Figure 1 In an earlier entry, we saw that bending is one of the basic loading geometries. In Figure 1, we create three-point bending in a simple beam by pushing

In tensile loading, crack-opening stresses create cracks that are perpendicular to the loading direction.

What is required to understand how to tell the difference between a macro-scale ductile and a macro-scale brittle crack is a basic understanding of whether shear (sliding) or normal (crack

In earlier columns, we looked at some photos of broken parts to gain an appreciation for the fact that ductile and brittle fractures may be more complicated than the commonly

Understanding how a component fails is an important step in understanding why a component fails. In order to understand how a component cracks, it is important to understand what loading geometry or geometries could have been responsible for the fracture.

Many engineers think it is pretty easy to distinguish a ductile from a brittle crack. However, many people have incomplete understandings of these concepts.