Characterization and Modeling of Two Dimensional Crack Growth in Gas Turbine Materials
23 Feb 2021 | Contributor(s):: Satin, Morris Mandel
Advisors: William S. Johnson, Richard W. Neu, Arun Gokahle, Olivier Pierron, Christopher MuhlsteinSurface flaws are common in gas turbine components and undergo a complex process of fatigue crack growth under mechanical and thermal loading. This project seeks to bring greater clarity and...
Characterization and Modeling of the Thermomechanical Fatigue Crack Growth Behavior of Inconel 718 Superalloy
17 Aug 2017 | Contributor(s):: Radzicki, Andrew Thomas
Advisors: William S. Johnson, Richard W. Neu, David L. McDowell, Olivier Pierron, Christopher MuhlsteinUnderstanding the impact of the complex and harsh thermomechanical environment aircraft turbine engines subject their components to is critical for designers and operators to ensure the safe and...
Thermomechanical Behavior of a Directionally Solidified Nickel-Base Superalloys in the Aged State
08 Jun 2015 | Contributor(s):: Kirka, Michael
Advisors: Richard W. Neu, Rosario Gerhardt, Surya Kalidindi, David L. McDowell, Stephen D. Antolovich, Thomas H. SandersUnderstanding the effects of aged microstructures on the thermomechanical fatigue (TMF) properties of nickel-base (Ni-base) superalloys remains unclear. Few experimental results...
Thermomechanical Fatigue of Mar-M247: Extension of a Unified Constitutive and Life Model to Higher Temperatures
22 May 2014 | Contributor(s):: Brindley, Kyle A.
Advisors: Richard W. Neu, David L. McDowell, Olivier N. PierronThe goal of this work is to establish a life prediction methodology for thermomechanical loading of the Ni-base superalloy Mar-M247 over a larger temperature range than previous work. The work presented in this thesis extends the...
Thermomechanical Fatigue Crack Formation in Nickel-Base Superalloys at Notches
20 May 2012 | Contributor(s):: Fernandez-Zelaia, Patxi
Advisors: Richard W. Neu, David L. McDowell, Stephen D. AntolovichHot sections of gas engine turbines require specialized materials to withstand extreme conditions present during engine operation. Nickel-base superalloys are typically used as blades and disks in the high pressure turbine section...