A Material Selection Method Based on Material Properties and Operating Parameters

摘要

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 simulta-neously with the material properties. To do this, a method for constructing an operating surface is derived, discussed, and illustrated. (Author)