A structural design for which the governing design criterion is limiting the maximum working stress is sometimes referred to as a “strengthcritical design” and a structural design in which the governing design criterion is limiting the maximum working deformation is sometimes referred to as a “stiffness-critical design

A structural design for which the governing design criterion is limiting the maximum working stress is sometimes referred to as a “strengthcritical design” and a structural design in which the governing design criterion is limiting the maximum working deformation is sometimes referred to as a “stiffness-critical design.” (a) Considering only the mechanical properties of carbon fiber-reinforced composites, which types of carbon fibers would be the most desirable for use in strengthcritical composite designs and (b) which types of carbon fibers would be the most desirable for use in stiffness-critical composite designs? (c) If minimization of structural weight is an additional consideration, would this change the answers to (a) and (b)?