An Experimental Study on Fatigue Life Variance, Residual Stress Variance, and Their Correlation of Face-Turned and Ground Ti 6Al-4V Samples

[+] Author and Article Information
Xiaoping Yang

Cummins Inc., Mail Code 91617, 635 South Mapleton, Columbus, IN 47201

C. Richard Liu

School of Industrial Engineering

A. F. Grandt

School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN 47907

J. Manuf. Sci. Eng 124(4), 809-819 (Oct 23, 2002) (11 pages) doi:10.1115/1.1511174 History: Received June 01, 2000; Online October 23, 2002
Copyright © 2002 by ASME
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The significant variation of fatigue life, the lack of information thereof, and relating average life to maximum stress (from 3)
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Sample dimension, beam area, and location for measurement
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In-depth residual stress profile for faced samples
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In-depth residual stress profile for ground samples
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Coefficient of variation for measured quantities (surface finish, microhardness, surface residual stress)
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A sample mounted on the face plate using a special fixture
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Second set sample dimensions for fatigue test
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A failed sample in bending fatigue test
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Different safety ratio corresponding to different component reliability for faced and ground samples




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