Spall

Spall

Spall is a term used in the field of materials science and engineering to describe the process of surface failure or fragmentation that occurs when a material is subjected to high levels of stress, impact, or thermal shock. It is characterized by the detachment or ejection of small pieces or flakes from the surface of the material, often resulting in a rough, pitted, or chipped appearance. Spalling can occur in various materials, including concrete, brick, stone, ceramics, and certain metals, and is often a sign of underlying structural or material weaknesses. In the context of design, spalling is an important consideration when selecting materials for construction or manufacturing, as it can affect the durability, aesthetics, and safety of the final product. Designers must carefully consider the potential for spalling when specifying materials for use in environments where they may be exposed to extreme temperatures, moisture, or physical stresses. Preventive measures, such as proper material selection, reinforcement, and surface treatments, can be employed to minimize the risk of spalling and ensure the longevity and integrity of the designed object or structure.

materials science, surface failure, fragmentation, durability, structural integrity

— John Armstrong