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Ductile Failure

Last updated: August 7, 2020

What Does Ductile Failure Mean?

A ductile failure is a type of failure seen in malleable materials characterized by extensive plastic deformation or necking. This usually occurs prior to the actual failure of the material. The term ductile rupture refers to the failure of highly ductile materials. In such cases, materials pull apart instead of cracking.

In ductile fracture and ductile failure, there is absorption of massive amounts of energy and slow propagation before the fracture occurs.

Ductile failure is also known as ductile fracture.


Corrosionpedia Explains Ductile Failure

Ductile failure is one of the most crucial concepts in material engineering. In general, a ductile failure is defined as a body going through separation due to imposed stresses. Almost all engineering materials undergo only two types of failure/fracture modes: ductile and brittle fracture.

Ductile materials exhibit massive amounts of plastic buckling or deformation in comparison to brittle materials. In ductile failure, the crack grows at a slow pace and is accompanied with a great deal of plastic deformation. In this case, the crack does not expand except when high levels of stress are present.

In almost all material design situations, materials that exhibit ductile failures or fractures are preferred for various reasons, such as:

  • Ductile materials deform plastically, slowing the fracture process and allowing more time to correct problems.
  • Higher amounts of energy strain are required to deform a ductile material.
  • Ductile materials are forgiving, and any error in the design process does not result in catastrophic failure.

By understanding ductile failure, engineers are able to develop more dependable and safer industrial products and materials.



Ductile Fracture

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