Question

Constant stress test is used for a biomaterial to measure

• A. ( \text{Ductility} ) \
• B. ( \text{Toughness} ) \
• C. ( \text{Creep} ) \
• D. ( \text{Fatigue} ) \

Hint:

When considering mechanical properties of biomaterials, remember that 'creep' is related to deformation under constant stress over time, while 'fatigue' is related to failure under cyclic or fluctuating stress. These are crucial for predicting the long-term performance and failure of implants in the human body.

Answer 1

The Correct Option is C

A constant stress test, often performed at elevated temperatures, is specifically designed to measure the creep behavior of a material.
Creep is the tendency of a solid material to move slowly or deform permanently under the influence of persistent mechanical stresses.
Biomaterials, especially those used in implants, are subject to constant stresses in the body, making creep a critical property to measure for long-term performance and safety.
Ductility refers to a material's ability to deform under tensile stress without fracturing.
Toughness is the ability of a material to absorb energy and plastically deform without fracturing.
Fatigue is the weakening of a material caused by cyclic loading that results in progressive and localized structural damage.