Machine Design
Which of the following statement is correct?
- A. The stress concentration in static loading is more serious in ductile materials and less serious in brittle materials
- B. The stress concentration in static loading is more serious in brittle materials and less serious in ductile materials
- C. The toughness of a material increases when it is heated
- D. The shear stress in a beam varies from zero at the neutral surface and maximum at the outer fibres