Goodman Diagram Via Vibration-Based Fatigue Testing

[+] Author and Article Information
Tommy J. George, Charles J. Cross, Jeffrey Calcaterra

Air Force Research Laboratory, Wright-Patterson AFB, OH 45433

M.-H. Herman Shen, Onome Scott-Emuakpor

Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210

Theodore Nicholas

Air Force Institute of Technology, Wright-Patterson AFB, OH 45433

J. Eng. Mater. Technol 127(1), 58-64 (Feb 22, 2005) (7 pages) doi:10.1115/1.1836791 History: Received January 01, 2003; Revised September 14, 2004; Online February 22, 2005
Copyright © 2005 by ASME
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Typical Goodman (or Haigh) diagram 3. The straight line represents a modified Goodman diagram. The modified Jasper equation is also shown.
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FEM results for square, steel plate geometry
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Maximum load y-direction total strain
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Residual y-direction total strain
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Residual y-direction stress
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Residual y-direction elastic strain
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Residual y-direction plastic strain
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Diagram of strain gage placement
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Load–strain history for 6061-T6 specimen #2
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Total, elastic, plastic strains, and residual stress
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Goodman diagram for 6061-T6 for 106 cycles from vibration-based (bending) test data. (Note: the Goodman line endpoint is the UTS from an axial tensile test.)




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