The fatigue data for a ductile cast iron are given as follows: (a) Make an S?N plot
Question:
The fatigue data for a ductile cast iron are given as follows:
(a) Make an S?N plot (stress amplitude versus logarithm cycles to failure) using these data.
(b) What is the fatigue limit for this alloy?
(c) Determine fatigue lifetimes at stress amplitudes of 230MPa (33,500psi) and 175MPa (25,000psi).
(d) Estimate fatigue strengths at 2 ? 105 and 6 ? 106 cycles.
Transcribed Image Text:
Stress Amplitude [MPa ksi)] Cycles to Failure 248 (36.0) 1 x 105 236 (34.2) 3 x 105 224 (32.5) 1x 106 213 (30.9) 3 x 100 201 (29.1) 1x 107 193 (28.0) 3 x 107 1x 108 193 (28.0) 193 (28.0) 3 x 10
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a The fatigue data for this alloy are plotted below b The fatigue limit is the stress ...View the full answer
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Related Book For
Fundamentals of Materials Science and Engineering An Integrated Approach
ISBN: 978-1118061602
4th Edition
Authors: David G. Rethwisch
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