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New Sensing Techniques for Structural Health Monitoring of Hydraulic Hose, Composite Panels, and Biodegradable Metal Implants

Sundaramurthy, Surya Narayanan

Abstract Details

2011, MS, University of Cincinnati, Engineering and Applied Science: Mechanical Engineering.
The development of new sensing techniques for in-situ continuous monitoring systems is one of the most interesting research topics in the area of Structural Health Monitoring (SHM). The primary difficulties related to putting health monitoring systems in applications are implementation costs, reliability of the sensor system, and having the expertise required to use these techniques. Hence there is a need to develop innovative, low cost sensor systems that are simple, rugged, reliable and user friendly. This thesis makes a contribution in that direction by developing low cost sensor systems for health monitoring of various mechanical components. The novel sensing techniques evaluated as a part of this thesis include; • A new sensor concept based on electrical impedance technology called a ‘sensor skin’ for surface SHM that detects small initiating damage over large areas, • A clip-on sensor module designed using a commercially available low cost piezo film sensor for local damage detection and strain monitoring of the structure, • A continuous sensor developed using advanced, high performance, lightweight carbon nanotube sensor thread, and an impedance based carbon nanotube sensor thread for crack and strain sensing, and surface damage detection, • An eddy current based sensing technique for monitoring corrosion behavior, and a feedback control device using the cathodic protection principle for prevention of corrosion in structural/biomedical systems. In the thesis, three different application scenarios were considered; health monitoring of hydraulic hose used in machinery, damage detection in composite panels used in aerospace applications, and monitoring the corrosion of biodegradable metal implants. The new sensing techniques were evaluated for these applications. One of the significant advantages of using the new sensing approaches is the large reduction in the number of channels of data acquisition and reduction in computational needs for health monitoring. Composite materials in particular can benefit from these new sensing techniques using carbon nanotubes and the sensor skin. Also, the use of carbon nanotube sensor thread opens the possibility of continuously monitoring large structures like aircraft, ships, and other large vehicles with a small number of data acquisition channels. The research in this thesis was performed in the Nanoworld Laboratory at University of Cincinnati.
Mark Schulz, PhD (Committee Chair)
Jay Lee, PhD (Committee Member)
Vesselin Shanov, PhD (Committee Member)
David Thompson, PhD (Committee Member)
205 p.

Recommended Citations

Citations

  • Sundaramurthy, S. N. (2011). New Sensing Techniques for Structural Health Monitoring of Hydraulic Hose, Composite Panels, and Biodegradable Metal Implants [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1307105130

    APA Style (7th edition)

  • Sundaramurthy, Surya Narayanan. New Sensing Techniques for Structural Health Monitoring of Hydraulic Hose, Composite Panels, and Biodegradable Metal Implants. 2011. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1307105130.

    MLA Style (8th edition)

  • Sundaramurthy, Surya Narayanan. "New Sensing Techniques for Structural Health Monitoring of Hydraulic Hose, Composite Panels, and Biodegradable Metal Implants." Master's thesis, University of Cincinnati, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1307105130

    Chicago Manual of Style (17th edition)