Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


osu1275400649.pdf (2.01 MB)

ETD Abstract Container

Abstract Header

An Energy-Based Experimental-Analytical Torsional Fatigue Life-Prediction Method

Wertz, John Nicholas
http://rave.ohiolink.edu/etdc/view?acc_num=osu1275400649

Abstract Details

2010, Master of Science, Ohio State University, Aero/Astro Engineering.
An energy-based cycle-dependent fatigue life prediction framework for the calculation of torsional fatigue life and remaining life has been developed. The framework for this fatigue prediction method is developed in accordance with previously developed energy-based axial and bending fatigue life prediction approaches, which state: the total strain energy density accumulated during both a monotonic fracture event and cyclic processes is the same material property, where each can be determined by measuring the area beneath the monotonic true stress-strain curve and the area within a hysteresis loop, respectively. The energy-based fatigue life prediction framework is composed of the following entities: (1) the development of a shear fatigue testing procedure capable of assessing cyclic plastic strain energy density accumulation in a pure shear stress state and (2) the incorporation of an energy-based fatigue life calculation scheme to determine the remaining fatigue life of in-service gas turbine materials subjected to pure shear fatigue. Validation of the improved theory was attempted but failed due to undesired axial loading occurring during testing. Future work was proposed to address the issues.
Herman Shen, PhD (Advisor)
Jack McNamara, PhD (Committee Member)
Tommy George, PhD (Other)
Onome Scott-Emuakpor, PhD (Other)
80 p.
Aerospace Materials; Engineering; Experiments; Mechanical Engineering; Mechanics
energy-based torsional fatigue life-prediction shear method

Recommended Citations

Citations

  • Wertz, J. N. (2010). An Energy-Based Experimental-Analytical Torsional Fatigue Life-Prediction Method [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1275400649

    APA Style (7th edition)

  • Wertz, John. An Energy-Based Experimental-Analytical Torsional Fatigue Life-Prediction Method. 2010. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1275400649.

    MLA Style (8th edition)

  • Wertz, John. "An Energy-Based Experimental-Analytical Torsional Fatigue Life-Prediction Method." Master's thesis, Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1275400649

    Chicago Manual of Style (17th edition)

osu1275400649
1,800
© 2010, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.