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The fatigue data for a ductile cast iron are given

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?

(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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Fundamentals of Materials Science and Engineering An Integrated Approach

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Authors: David G. Rethwisch

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Question Posted: Jul 02, 2011 10:42 AM

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