A. Very serious in brittle materials and less serious in ductile materials B. Very serious in ductile materials and less serious in brittle materials C. Equally serious in both types of materials D. Seriousness would depend on other factors
A. Metal strength by cycling B. Metal hardness by surface treatment C. Metal resistance to corrosion by coating D. Fatigue limit by overstressing the metal by successively increasing loadings
A. Increases the seriousness of static load-ing stress concentration B. Lessens the seriousness of static load¬ing stress concentration C. Has no effect on it D. Depends on other considerations
