Stress concentration
Stress Concentration
Stress Concentration (pronunciation: /strɛs kɒnsənˈtreɪʃən/) is a phenomenon in the field of Materials Science and Mechanical Engineering where stress is raised significantly in the material due to abrupt changes in its shape or the presence of imperfections.
Etymology
The term "Stress Concentration" is derived from the English words "stress", which in this context refers to the internal forces that neighboring particles of a material exert on each other, and "concentration", referring to a high amount of something in a particular area.
Definition
Stress Concentration is defined as the increase in local stress at specific points or areas within the material that are subjected to changes in its geometry or have imperfections. These areas are often referred to as Stress Concentration Factors (SCF).
Related Terms
- Stress Concentration Factor (SCF): A dimensionless factor used in calculations to predict the highest stress in the vicinity of a material discontinuity.
- Notch Sensitivity: A measure of the sensitivity of a material to the presence of notches or abrupt changes in its geometry.
- Fracture Mechanics: The field of mechanics concerned with the study of the propagation of cracks in materials.
- Fatigue (Material): The weakening of a material caused by repeatedly applied loads.
See Also
External links
- Medical encyclopedia article on Stress concentration
- Wikipedia's article - Stress concentration
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