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Fatigue is the initiation and propagation of cracks in a material due to cyclic loading. Learn about the history, causes, effects and tests of metal fatigue, and the stages of crack initiation, growth and failure.
Metal fatigue is the weakening of metal parts by repeated stresses or loadings, leading to fracture under lower stress than normal. Learn about the history, testing methods, and prevention of metal fatigue from Britannica, the online encyclopedia.
- The Editors of Encyclopaedia Britannica
Metal fatigue is a type of failure unique to metals and alloys under specific conditions. It occurs as a result of repeated, fluctuating stresses that are often lower than the strength the material would typically withstand. Learn how to identify and prevent fatigue failure with BorTec's advanced treatments.
- What is fatigue? Fatigue refers to the decline in the structural performance of materials, particularly metals, when subjected to cyclic stress or strain, ultimately leading to failure.
- Types of fatigue 1. Impact fatigue. It refers to fatigue caused by repeated impact loads. When the number of impacts, N, is less than 500 to 1000, the parts can become damaged and the fracture form of the parts will be similar to that of a single impact.
- Fatigue life. When a material or mechanical component fails, the total life usually consists of three parts: 1. Crack initiation life. A significant number of engineering studies have demonstrated that the crack initiation life of mechanical components accounts for a large portion, even up to 90%, of the total fatigue life during actual service.
- Fatigue form of metal materials. Fatigue of metal materials mainly includes the following: General Plastic Deformation; Low-Cycle Fatigue Plastic Deformation;
Demonstrates how to solve a wide range of specialized metal fatigue problems relating to small defects and non-metallic inclusions. Provides a detailed introduction to fatigue mechanisms and stress concentration.
Learn about fatigue and fracture, the progressive failure of materials under cyclic loading, such as repeated bending of a metal strip. Find out the causes, types, and prevention of fatigue and fracture in engineering.
A book by Les Pook that covers the basic concepts and applications of metal fatigue, a type of material failure caused by repeated loading and unloading. The book covers historical background, fatigue design, fatigue crack paths, and the importance of fatigue for engineering and safety.
