHM test procedure and the embedded ultrasonic sensors was able to detect the sawcut crack, and the real crack created in the concrete beam specimens. Advisors/Committee Members: Shelley Marie Stoffels, Thesis Advisor/Co-Advisor, Dr Joseph Rose, Thesis Advisor/Co-Advisor.

Subjects/Keywords: Concrete; Ultrasonic; Structural Health Monitoring; Health Monitoring; Embedded Sensors; Piezoelectric

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APA (6^th Edition):

Reiter, J. B. (2012). Viability of embedded ultrasonic sensors for structural health monitoring of concrete cracking. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/15504

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Reiter, Joseph Brian. “Viability of embedded ultrasonic sensors for structural health monitoring of concrete cracking.” 2012. Thesis, Penn State University. Accessed April 15, 2021. https://submit-etda.libraries.psu.edu/catalog/15504.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Reiter, Joseph Brian. “Viability of embedded ultrasonic sensors for structural health monitoring of concrete cracking.” 2012. Web. 15 Apr 2021.

Vancouver:

Reiter JB. Viability of embedded ultrasonic sensors for structural health monitoring of concrete cracking. [Internet] [Thesis]. Penn State University; 2012. [cited 2021 Apr 15]. Available from: https://submit-etda.libraries.psu.edu/catalog/15504.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Reiter JB. Viability of embedded ultrasonic sensors for structural health monitoring of concrete cracking. [Thesis]. Penn State University; 2012. Available from: https://submit-etda.libraries.psu.edu/catalog/15504

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Cambridge

10. Selvakumaran, Sivasakthy. Interferometric Synthetic Aperture Radar for remote satellite monitoring of bridges.

Degree: PhD, 2020, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/303944

► The structural health of critical infrastructure is difficult to assess and monitor with existing methods of evaluation which rely predominantly on visual inspection and/or the… (more)

▼ The structural health of critical infrastructure is difficult to assess and monitor with existing methods of evaluation which rely predominantly on visual inspection and/or the installation of sensors to measure the in-situ performance of structures. There are vast numbers of critical structures that need to be monitored and these are often located in diverse geographical locations which are difficult and costly to access. Recent advances in satellite technologies provide the opportunity for global coverage of assets and the measurement of displacement to sub-centimetre accuracy. Such measurements could supplement existing monitoring techniques and provide asset owners with additional insights which could inform operational and maintenance decisions. Most past research within the field of Interferometric Synthetic Aperture Radar (InSAR) monitoring using satellite radar imagery focusses on widespread measurement of land areas, although there have been some case studies using InSAR to assess movements of individual structures such as dams. However, there is limited published research into the use of these techniques for accurately monitoring the displacements of individual civil engineering structures over time and relating these measurements to structural performance. This research focusses on bridges as a specific example of critical infrastructure to establish whether remote satellite monitoring can be used to measure displacements at a resolution that is sufficiently accurate for use in monitoring of performance, and examines the relevance and limitations of satellite monitoring to civil engineering applications in general. In order to assess the millimetre-scale performance of InSAR, an initial evaluation was undertaken in controlled conditions on a purpose-built test bed fitted with satellite reflectors at the National Physical Laboratory in Teddington to validate InSAR displacement measurements against traditional terrestrial in-situ displacement measurements. Subsequently, traditional sensor and surveying measurements of displacements were compared with InSAR displacement measurements at key points of interest on Waterloo Bridge and the Hammersmith Flyover. A further case study on Tadcaster Bridge was undertaken to demonstrate the potential applicability of InSAR displacement measuring techniques for monitoring bridges at risk of scour failure. Scour is the most common form of bridge collapse around the world and to date no cost-effective and widely applicable method for providing advanced warning of impending failure due to scour has been developed. Methodologies for integrating digital, structural and signal processing models for the identification and mapping of InSAR measurement points on bridge structures from SAR imagery were developed, as well as methodologies for combining satellite data with traditional surveying methods. An important outcome of this research was that through comparison of independent measurements, InSAR measurements are of a scale that is applicable to bridge monitoring. Remote…

Subjects/Keywords: Structural Health Monitoring; Bridges; Interferometric Synthetic Aperture Radar; InSAR; Remote Sensing; Bridge Monitoring; Satellite Monitoring

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APA (6^th Edition):

Selvakumaran, S. (2020). Interferometric Synthetic Aperture Radar for remote satellite monitoring of bridges. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/303944

Chicago Manual of Style (16^th Edition):

Selvakumaran, Sivasakthy. “Interferometric Synthetic Aperture Radar for remote satellite monitoring of bridges.” 2020. Doctoral Dissertation, University of Cambridge. Accessed April 15, 2021. https://www.repository.cam.ac.uk/handle/1810/303944.

MLA Handbook (7^th Edition):

Selvakumaran, Sivasakthy. “Interferometric Synthetic Aperture Radar for remote satellite monitoring of bridges.” 2020. Web. 15 Apr 2021.

Vancouver:

Selvakumaran S. Interferometric Synthetic Aperture Radar for remote satellite monitoring of bridges. [Internet] [Doctoral dissertation]. University of Cambridge; 2020. [cited 2021 Apr 15]. Available from: https://www.repository.cam.ac.uk/handle/1810/303944.

Council of Science Editors:

Selvakumaran S. Interferometric Synthetic Aperture Radar for remote satellite monitoring of bridges. [Doctoral Dissertation]. University of Cambridge; 2020. Available from: https://www.repository.cam.ac.uk/handle/1810/303944

Rochester Institute of Technology

11. Prechtl, Ian Richard. LVAD Occlusion Condition Monitoring Using State Augmented Acoustic Spectral Images.

Degree: MS, Mechanical Engineering, 2018, Rochester Institute of Technology

URL: https://scholarworks.rit.edu/theses/9884

► Each year, thousands of people die from heart disease and related illnesses due to the lack of available donor organs. Left ventricular assist devices… (more)

Subjects/Keywords: Condition monitoring; Diagnostics; Health monitoring; LVAD; Occlusion; Time-frequency

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APA (6^th Edition):

Prechtl, I. R. (2018). LVAD Occlusion Condition Monitoring Using State Augmented Acoustic Spectral Images. (Masters Thesis). Rochester Institute of Technology. Retrieved from https://scholarworks.rit.edu/theses/9884

Chicago Manual of Style (16^th Edition):

Prechtl, Ian Richard. “LVAD Occlusion Condition Monitoring Using State Augmented Acoustic Spectral Images.” 2018. Masters Thesis, Rochester Institute of Technology. Accessed April 15, 2021. https://scholarworks.rit.edu/theses/9884.

MLA Handbook (7^th Edition):

Prechtl, Ian Richard. “LVAD Occlusion Condition Monitoring Using State Augmented Acoustic Spectral Images.” 2018. Web. 15 Apr 2021.

Vancouver:

Prechtl IR. LVAD Occlusion Condition Monitoring Using State Augmented Acoustic Spectral Images. [Internet] [Masters thesis]. Rochester Institute of Technology; 2018. [cited 2021 Apr 15]. Available from: https://scholarworks.rit.edu/theses/9884.

Council of Science Editors:

Prechtl IR. LVAD Occlusion Condition Monitoring Using State Augmented Acoustic Spectral Images. [Masters Thesis]. Rochester Institute of Technology; 2018. Available from: https://scholarworks.rit.edu/theses/9884

Penn State University

12. Guers, Manton John. IN-SITU MONITORING OF REMOTE SPECIMENS USING ULTRASONIC GUIDED WAVES .

Degree: 2011, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/11445

► There are a wide variety of engineering applications where it can be advantageous to perform real time ultrasonic measurements. In structural health monitoring (SHM) applications… (more)

▼ There are a wide variety of engineering applications where it can be advantageous to perform real time ultrasonic measurements. In structural health monitoring (SHM) applications (aircraft, bridges, etc.), real time data can be used to improve safety and reduce maintenance costs. In other applications (such as carbon-carbon production and ceramic sintering) in-situ ultrasonic measurements can be used to study how a material is affected by different manufacturing conditions. Ultrasonic measurements can also be used in place of convention temperature, pressure, fluid flow, or level sensors. The work presented in this dissertation focused on studying an ultrasonic guided waves based system for performing in-situ measurements on specimens which are commonly used in the accelerated life tests conducted in materials and test reactors (MTRs). Using this system, ultrasonic waves could be sent down a thirty foot long waveguide to a specimen while locating the transducer outside of the hostile environment. Both the theoretical and experimental results demonstrated how individual components of the system influenced the monitoring capabilities. As one example, the in-situ monitoring system was studied for use in measuring the change in length of creep specimens. Successful measurements of creep elongation were demonstrated using a pulse-echo configuration of the in-situ monitoring system. In addition, the temperature dependence of the in-situ creep measurement was also studied. Both theoretical calculations and experiments showed that the temperature dependence of group velocity was approximately linear for the creep specimen geometry. ‘Blister’ specimens having a rectangular cross-section were also considered in this work. Theoretically driven semi-analytical finite element (SAFE) calculations, time-domain finite element calculations, and experimental measurements were performed to investigate guided wave propagation in this specimen. The SAFE calculations, finite element predictions, and experimental results all demonstrated good agreement. In general, the guided wave mode with the fastest group velocity appeared to be the most prominent in both the simulated and experimentally measured waveforms. Several types of defects were considered. Defects can sometimes produce temperature anomalies in the specimen. The models indicated that detection of a defect induced temperature gradient in the rectangular ‘blister’ specimen was possible. In the design and operation of an in-situ monitoring system based on guided ultrasonic waves, the transducer design plays an important roll in the performance of the system. In this work, a magnetostrictive sleeve design was tested as an alternative to a wire-wire joint configuration. Results showed that the sleeve design was effective for generating ultrasonic guided waves in the wire waveguide. In addition, the sleeve design simplifies specimen fabrication, minimizes the amount of magnetostrictive material required, and eliminates the artifacts associated with the… Advisors/Committee Members: Bernhard R Tittmann, Dissertation Advisor/Co-Advisor, Bernhard R Tittmann, Committee Chair/Co-Chair, Joseph Lawrence Rose, Committee Member, Clifford Jesse Lissenden Iii, Committee Member, Albert Eliot Segall, Committee Member, Karl Martin Reichard, Committee Member.

Subjects/Keywords: structural health monitoring; remote monitoring; ultrasonic guided wave

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APA (6^th Edition):

Guers, M. J. (2011). IN-SITU MONITORING OF REMOTE SPECIMENS USING ULTRASONIC GUIDED WAVES . (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/11445

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Guers, Manton John. “IN-SITU MONITORING OF REMOTE SPECIMENS USING ULTRASONIC GUIDED WAVES .” 2011. Thesis, Penn State University. Accessed April 15, 2021. https://submit-etda.libraries.psu.edu/catalog/11445.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Guers, Manton John. “IN-SITU MONITORING OF REMOTE SPECIMENS USING ULTRASONIC GUIDED WAVES .” 2011. Web. 15 Apr 2021.

Vancouver:

Guers MJ. IN-SITU MONITORING OF REMOTE SPECIMENS USING ULTRASONIC GUIDED WAVES . [Internet] [Thesis]. Penn State University; 2011. [cited 2021 Apr 15]. Available from: https://submit-etda.libraries.psu.edu/catalog/11445.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Guers MJ. IN-SITU MONITORING OF REMOTE SPECIMENS USING ULTRASONIC GUIDED WAVES . [Thesis]. Penn State University; 2011. Available from: https://submit-etda.libraries.psu.edu/catalog/11445

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Colorado State University

13. Wilcox, Chad M. Application of structural health monitoring for damage identification in an industrial fan rotor using in-situ modal analysis testing.

Degree: MS(M.S.), Mechanical Engineering, 2014, Colorado State University

URL: http://hdl.handle.net/10217/84575

► A testing procedure is desired which can be applied in manufacturing environments to determine the structural integrity of rotating components within a machine. Current non-destructive… (more)

Subjects/Keywords: condition monitoring; fan; modal analysis; NTD; structural health monitoring; vibration analysis

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APA (6^th Edition):

Wilcox, C. M. (2014). Application of structural health monitoring for damage identification in an industrial fan rotor using in-situ modal analysis testing. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/84575

Chicago Manual of Style (16^th Edition):

Wilcox, Chad M. “Application of structural health monitoring for damage identification in an industrial fan rotor using in-situ modal analysis testing.” 2014. Masters Thesis, Colorado State University. Accessed April 15, 2021. http://hdl.handle.net/10217/84575.

MLA Handbook (7^th Edition):

Wilcox, Chad M. “Application of structural health monitoring for damage identification in an industrial fan rotor using in-situ modal analysis testing.” 2014. Web. 15 Apr 2021.

Vancouver:

Wilcox CM. Application of structural health monitoring for damage identification in an industrial fan rotor using in-situ modal analysis testing. [Internet] [Masters thesis]. Colorado State University; 2014. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/10217/84575.

Council of Science Editors:

Wilcox CM. Application of structural health monitoring for damage identification in an industrial fan rotor using in-situ modal analysis testing. [Masters Thesis]. Colorado State University; 2014. Available from: http://hdl.handle.net/10217/84575

Hong Kong University of Science and Technology

14. Chen, Xinxing CIVL. Development of crack growth sensors using moiré technique.

Degree: 2018, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-97730 ; https://doi.org/10.14711/thesis-991012663068403412 ; http://repository.ust.hk/ir/bitstream/1783.1-97730/1/th_redirect.html

► High-accuracy crack growth monitoring is crucial for the health assessment of concrete structures, and different kinds of crack growth sensors have been developed and applied… (more)

Subjects/Keywords: Concrete ; Cracking ; Measurement ; Monitoring ; Structural health monitoring ; Moiré method

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APA (6^th Edition):

Chen, X. C. (2018). Development of crack growth sensors using moiré technique. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-97730 ; https://doi.org/10.14711/thesis-991012663068403412 ; http://repository.ust.hk/ir/bitstream/1783.1-97730/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chen, Xinxing CIVL. “Development of crack growth sensors using moiré technique.” 2018. Thesis, Hong Kong University of Science and Technology. Accessed April 15, 2021. http://repository.ust.hk/ir/Record/1783.1-97730 ; https://doi.org/10.14711/thesis-991012663068403412 ; http://repository.ust.hk/ir/bitstream/1783.1-97730/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chen, Xinxing CIVL. “Development of crack growth sensors using moiré technique.” 2018. Web. 15 Apr 2021.

Vancouver:

Chen XC. Development of crack growth sensors using moiré technique. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2018. [cited 2021 Apr 15]. Available from: http://repository.ust.hk/ir/Record/1783.1-97730 ; https://doi.org/10.14711/thesis-991012663068403412 ; http://repository.ust.hk/ir/bitstream/1783.1-97730/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chen XC. Development of crack growth sensors using moiré technique. [Thesis]. Hong Kong University of Science and Technology; 2018. Available from: http://repository.ust.hk/ir/Record/1783.1-97730 ; https://doi.org/10.14711/thesis-991012663068403412 ; http://repository.ust.hk/ir/bitstream/1783.1-97730/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

15. Milosevic, Marko (author). Structural Health Monitoring of the Zwartewaterbrug Bridge.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:476726ad-1467-4a30-83aa-196c9a2d29b7

► Vibration-based structural health monitoring of civil engineering structures is receiving increasing attention in recent years. This is due to the development of more robust system… (more)

▼ Vibration-based structural health monitoring of civil engineering structures is receiving increasing attention in recent years. This is due to the development of more robust system identification techniques as well as improvements with regard to the practicality of installing the necessary instrumentation. Health monitoring systems are more often replacing static deflection tests and detailed visual inspections, where continuous monitoring of vibration data aims for early damage detection. This thesis can be summarized as the development of a structural health monitoring method for bridges. It forms a part of the Zwartewaterbrug project, related to the Zwartewater bridge located in the city of Hasselt, in the Dutch province of Overijssel. The Zwartewater bridge served as a case study for validation of the proposed early damage detection algorithm. The wider purpose of this work was to address the problem of having a large number of bridges in Europe that are facing the end of their service life and should either be retrofitted or decommissioned.. The chosen approach consisted of a low-cost vibration monitoring method, that is suitable for continuous structural health monitoring. The initial challenge was to introduce a small change to the structure, representative of early damage, without actually damaging the structure. For this an added mass approach was taken, where weights of respectively 25, 50, 75, and 100 kg were added below the bridge deck. The vibration data (accelerations) measured on the ”damaged” structure were then used to solve an inverse problem where the aim was to detect the induced damage without closing the bridge to traffic. Since the data was gathered with only ambient excitation by wind and traffic, a new challenge arose, which is considered to be the core of this thesis. The structural differences between vibration measurements related to the ”healthy” and ”damaged” structure were concluded to be smaller than the structural changes due to the differences in unknown traffic loading. The traffic loads were namely varying from 200kg motorcycles to 50t trucks. In this thesis, the method of Probabilistic Filtering was developed to face the aforementioned challenge. The method involves mainly a data pre-processing step, and the probabilistically filtered signals are subsequently processed with two output-only identification methods: Frequency Domain Decomposition and data-driven Stochastic Subspace Identification. The full process was integrated into an automatic analysis algorithm, performed in MatLab. It was concluded that both detection and localization of the induced damage is possible with the proposed methodology. Further work was then performed to quantify the detected added mass in terms of structural damage. A quantitative finite element analysis was performed with the substructure approach (super-element, static boundary conditions to the substructure of interest). The given analysis concluded that the developed structural health… Advisors/Committee Members: Lourens, Eliz-Mari (mentor), Metrikine, Andrei (mentor), Pavlovic, Marko (mentor), Fallais, Dominik (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Probabilistic Filtering; Structural Health Monitoring (SHM); Vibration-based monitoring; Zwartewaterbrug bridge

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APA (6^th Edition):

Milosevic, M. (. (2018). Structural Health Monitoring of the Zwartewaterbrug Bridge. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:476726ad-1467-4a30-83aa-196c9a2d29b7

Chicago Manual of Style (16^th Edition):

Milosevic, Marko (author). “Structural Health Monitoring of the Zwartewaterbrug Bridge.” 2018. Masters Thesis, Delft University of Technology. Accessed April 15, 2021. http://resolver.tudelft.nl/uuid:476726ad-1467-4a30-83aa-196c9a2d29b7.

MLA Handbook (7^th Edition):

Milosevic, Marko (author). “Structural Health Monitoring of the Zwartewaterbrug Bridge.” 2018. Web. 15 Apr 2021.

Vancouver:

Milosevic M(. Structural Health Monitoring of the Zwartewaterbrug Bridge. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Apr 15]. Available from: http://resolver.tudelft.nl/uuid:476726ad-1467-4a30-83aa-196c9a2d29b7.

Council of Science Editors:

Milosevic M(. Structural Health Monitoring of the Zwartewaterbrug Bridge. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:476726ad-1467-4a30-83aa-196c9a2d29b7

Hong Kong University of Science and Technology

16. Cheng, Yu CIVL. Development of a capacitive sensor for concrete structure health monitoring.

Degree: 2017, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-105591 ; https://doi.org/10.14711/thesis-991012551768903412 ; http://repository.ust.hk/ir/bitstream/1783.1-105591/1/th_redirect.html

► Considering the limitations of the current structure health monitoring techniques, a novel low-cost capacitive transducer (CT) using capacitance signals, which has the potential to provide… (more)

▼ Considering the limitations of the current structure health monitoring techniques, a novel low-cost capacitive transducer (CT) using capacitance signals, which has the potential to provide accurate health assessment and damage prediction for reinforcement concrete structures, is firstly developed in this study. Four major works including the development of the capacitive sensor, the optimization work of CT sensor design, the application of the CT in rebar size/depth/position and rebar corrosion tests using the developed CT are mainly introduced. In the sensor development process, two designs of capacitive transducers are discussed for condition assessment of rebar and concrete, respectively. In order to verify the effectiveness of the designed capacitive sensor, five preliminary experiments are conducted and the experiments results also showed that CT signals could be applied to predict rebar positions inside the concrete. Finally, FEM simulations were implemented for the last experiment, and comparison results have well verified the effectiveness of the developed capacitive sensor. In the sensor optimization work, performances of different parameters in terms of electrodes size/shape, concrete length, electrodes spacing and rebar size are compared in order to get an optimized sensitivity in the rebar depth testing. In the rebar size/depth/position test, both numerical simulations and experiments have been carried out to verify the effectiveness of the developed capacitive sensor. Results have shown that the developed CT with innovative capacitance measuring method has great accuracy in predicting the rebar size and position, which is the foundation of the reinforcement corrosion detection. In the corrosion testing part, a novel corrosion development model according to the increase of rust layer thickness is firstly proposed and direct quantitative relationship between the capacitance outputs and the rust layer thickness is built to measure the corrosion degree. Apart from uniform corrosion testing, localized corrosion testing including half-rebar corrosion, side corrosion and various banding layer corrosion have been implemented to verify the function of the CT technique. It can be concluded that the developed capacitive transducer is applicable in the condition tests of reinforced concrete structures and it paves the way for quantitatively evaluate the corrosion degree of the reinforced rebar.

Subjects/Keywords: Reinforced concrete construction ; Monitoring ; Structural health monitoring ; Detectors ; Industrial applications

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APA (6^th Edition):

Cheng, Y. C. (2017). Development of a capacitive sensor for concrete structure health monitoring. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-105591 ; https://doi.org/10.14711/thesis-991012551768903412 ; http://repository.ust.hk/ir/bitstream/1783.1-105591/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cheng, Yu CIVL. “Development of a capacitive sensor for concrete structure health monitoring.” 2017. Thesis, Hong Kong University of Science and Technology. Accessed April 15, 2021. http://repository.ust.hk/ir/Record/1783.1-105591 ; https://doi.org/10.14711/thesis-991012551768903412 ; http://repository.ust.hk/ir/bitstream/1783.1-105591/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cheng, Yu CIVL. “Development of a capacitive sensor for concrete structure health monitoring.” 2017. Web. 15 Apr 2021.

Vancouver:

Cheng YC. Development of a capacitive sensor for concrete structure health monitoring. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2017. [cited 2021 Apr 15]. Available from: http://repository.ust.hk/ir/Record/1783.1-105591 ; https://doi.org/10.14711/thesis-991012551768903412 ; http://repository.ust.hk/ir/bitstream/1783.1-105591/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cheng YC. Development of a capacitive sensor for concrete structure health monitoring. [Thesis]. Hong Kong University of Science and Technology; 2017. Available from: http://repository.ust.hk/ir/Record/1783.1-105591 ; https://doi.org/10.14711/thesis-991012551768903412 ; http://repository.ust.hk/ir/bitstream/1783.1-105591/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas Tech University

17. Rodriguez, Stephen. Structural Health Monitoring System utilizing Software Defined Radar Sensors to create a Wireless Smart Sensor Network.

Degree: 2013, Texas Tech University

URL: http://hdl.handle.net/2346/48862

► Structural Health Monitoring demands a multi sensor network that is not only cost effective and power controlled but also fists a small form factor. The… (more)

Subjects/Keywords: Structural health monitoring; Wireless sensor; Transponder; Dynamic monitoring; Radar sensor

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APA (6^th Edition):

Rodriguez, S. (2013). Structural Health Monitoring System utilizing Software Defined Radar Sensors to create a Wireless Smart Sensor Network. (Thesis). Texas Tech University. Retrieved from http://hdl.handle.net/2346/48862

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rodriguez, Stephen. “Structural Health Monitoring System utilizing Software Defined Radar Sensors to create a Wireless Smart Sensor Network.” 2013. Thesis, Texas Tech University. Accessed April 15, 2021. http://hdl.handle.net/2346/48862.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rodriguez, Stephen. “Structural Health Monitoring System utilizing Software Defined Radar Sensors to create a Wireless Smart Sensor Network.” 2013. Web. 15 Apr 2021.

Vancouver:

Rodriguez S. Structural Health Monitoring System utilizing Software Defined Radar Sensors to create a Wireless Smart Sensor Network. [Internet] [Thesis]. Texas Tech University; 2013. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/2346/48862.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rodriguez S. Structural Health Monitoring System utilizing Software Defined Radar Sensors to create a Wireless Smart Sensor Network. [Thesis]. Texas Tech University; 2013. Available from: http://hdl.handle.net/2346/48862

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

18. Griffin, Kenneth R. Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment.

Degree: PhD, Mining Engineering, 2013, Virginia Tech

URL: http://hdl.handle.net/10919/23299

► Explosions of gas and dust continue to be recognized as an extreme danger in underground coal mines and still occur despite significant technological advances. Mining… (more)

▼ Explosions of gas and dust continue to be recognized as an extreme danger in underground coal mines and still occur despite significant technological advances. Mining researchers have been attempting to accurately measure and quantify ventilation and gas properties since early mining; however basic monitoring attempts were limited by the available technologies. Recent advancements in monitoring and communication technologies enable comprehensive atmospheric monitoring to become feasible on a mine-wide scale. Atmospheric monitoring systems (AMS) allow operators to monitor conditions underground in real-time. Real-time monitoring enables operators to detect and identify developing high risk areas of the mine, as well as quickly alert mining personnel underground. Real-time monitoring also can determine whether conditions are safe for mining, to operate ventilation systems more efficiently, and to provide an additional layer of monitoring atmospheric conditions underground. AMS utilizes numerous monitoring technologies that will allow underground coal mines to comprehensively monitor gas and ventilation parameters. AMS are utilized worldwide as well as in the United States, and can be modified to cater to specific hazards at different mines. In the United States, AMS are primarily used to monitor belt lines and electrical installations for smoke, CO, and CH4, and to automatically alarm at set thresholds. The research in this study investigates and analyzed AMS across the world (specifically Australia, Canada, and United States). Two case studies presented in Chapter 5 focus on the utilization and implementation of AMS in two underground coal mines in the United States. These case studies identify challenges regarding installation, data management, and analysis of real-time atmospheric monitoring data. The second case study provides significant evidence that correlates mine ventilation fan outages and changes in barometric pressure to increases in methane from previous works. This research does not attempt to quantify data, but intends to provide engineers knowledge to utilize, design, and implement an AMS. Several incident scenarios are simulated using ventilation computer software, as well as the benefits of monitoring in past disasters are analyzed. This research does not intend to place blame, but intends to increase the understanding of utilizing and implementing AMS in underground coal mines. Advisors/Committee Members: Luxbacher, Kramer Davis (committeechair), Karmis, Michael E. (committeechair), Westman, Erik Christian (committee member), Suboleski, Stanley C. (committee member), Martikainen, Anu Leena (committee member), Luttrell, Gerald H. (committee member), Agioutantis, Zacharias (committee member).

Subjects/Keywords: mining atmospheric monitoring; underground monitoring; mine health and safety; mine explosions

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APA (6^th Edition):

Griffin, K. R. (2013). Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/23299

Chicago Manual of Style (16^th Edition):

Griffin, Kenneth R. “Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment.” 2013. Doctoral Dissertation, Virginia Tech. Accessed April 15, 2021. http://hdl.handle.net/10919/23299.

MLA Handbook (7^th Edition):

Griffin, Kenneth R. “Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment.” 2013. Web. 15 Apr 2021.

Vancouver:

Griffin KR. Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment. [Internet] [Doctoral dissertation]. Virginia Tech; 2013. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/10919/23299.

Council of Science Editors:

Griffin KR. Utilization and Implementation of Atmospheric Monitoring Systems in United States Underground Coal Mines and Application of Risk Assessment. [Doctoral Dissertation]. Virginia Tech; 2013. Available from: http://hdl.handle.net/10919/23299

University of Oklahoma

19. Yazdani, Hessam. LABORATORY DEVELOPMENT AND MOLECULAR-SCALE SIMULATION OF SENSOR-ENABLED GEOGRIDS.

Degree: PhD, 2015, University of Oklahoma

URL: http://hdl.handle.net/11244/23312

► Structural health monitoring (SHM) and performance assessment are increasingly integrated to modern civil engineering projects in order to prevent and mitigate their catastrophic premature failures.… (more)

▼ Structural health monitoring (SHM) and performance assessment are increasingly integrated to modern civil engineering projects in order to prevent and mitigate their catastrophic premature failures. Significant advancements in sensor and communication technologies during the last decades have boosted research on SHM and revolutionized its traditional and low-tech techniques. Inherent variability and uncertainties in soils arising from different sources (e.g. data insufficiency) pose significant challenges to the design of geosystems (e.g. geosynthetically-modified structures), but the increasing trend in using SHM and performance evaluation techniques could offer substantial help in counterbalancing the design uncertainties and to identify the impending failure of high-risk geosystems. Strain gauges, optical fibers and extensometers are current technologies to measure strains in geosynthetics where the sensing is achieved by attaching these devices to a geosynthetic layer in desirable positions. However, these devices require complex and expensive data acquisition systems to collect information. Also, strain gauges attached to a reinforcement material need to be calibrated against global strains from crosshead displacements in in-isolation tensile tests. However, the resulting calibration factors are typically not accurate when the reinforcement layer is embedded in soil due to the local stiffening effect of the bonding assembly, difference in the in-soil mechanical properties and other complications such as soil arching. During the last few years, a novel technique has been under development at the University of Oklahoma based on the strain sensitivity of polymer nanocomposites to measure the tensile strain in modified geosynthetics without the need for conventional instrumentation. In this technique, electrically-conductive fillers are used to induce conductivity in geosynthetics in order to produce sensor-enabled geosynthetics (SEG). The electrical conductivity of a SEG product with a prescribed concentration of a conductive filler is highly sensitive to the applied strain, affording the product the self-sensing function. As part of this long-term study to develop SEG materials, an interdisciplinary study was carried out as described in this dissertation to develop sensor-enabled geogrids (SEGG) through laboratory experiments and molecular-scale simulations. The study yielded several formulations and production processes in the laboratory to fabricate nanocomposites that would exhibit adequate mechanical and strain-sensitive electrical properties for SEGG applications. Molecular dynamics and Monte Carlo simulations were used to gain insight into the laboratory results on a more fundamental level. The molecular dynamics simulations were carried out to study the mechanical properties of the composites whereas Monte Carlo simulations were used to examine their electrical conductivity (i.e. percolation) behavior. Results showed that, contingent upon further development and addressing practical issues such as… Advisors/Committee Members: Hatami, Kianoosh (advisor), Miller, Gerald (committee member), Grady, Brian (committee member), Smith, Benjamin (committee member), Cerato, Amy (committee member).

Subjects/Keywords: Health monitoring; Performance monitoring; Geosynthetics; Geogrids; Smart materials; Nanocomposites; Polymer composites

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APA (6^th Edition):

Yazdani, H. (2015). LABORATORY DEVELOPMENT AND MOLECULAR-SCALE SIMULATION OF SENSOR-ENABLED GEOGRIDS. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/23312

Chicago Manual of Style (16^th Edition):

Yazdani, Hessam. “LABORATORY DEVELOPMENT AND MOLECULAR-SCALE SIMULATION OF SENSOR-ENABLED GEOGRIDS.” 2015. Doctoral Dissertation, University of Oklahoma. Accessed April 15, 2021. http://hdl.handle.net/11244/23312.

MLA Handbook (7^th Edition):

Yazdani, Hessam. “LABORATORY DEVELOPMENT AND MOLECULAR-SCALE SIMULATION OF SENSOR-ENABLED GEOGRIDS.” 2015. Web. 15 Apr 2021.

Vancouver:

Yazdani H. LABORATORY DEVELOPMENT AND MOLECULAR-SCALE SIMULATION OF SENSOR-ENABLED GEOGRIDS. [Internet] [Doctoral dissertation]. University of Oklahoma; 2015. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/11244/23312.

Council of Science Editors:

Yazdani H. LABORATORY DEVELOPMENT AND MOLECULAR-SCALE SIMULATION OF SENSOR-ENABLED GEOGRIDS. [Doctoral Dissertation]. University of Oklahoma; 2015. Available from: http://hdl.handle.net/11244/23312

University of Cincinnati

20. Dandino, Charles M. Condition Monitoring Sensor for Reinforced Elastomeric Materials.

Degree: MS, Engineering and Applied Science: Mechanical Engineering, 2012, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352485050

► In-situ monitoring of materials is a great problem in the field of structural health monitoring. The ability to receive real time data relaying the… (more)

Subjects/Keywords: Mechanics; Structural Health Monitoring; Elastomer; Sensor; Condition Monitoring; Prognostics

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APA (6^th Edition):

Dandino, C. M. (2012). Condition Monitoring Sensor for Reinforced Elastomeric Materials. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352485050

Chicago Manual of Style (16^th Edition):

Dandino, Charles M. “Condition Monitoring Sensor for Reinforced Elastomeric Materials.” 2012. Masters Thesis, University of Cincinnati. Accessed April 15, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352485050.

MLA Handbook (7^th Edition):

Dandino, Charles M. “Condition Monitoring Sensor for Reinforced Elastomeric Materials.” 2012. Web. 15 Apr 2021.

Vancouver:

Dandino CM. Condition Monitoring Sensor for Reinforced Elastomeric Materials. [Internet] [Masters thesis]. University of Cincinnati; 2012. [cited 2021 Apr 15]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352485050.

Council of Science Editors:

Dandino CM. Condition Monitoring Sensor for Reinforced Elastomeric Materials. [Masters Thesis]. University of Cincinnati; 2012. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352485050

Dalhousie University

21. Vickers, Philip. Joint Movement Models for Angus L. Macdonald Suspension Bridge.

Degree: Master of Applied Science, Department of Civil Engineering, 2014, Dalhousie University

URL: http://hdl.handle.net/10222/54093

► The Angus L. Macdonald (ALM) Suspension Bridge spans the Halifax Harbour linking the Halifax Peninsula with Dartmouth, Nova Scotia. The ALM was first opened in… (more)

▼ The Angus L. Macdonald (ALM) Suspension Bridge spans the Halifax Harbour linking the Halifax Peninsula with Dartmouth, Nova Scotia. The ALM was first opened in 1955 and currently accommodates approximately 50,000 crossings on a typical workday. As with any aging infrastructure the need for maintenance and rehabilitation exists, which requires adequate engineering knowledge of the structure. This study will investigate the expansion joint movement at the main tower locations of the bridge. Halifax Harbour Bridges (HHB) wishes to understand the range of the expansion joint movement and thereby minimize the cost of future joints. There is uncertainty as to whether the Canadian Highway Bridge Design Code (CHBDC CAN/CSA S6-06) over estimates the required range of movement of the expansion joints for long span structures. In late June of 2012, a field-monitoring program was developed to monitor the joint movement. The deck at each tower of the ALM was instrumented with displacement sensors to measure and record longitudinal movement of the main and side spans with respect to the main towers. Weather conditions were also recorded by a weather station located at the midpoint of the bridge. In order to better understand the actual in-service movement ranges, numerical models were developed to characterize movements at the expansion joint locations for variations in thermal, wind, and traffic loads. Analysis of the collected monitoring data was completed to identify correlations between movement and different loading variations. Thermal variations were found to have the largest effect on expansion joint movement. Wind was also found to have a significant effect on expansion joint movement while traffic loads were found to have the least impact on movement. Extreme environmental conditions were fed into the numerical models to determine extreme movement ranges for thermal, wind, and traffic loads. Advisors/Committee Members: n/a (external-examiner), Dr. Hany El Naggar (graduate-coordinator), Dr. Fenton (thesis-reader), Dr. Habib (thesis-reader), Dr. John Newhook (thesis-supervisor), Not Applicable (ethics-approval), Not Applicable (manuscripts), Not Applicable (copyright-release).

Subjects/Keywords: Structural health monitoring; Joint movement; Suspension bridge

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APA (6^th Edition):

Vickers, P. (2014). Joint Movement Models for Angus L. Macdonald Suspension Bridge. (Masters Thesis). Dalhousie University. Retrieved from http://hdl.handle.net/10222/54093

Chicago Manual of Style (16^th Edition):

Vickers, Philip. “Joint Movement Models for Angus L. Macdonald Suspension Bridge.” 2014. Masters Thesis, Dalhousie University. Accessed April 15, 2021. http://hdl.handle.net/10222/54093.

MLA Handbook (7^th Edition):

Vickers, Philip. “Joint Movement Models for Angus L. Macdonald Suspension Bridge.” 2014. Web. 15 Apr 2021.

Vancouver:

Vickers P. Joint Movement Models for Angus L. Macdonald Suspension Bridge. [Internet] [Masters thesis]. Dalhousie University; 2014. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/10222/54093.

Council of Science Editors:

Vickers P. Joint Movement Models for Angus L. Macdonald Suspension Bridge. [Masters Thesis]. Dalhousie University; 2014. Available from: http://hdl.handle.net/10222/54093

22. Tran, Vinh. Remote coach: a remote health sensor data monitoring system.

Degree: MS, Computer Science, 2013, California State University – Northridge

URL: http://hdl.handle.net/10211.2/2837

► A key challenge in wearable health systems is obtaining continuous blood pressure information. This thesis presents a mobile wireless cuff-less blood pressure system for continuous… (more)

Subjects/Keywords: Health monitoring; Dissertations, Academic – CSUN – Computer Science.

10 more images…

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APA (6^th Edition):

Tran, V. (2013). Remote coach: a remote health sensor data monitoring system. (Masters Thesis). California State University – Northridge. Retrieved from http://hdl.handle.net/10211.2/2837

Chicago Manual of Style (16^th Edition):

Tran, Vinh. “Remote coach: a remote health sensor data monitoring system.” 2013. Masters Thesis, California State University – Northridge. Accessed April 15, 2021. http://hdl.handle.net/10211.2/2837.

MLA Handbook (7^th Edition):

Tran, Vinh. “Remote coach: a remote health sensor data monitoring system.” 2013. Web. 15 Apr 2021.

Vancouver:

Tran V. Remote coach: a remote health sensor data monitoring system. [Internet] [Masters thesis]. California State University – Northridge; 2013. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/10211.2/2837.

Council of Science Editors:

Tran V. Remote coach: a remote health sensor data monitoring system. [Masters Thesis]. California State University – Northridge; 2013. Available from: http://hdl.handle.net/10211.2/2837

Texas A&M University

23. Jiang, Shu. Structural Health Monitoring for Small Diameter Pipes with Guided Ultrasonic Wave.

Degree: PhD, Mechanical Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/161307

► The structural health monitoring (SHM) paradigm includes device design for data acquisition and signal processing for defect visualization. An excitation is applied to the interested… (more)

▼ The structural health monitoring (SHM) paradigm includes device design for data acquisition and signal processing for defect visualization. An excitation is applied to the interested structure to generate vibration which is measured and analyzed to reveal structural defects. Guided ultrasonic wave (GUW) has proved to be effective as an excitation for shell SHM. Device settings and corresponding signal processing methods have been proposed to detect defects over plate and plate-like structures. However, there is no effective SHM paradigm for small diameter pipes having salient curvatures. By utilizing GUW, we proposed three methods for SHM over pipes for different application backgrounds. The first method detects the defect axial position. Measurements are acquired by our innovative dual transducer array design and are processed with the Multiple Signal Classification (MUSIC) signal processing method. The defect position is predicated accurately and efficiently, which is very adaptive for SHM over long pipes. However, it fails to predicate the defect circumferential position. The second method detects both defect axial and circumferential positions. Measurements are acquired via the same transducer array setting as the previous method, and are processed by a novel method, Geodesic Distance MUSIC (GD-MUSIC) method, based on the assumption that the defect-reflected GUW only travels along the geodesic path embedded in pipe surfaces. It predicates the defect axial and circumferential positions accurately for single-defect cases. However, the detection accuracy is affected if it is applied to multiple-defect cases because the geodesic assumption does not hold, which inspires us to design the third method. The third method detects multiple defects as well as a single defect over pipes. After being acquired by the dual array setting, measurements are processed by an innovative statistical Predominant Component Voting MUSIC (PCV-MUSIC) method, which identifies defect locations on aggregation of a trove of inaccurate detection results. A pipe is unwrapped regarding different axial cuts to form different voters. Votes casted by voters are pipe images of voters obtained from MUSIC method. The polling result predicates both axial and circumferential defect positions even for multiple defects. Finally, all methods are validated by multiple simulation cases. Advisors/Committee Members: Lau, Sai (advisor), Liang, Hong (committee member), Kim, Won-Jong (committee member), Chen, Hamn-Ching (committee member).

Subjects/Keywords: Structural Health Monitoring; Guided Ultrasonic Wave

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APA (6^th Edition):

Jiang, S. (2017). Structural Health Monitoring for Small Diameter Pipes with Guided Ultrasonic Wave. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/161307

Chicago Manual of Style (16^th Edition):

Jiang, Shu. “Structural Health Monitoring for Small Diameter Pipes with Guided Ultrasonic Wave.” 2017. Doctoral Dissertation, Texas A&M University. Accessed April 15, 2021. http://hdl.handle.net/1969.1/161307.

MLA Handbook (7^th Edition):

Jiang, Shu. “Structural Health Monitoring for Small Diameter Pipes with Guided Ultrasonic Wave.” 2017. Web. 15 Apr 2021.

Vancouver:

Jiang S. Structural Health Monitoring for Small Diameter Pipes with Guided Ultrasonic Wave. [Internet] [Doctoral dissertation]. Texas A&M University; 2017. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/1969.1/161307.

Council of Science Editors:

Jiang S. Structural Health Monitoring for Small Diameter Pipes with Guided Ultrasonic Wave. [Doctoral Dissertation]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/161307

University of Saskatchewan

24. Lung, Bryan C. A structural health monitoring system for composite pressure vessels.

Degree: 2005, University of Saskatchewan

URL: http://hdl.handle.net/10388/etd-04042005-133006

► Vehicles that run on compressed natural gas and hydrogen are currently being developed to reduce greenhouse gas emissions and smog. To meet the need for… (more)

▼ Vehicles that run on compressed natural gas and hydrogen are currently being developed to reduce greenhouse gas emissions and smog. To meet the need for a safe, reliable fuel storage system, a low-cost, acoustic-ultrasonic system has been developed to detect damage in high-pressure storage cylinders made of Carbon Fiber Reinforced Polymers (CFRP). This structural health monitoring system could lead to lighter, lower cost cylinders, and improved safety in automotive applications that utilize hydrogen and natural gas.Several Non-Deconstructive Evaluation (NDE) techniques were investigated in the course of this work, and low-cost piezo-film sensors were selected to monitor the cylinder. These sensors were integrated into the carbon fiber structure, resulting in a sensor network that can be used for real-time structural health monitoring of composite cylinders. The system was operated by exciting the piezo-film sensors with an impulse and then the corresponding structural response (or signature) was measured and analyzed. This was compared to a previously measured response and evaluated for changes which can indicate failures in the tank. The analysis reduces the changes in the structural response to a single damage coefficient, which can then be used for malfunction indication and decision making in an automotive on-board microprocessor control system.The technology can be deployed at a reasonable cost, and has been designed to accurately detect damage with little or no maintenance required. Thirty cylinders were used in a test matrix to examine all possible failure mechanisms of the tanks, including: fatigue, cuts and gouges, impact and delaminations, stress rupture, heat damage, and combinations of these damage mechanisms. The damage detection system was capable of detecting damage long before a critical condition arose for all cases. However, further development and testing into larger cylinder designs and testing is still required to develop a final commercial product. Advisors/Committee Members: Sulatisky, Michael T., Schoenau, Greg J., Reeves, Malcolm J., Habibi, Saeid R., Fotouhi, Reza, Burton, Richard T..

Subjects/Keywords: Structural Health Monitoring

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APA (6^th Edition):

Lung, B. C. (2005). A structural health monitoring system for composite pressure vessels. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/etd-04042005-133006

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lung, Bryan C. “A structural health monitoring system for composite pressure vessels.” 2005. Thesis, University of Saskatchewan. Accessed April 15, 2021. http://hdl.handle.net/10388/etd-04042005-133006.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lung, Bryan C. “A structural health monitoring system for composite pressure vessels.” 2005. Web. 15 Apr 2021.

Vancouver:

Lung BC. A structural health monitoring system for composite pressure vessels. [Internet] [Thesis]. University of Saskatchewan; 2005. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/10388/etd-04042005-133006.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lung BC. A structural health monitoring system for composite pressure vessels. [Thesis]. University of Saskatchewan; 2005. Available from: http://hdl.handle.net/10388/etd-04042005-133006

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Connecticut

25. Dahal, Sushil. Structural Health Monitoring for In-Service Highway Bridges Using Smart Sensors.

Degree: MS, Civil Engineering, 2013, University of Connecticut

URL: https://opencommons.uconn.edu/gs_theses/381

► With the rapid development of electrical circuits, Microelectromechanical system (MEMS) and network technology, wireless smart sensor networks (WSSN) have shown significant potential for replacing… (more)

Subjects/Keywords: Structural Health Monitoring; Damage Detection; Wireless Sensor

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APA (6^th Edition):

Dahal, S. (2013). Structural Health Monitoring for In-Service Highway Bridges Using Smart Sensors. (Masters Thesis). University of Connecticut. Retrieved from https://opencommons.uconn.edu/gs_theses/381

Chicago Manual of Style (16^th Edition):

Dahal, Sushil. “Structural Health Monitoring for In-Service Highway Bridges Using Smart Sensors.” 2013. Masters Thesis, University of Connecticut. Accessed April 15, 2021. https://opencommons.uconn.edu/gs_theses/381.

MLA Handbook (7^th Edition):

Dahal, Sushil. “Structural Health Monitoring for In-Service Highway Bridges Using Smart Sensors.” 2013. Web. 15 Apr 2021.

Vancouver:

Dahal S. Structural Health Monitoring for In-Service Highway Bridges Using Smart Sensors. [Internet] [Masters thesis]. University of Connecticut; 2013. [cited 2021 Apr 15]. Available from: https://opencommons.uconn.edu/gs_theses/381.

Council of Science Editors:

Dahal S. Structural Health Monitoring for In-Service Highway Bridges Using Smart Sensors. [Masters Thesis]. University of Connecticut; 2013. Available from: https://opencommons.uconn.edu/gs_theses/381

University of Manchester

26. Ullah, Israr. VIBRATION-BASED STRUCTURAL HEALTH MONITORING OF COMPOSITE STRUCTURES.

Degree: 2011, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:127166

► Composite materials are in use in several applications, for example, aircraft structural components, because of their light weight and high strength. However the delamination which… (more)

▼ Composite materials are in use in several applications, for example, aircraft structural components, because of their light weight and high strength. However the delamination which is one of the serious defects often develops and propagates due to vibration during the service of the structure. The presence of this defect warrants the design life of the structure and the safety. Hence the presence of such defect has to be detected in time to plan the remedial action well in advance. There are a number of methods in the literature for damage detection. They are either “baseline free/reference free method” or using the data from the healthy structure for damage detection. However very limited vibration-based methods are available in the literature for delamination detection in composite structures. Many of these methods are just simulated studies without experimental validation. Grossly 2 kinds of the approaches have been suggested in the literature, one related to low frequency methods and other high frequency methods. In low frequency approaches, the change in the modal parameters, curvatures, etc. is compared with the healthy structure as the reference, however in the high frequency approaches, excitation of structures at higher modes of the order of few kHz or more needed with distributed sensors to map the deflection for identification of delamination. Use of high frequency methods imposes the limitations on the use of the conventional electromagnetic shaker and vibration sensors, whereas the low frequency methods may not be feasible for practical purpose because it often requires data from the healthy state which may not be available for old structures. Hence the objective of this research is to develop a novel reference-free method which can just use the vibration responses at a few lower modes using a conventional shaker and vibration sensors (accelerometers/laser vibrometers). It is believed that the delaminated layers will interact nonlinearly when excited externally. Hence this mechanism has been utilised in the numerical simulations and the experiments on the healthy and delaminated composite plates. Two methods have been developed here – first method can quickly identify the presence of the delamination when excited at just few lower modes and other method identify the location once the presence of the delamination is confirmed. In the first approach an averaged normalised RMS has been suggested and experimentally validated for this purpose. Latter the vibration data have then been analysed further to identify the location of delamination and its size. Initially, the measured acceleration responses from the composite plates have been differentiated twice to amplify the nonlinear interaction clearly in case of delaminated plate and then kurtosis was calculated at each measured location to identify the delamination location. The method has further been simplified by just using the harmonics in the measured responses to identify the location. The thesis presents the process of the development of the novel… Advisors/Committee Members: Sinha, Jyoti.

Subjects/Keywords: Delamination; Structural Health Monitoring; Composite; Vibration; Plate

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APA (6^th Edition):

Ullah, I. (2011). VIBRATION-BASED STRUCTURAL HEALTH MONITORING OF COMPOSITE STRUCTURES. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:127166

Chicago Manual of Style (16^th Edition):

Ullah, Israr. “VIBRATION-BASED STRUCTURAL HEALTH MONITORING OF COMPOSITE STRUCTURES.” 2011. Doctoral Dissertation, University of Manchester. Accessed April 15, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:127166.

MLA Handbook (7^th Edition):

Ullah, Israr. “VIBRATION-BASED STRUCTURAL HEALTH MONITORING OF COMPOSITE STRUCTURES.” 2011. Web. 15 Apr 2021.

Vancouver:

Ullah I. VIBRATION-BASED STRUCTURAL HEALTH MONITORING OF COMPOSITE STRUCTURES. [Internet] [Doctoral dissertation]. University of Manchester; 2011. [cited 2021 Apr 15]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:127166.

Council of Science Editors:

Ullah I. VIBRATION-BASED STRUCTURAL HEALTH MONITORING OF COMPOSITE STRUCTURES. [Doctoral Dissertation]. University of Manchester; 2011. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:127166

Colorado State University

27. Plankis, Alivia. Structural health monitoring MEMS sensors using elasticity-based beam vibrations.

Degree: MS(M.S.), Civil and Environmental Engineering, 2012, Colorado State University

URL: http://hdl.handle.net/10217/67898

► The worsening problem of aging and deficient infrastructure in this nation and across the world has demonstrated the need for an improved system to monitor… (more)

▼ The worsening problem of aging and deficient infrastructure in this nation and across the world has demonstrated the need for an improved system to monitor and maintain these structures. The field of structural health monitoring has grown in recent years to address this issue. The goal of this field is to continually monitor the condition of a structure to detect and mitigate damage that may occur. Many structural health monitoring methods have been developed and most of these require sensor systems to collect the necessary information to assess the current strength and integrity of a structure. The motivation for this thesis is a proposed new microelectromechanical systems (MEMS) sensor with applications in civil infrastructure sensing. The work required was to determine accurate estimates of the resonant frequencies for a fixed-fixed silicon bridge within the device so that further testing and development could proceed. Additional knowledge and information were essential, though, before these requested calculations could be performed confidently. First, a thorough review of current structural health monitoring concepts and methods was performed to better understand the field in which this device would be applied and what incentive existed to develop a new sensor. Second, an in-depth investigation of vibrational beam mechanics theories was completed to ensure the accuracy of the frequency results for the new MEMS sensor. This study analyzed the influence of three assumptions employed in the Euler-Bernoulli, Rayleigh, and Timoshenko beam theories by comparing their results to a three-dimensional, elasticity-based approximation for vibrational frequencies and mode shapes. The results of this study showed that all three theories are insufficient when a fixed support is involved, so the elasticity-based approximation was utilized to calculate the frequencies for the bridge component in the MEMS device. These results have been passed on to the developers so that the testing process could move forward in the hopes that the device could advance the field of structural health monitoring in the future. Advisors/Committee Members: Heyliger, Paul (advisor), Atadero, Rebecca (committee member), Leisure, Robert (committee member).

Subjects/Keywords: beam vibration; structural health monitoring; MEMS

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APA (6^th Edition):

Plankis, A. (2012). Structural health monitoring MEMS sensors using elasticity-based beam vibrations. (Masters Thesis). Colorado State University. Retrieved from http://hdl.handle.net/10217/67898

Chicago Manual of Style (16^th Edition):

Plankis, Alivia. “Structural health monitoring MEMS sensors using elasticity-based beam vibrations.” 2012. Masters Thesis, Colorado State University. Accessed April 15, 2021. http://hdl.handle.net/10217/67898.

MLA Handbook (7^th Edition):

Plankis, Alivia. “Structural health monitoring MEMS sensors using elasticity-based beam vibrations.” 2012. Web. 15 Apr 2021.

Vancouver:

Plankis A. Structural health monitoring MEMS sensors using elasticity-based beam vibrations. [Internet] [Masters thesis]. Colorado State University; 2012. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/10217/67898.

Council of Science Editors:

Plankis A. Structural health monitoring MEMS sensors using elasticity-based beam vibrations. [Masters Thesis]. Colorado State University; 2012. Available from: http://hdl.handle.net/10217/67898

University of Adelaide

28. Soleimanpour, Reza. Damage detection of defects using linear and nonlinear guided waves.

Degree: 2016, University of Adelaide

URL: http://hdl.handle.net/2440/103736

► In the past few years, application of guided waves for damage detection has been a topic of significant interest for many studies. Conventional guided wave… (more)

▼ In the past few years, application of guided waves for damage detection has been a topic of significant interest for many studies. Conventional guided wave techniques have been widely used in industry and technology for material characterisation and quality assessment by making use of so called linear acoustic response of material. It generally results in modification of linear parameters of guided waves such as wave amplitude, wave velocity, wave mode, and wave reflection and transmission. However, conventional guided wave techniques rely on baseline data known as the major linear guided wave techniques culprit. Among all guided wave techniques, nonlinear guided wave has been known as a promising baseline free approach, which offers enhanced reliability and practicability for damage detection. However, understanding of nonlinear guided waves is of essential importance for detecting and localising defects in structures. The nonlinear approach to acoustic non-destructive testing (NDT) is concerned with nonlinear responses of the guided waves, which is inherently related to the frequency changes of the input signal. Nowadays, composite materials are widely used in structures due to their attractive properties such as higher stiffness to mass ratio and better corrosion resistance compared to metals. So far, most of studies on application of nonlinear guided waves have been dedicated to isotropic materials, such as aluminium and steel, whereas only a limited number of works have been carried out on application of nonlinear guided waves in anisotropic materials. Moreover, most of works in this area have focussed on classical nonlinearity raised from material nonlinearity whereas a limited number of researches have focused on non-classical nonlinearity raised from contact acoustic nonlinearity (CAN). This research deals with linear and non-classical nonlinear interaction of guided waves with defects in structures from both numerical and experimental prospective. The aim of this research is to investigate guided waves for damage detection and damage localisation by developing an advanced 3D explicit finite element model for predicting the interaction of guided waves with defects in isotropic and anisotropic material. The study first focuses on linear guided waves for damage detection and is expanded to nonlinear guided waves. Chapters 3 and 4 focus on linear guided waves whereas Chapters 5 and 6 focus on nonlinear guided waves. The numerical work has been carried by an advanced 3D explicit finite element code in ABAQUS v6.14. Verification of finite element models has been carried out by comprehensive experimental studies. The linear guided wave measurement has been carried out using high precision scanning laser Doppler vibrometer (Polytec PSV-400-3D-M) and nonlinear guided waves measurement has been captured using a computer controlled arbitrary waveform generator (NI PXI-5412) and a NI PXI-5105 digitizer. The data has been processed in time domain and frequency domain and time-frequency domain using Matlab. The results of… Advisors/Committee Members: Ng, Alex Ching-Tai (advisor), School of Civil, Environmental and Mining Engineering (school).

Subjects/Keywords: guided waves; damage detection; structural health monitoring

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APA (6^th Edition):

Soleimanpour, R. (2016). Damage detection of defects using linear and nonlinear guided waves. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/103736

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Soleimanpour, Reza. “Damage detection of defects using linear and nonlinear guided waves.” 2016. Thesis, University of Adelaide. Accessed April 15, 2021. http://hdl.handle.net/2440/103736.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Soleimanpour, Reza. “Damage detection of defects using linear and nonlinear guided waves.” 2016. Web. 15 Apr 2021.

Vancouver:

Soleimanpour R. Damage detection of defects using linear and nonlinear guided waves. [Internet] [Thesis]. University of Adelaide; 2016. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/2440/103736.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Soleimanpour R. Damage detection of defects using linear and nonlinear guided waves. [Thesis]. University of Adelaide; 2016. Available from: http://hdl.handle.net/2440/103736

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

29. Ribeiro, João Gonçalo Peixe. Pet sense: animal monitoring system with IoT .

Degree: 2018, Universidade de Aveiro

URL: http://hdl.handle.net/10773/27847

► The observation and treatment of animals in veterinary hospitals is still very dependent on manual procedures, including the collection of vital signs (temperature, heart rate,… (more)

Subjects/Keywords: IoT; Data Streaming; Animal Health Monitoring

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APA (6^th Edition):

Ribeiro, J. G. P. (2018). Pet sense: animal monitoring system with IoT . (Thesis). Universidade de Aveiro. Retrieved from http://hdl.handle.net/10773/27847

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ribeiro, João Gonçalo Peixe. “Pet sense: animal monitoring system with IoT .” 2018. Thesis, Universidade de Aveiro. Accessed April 15, 2021. http://hdl.handle.net/10773/27847.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ribeiro, João Gonçalo Peixe. “Pet sense: animal monitoring system with IoT .” 2018. Web. 15 Apr 2021.

Vancouver:

Ribeiro JGP. Pet sense: animal monitoring system with IoT . [Internet] [Thesis]. Universidade de Aveiro; 2018. [cited 2021 Apr 15]. Available from: http://hdl.handle.net/10773/27847.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ribeiro JGP. Pet sense: animal monitoring system with IoT . [Thesis]. Universidade de Aveiro; 2018. Available from: http://hdl.handle.net/10773/27847

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Manchester

30. James, Peter Andrew. Health monitoring of IGBTs in automotive power converter systems.

Degree: PhD, 2013, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/health-monitoring-of-igbts-in-automotive-power-converter-systems(224a6b3c-a1f0-4379-9ff7-eb5603f8deb9).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.576845

► The use of IGBT power modules in the automotive industry is becoming increasingly common as manufacturers develop more hybrid and all electric vehicles. In an… (more)

▼ The use of IGBT power modules in the automotive industry is becoming increasingly common as manufacturers develop more hybrid and all electric vehicles. In an industry such as this, the reliability of a component is critical and vehicle manufacturers have conducted much research into diagnostic and prognostic systems for internal combustion engines that run in real time on the vehicle to determine when components will fail. Power electronic components do not have similar prognostics available. The traditional use of power electronic modules has been in applications where their life or duty cycle is well defined, and accelerated life tests are carried out to determine a mean time to failure. This type of prognostics is not appropriate for the automotive industry because the operating cycle of the vehicle varies greatly, both in driving style, duty cycle and environment. A new type of prognostics is therefore required which will calculate the life remaining in the power module in real time as the device is being used.Because of the high robustness of IGBT power modules, testing for time to failure can be a very lengthy process. A novel procedure and test rig based on Peltier effect thermoelectric coolers was developed, which can automatically temperature cycle IGBT power modules in a very short time and determine their life expectancy, all within their operating specifications. This was tested using several power modules. The failure modes of IGBT power modules are also investigated with a view to developing a failure prediction algorithm. The causes of failure are analysed and a prognostics algorithm is proposed. This prognostics algorithm uses thermal cycle history as a means to predict the life consumed for the power module. The data obtained by the accelerated life tests is used to calculate the coefficients for the prognostic algorithm. A simulation of a vehicle drive cycle is used to show how the prognostics algorithm can be used, and a value indicating the extent to which the IGBT power module has aged is calculated. It is also proved that by intelligently controlling the heat flowing from the heat sink on which the power module is mounted, the life of the IGBT power module can be increased by approximately three times.Hardware and software were developed to implement the health monitoring algorithm. Measurement and control circuits were designed, built and tested together with software that processes the input data, records the thermal cycle history of the IGBT power modules and calculates a value of age for the IGBT power modules in real time. This was tested on several modules to prove the validity of the algorithm.The new algorithms and methodology developed could enable vehicle manufacturers to predict the failure of power modules in hybrid and all electric vehicles. This technology could also benefit other industries such as the renewables (eg wind turbines) and aerospace, where the industry is moving towards all electric aircraft.

Subjects/Keywords: 621.3815; Prognostics; Health Monitoring; IGBT; Life prediction

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APA (6^th Edition):

James, P. A. (2013). Health monitoring of IGBTs in automotive power converter systems. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/health-monitoring-of-igbts-in-automotive-power-converter-systems(224a6b3c-a1f0-4379-9ff7-eb5603f8deb9).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.576845

Chicago Manual of Style (16^th Edition):

James, Peter Andrew. “Health monitoring of IGBTs in automotive power converter systems.” 2013. Doctoral Dissertation, University of Manchester. Accessed April 15, 2021. https://www.research.manchester.ac.uk/portal/en/theses/health-monitoring-of-igbts-in-automotive-power-converter-systems(224a6b3c-a1f0-4379-9ff7-eb5603f8deb9).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.576845.

MLA Handbook (7^th Edition):

James, Peter Andrew. “Health monitoring of IGBTs in automotive power converter systems.” 2013. Web. 15 Apr 2021.

Vancouver:

James PA. Health monitoring of IGBTs in automotive power converter systems. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2021 Apr 15]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/health-monitoring-of-igbts-in-automotive-power-converter-systems(224a6b3c-a1f0-4379-9ff7-eb5603f8deb9).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.576845.

Council of Science Editors:

James PA. Health monitoring of IGBTs in automotive power converter systems. [Doctoral Dissertation]. University of Manchester; 2013. Available from: https://www.research.manchester.ac.uk/portal/en/theses/health-monitoring-of-igbts-in-automotive-power-converter-systems(224a6b3c-a1f0-4379-9ff7-eb5603f8deb9).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.576845

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