A material selection method based on material properties and operating parameters

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National Aeronautics and Space Administration, 1973 - Technology & Engineering - 12 pages
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The influence of strength, fracture toughness, and crack growth resistance on the design stress level has been determined from a mathematical model of crack growth and failure. The results show that to select materials properly, the operating parameters of desired life and initial flaw size must be considered simultaneously with the material properties. To do this, a method for constructing an operating surface is derived, discussed, and illustrated.

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