plastic bottles, fishing net, netting @ Pixabay

In order to answer that question, let’s first define what brittle and plastic deformation are. Brittle deformation is a type of fracture in which the material breaks with an irregular surface and no cracks or fissures on its surface. Plastic deformation is when the material bends without breaking, which can be seen as a “give” at the point where it was bent. When a material is brittle and the force on it increases, there will be no give in the deformation. Over time this pressure can cause microscopic fractures to form at grain boundaries of crystalline materials like metals or minerals. This causes them to fracture without warning–often with catastrophic results. In contrast, plastic deformations are more gradual because they allow some resistance against sudden changes in direction as well as stress concentration (points where stresses concentrate). The very nature of being “plastic” allows for a bit more give before fracturing than when experiencing brittle damage.” Brittle Deformation: Brittle deformation would be favored over plastic deformation whenever quick breaks from high loads are needed such as when cutting through something tough but easily cuttable

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