Which of the following is a common characteristic of brittle materials like ceramics?

Which of the following is a common characteristic of brittle materials like ceramics?

• A. They deform easily under stress
• B. They can withstand high temperatures without breaking
• C. They fail without significant plastic deformation
• D. They are typically light in weight

Answer: (C)

Brittle materials, such as ceramics, are characterized by their failure behavior under stress. When subjected to force, these materials do not exhibit significant plastic deformation; instead, they tend to fracture suddenly once the applied stress exceeds their strength limit. This lack of plastic deformation means that brittle materials can resist deformation and maintain their shape until they reach a critical point, at which they break without warning. This property is a key factor in applications where sudden failure can be critical and must be considered in design and material selection processes. The other options touch on characteristics that can be misattributed to brittle materials. For instance, the ability to deform easily under stress is more characteristic of ductile materials, which absorb energy and deform before breaking. The statement about high-temperature resistance is also not exclusive to brittle materials, as some ductile materials can also withstand high temperatures. Lastly, weight considerations vary widely among materials and do not distinctly classify a material as brittle or not; brittleness is more about the failure mode rather than physical weight characteristics.

Brittle materials, such as ceramics, are characterized by their failure behavior under stress. When subjected to force, these materials do not exhibit significant plastic deformation; instead, they tend to fracture suddenly once the applied stress exceeds their strength limit. This lack of plastic deformation means that brittle materials can resist deformation and maintain their shape until they reach a critical point, at which they break without warning. This property is a key factor in applications where sudden failure can be critical and must be considered in design and material selection processes.

The other options touch on characteristics that can be misattributed to brittle materials. For instance, the ability to deform easily under stress is more characteristic of ductile materials, which absorb energy and deform before breaking. The statement about high-temperature resistance is also not exclusive to brittle materials, as some ductile materials can also withstand high temperatures. Lastly, weight considerations vary widely among materials and do not distinctly classify a material as brittle or not; brittleness is more about the failure mode rather than physical weight characteristics.