How to tell ductile vs brittle fracture using fractography

Описание к видео How to tell ductile vs brittle fracture using fractography

Ductile vs brittle fracture will both involve crack initiation and crack propagation. However, these failure modes look very different. A ductile material can deform in the presence of a crack to reduce stress and in doing so can prevent spontaneous crack growth. A brittle material cannot deform (much) so crack propagation is spontaneous. The fracture surface can be investigated to tell which mode occurred. This is called fractography. Ductile fracture surfaces tend to be rough and cup and cone shaped. Brittle fracture surfaces tend to be flat with characteristic flaw, mirror, mist, and hackle regions pointing to the flaw responsible for failure.

Комментарии

Информация по комментариям в разработке

Похожие видео