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The Influence of Thickness on the Complex Modulus of Air Plasma Sprayed Ceramic Blend Coatings

Hansel, Jason Edgar
http://rave.ohiolink.edu/etdc/view?acc_num=wright1228478738

Abstract Details

2008, Master of Science in Engineering (MSEgr), Wright State University, Mechanical Engineering.
Previous research suggests that damping of metallic beams that have a hard ceramic coating applied on them is proportional to the coating thickness. This indicates that the damping is a volume dependent material property. Since thickness variations are likely in an actual application, it is essential to understand the role that coating thickness plays in damping effectiveness. For this research, a series of tests were conducted using substrate beams of 90 mil Ti-6Al-4V, coated with 3 mils of an air plasma sprayed NiCrAlY bond coat followed by a Titania-Alumina ceramic blend coating applied via air plasma spray in one of three thicknesses (5 mil, 10 mil and 15 mil). Four specimens were coated at each thickness for a total of 12 specimens. The system loss factor and natural frequencies were measured for each specimen at each stage to determine the material properties of the bare beam, the bond coat and the ceramic coating. This information was used with the dimensions at each stage to determine the material properties (storage modulus, loss modulus and loss factor) for the bond coat and the ceramic. Differences in the results of different thickness specimens allow the ability to determine and quantify a thickness effect.
Joseph Slater, Ph.D., P.E. (Committee Chair)
Peter Torvik, Ph.D. (Committee Member)
Nathan Klingbeil, Ph.D. (Committee Member)
119 p.
Engineering; Mechanical Engineering
Vibration Damping; Ceramic coatings; Titania-Alumina; Mechanical Properties; complex modulus

Recommended Citations

Citations

  • Hansel, J. E. (2008). The Influence of Thickness on the Complex Modulus of Air Plasma Sprayed Ceramic Blend Coatings [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1228478738

    APA Style (7th edition)

  • Hansel, Jason. The Influence of Thickness on the Complex Modulus of Air Plasma Sprayed Ceramic Blend Coatings. 2008. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1228478738.

    MLA Style (8th edition)

  • Hansel, Jason. "The Influence of Thickness on the Complex Modulus of Air Plasma Sprayed Ceramic Blend Coatings." Master's thesis, Wright State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1228478738

    Chicago Manual of Style (17th edition)

wright1228478738
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© 2008, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.