Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


Thesis.pdf (1.04 MB)

ETD Abstract Container

Abstract Header

Identification of Nonlinear Constitutive Properties of Damping Coatings

Tidball, Mackenzie E.
http://rave.ohiolink.edu/etdc/view?acc_num=wright1544891984582991

Abstract Details

2018, Master of Science in Mechanical Engineering (MSME), Wright State University, Mechanical Engineering.
Scheduled and unscheduled maintenance actions are a significant cost for gas turbines. Advanced life prediction capabilities help to mitigate these costs. However, the protective thermal and damping coatings applied to the turbine rotors which can help significantly extend component life simultaneously increase the difficulty of modeling the behavior of the components due to the nonlinearity they introduce. This research approaches modeling and analysis of nonlinear coatings for turbine blades and blisks using a nonlinear constitutive law model for the coating. The theoretical frequency response of the nonlinear system is solved for using the harmonic balance method. The coefficients of the nonlinear constitutive law are then identified by coupling the theoretical nonlinear system response with experimental data in a minimization function. This approach more accurately identifies the nonlinear coefficients of the system by fitting the model to the full frequency response of the system at resonance as opposed to using just a few points such as with half-power peak picking. The identified nonlinear coating model can later be used in finite element analysis to both optimize the coating within the operating conditions of the turbine and improve life prediction capabilities of the system.
Joseph Slater, Ph.D., P.E. (Advisor)
Jeffrey Brown, Ph.D. (Committee Member)
Harok Bae, Ph.D. (Committee Member)
89 p.
Mechanical Engineering
nonlinear identification; thermal barrier coatings

Recommended Citations

Citations

  • Tidball, M. E. (2018). Identification of Nonlinear Constitutive Properties of Damping Coatings [Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1544891984582991

    APA Style (7th edition)

  • Tidball, Mackenzie. Identification of Nonlinear Constitutive Properties of Damping Coatings. 2018. Wright State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1544891984582991.

    MLA Style (8th edition)

  • Tidball, Mackenzie. "Identification of Nonlinear Constitutive Properties of Damping Coatings." Master's thesis, Wright State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1544891984582991

    Chicago Manual of Style (17th edition)

wright1544891984582991
311
© 2018, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.