Q: Is fracture the separation of an object or material into two or more pieces under the action of stress? ¶
Q: Is fracture : void formation? ¶
A: Yes, and void coalescence , crack propagation, and failure, often resulting in a cup-and-cone shaped failure surface.
Q: Is fracture often applied to bones of living creatures? ¶
A: Yes, or to crystalline materials, such as gemstones or metal.