Ceramic Elastic Deformation

When an exterior stress is applied to a solid body the body tends to pull itself apart.

Ceramic elastic deformation.

Pores can reduce the load carrying cross section area cause local stress concentrations and lower elastic moduli. Grain and grain boundary processes contribute to plastic strain. This change in shape is called deformation. This causes a force trying to resist the deformation.

Thermodynamically stable cavities can absorb vacancies 37. Plastic deformation of ceramic materials. Author links open overlay panel philip c dokko joseph a pask. When a sufficient load is applied to a metal or other structural material it will cause the material to change shape.

A temporary shape change that is self reversing after the force is removed so that the object returns to its original shape is called elastic deformation. The fracture stress is usually the same or very close to the elastic limit. This force is known as strain. There axe very few ceramic materials free of pores that are also free of a glassy phase which 81 was present as a liquid during firing.

Understanding elastic deformation is very important in ceramics to eliminate instantaneous brittle fracture at some applied stress levels. The complexity of the characters of ceramic materials enhances difficulties of evaluating the effect of various parameters on the plastic behavior of the materials. Deformation can be elastic or plastic. Deformation can be elastic or plastic.