Результаты (
английский) 2:
[копия]Скопировано!
1. Elastic deformation - a reaction of all materials to external forces such as tension, compression, torsion, bending and shear.
2. Fatigue and creep of materials are the result of external forces.
3. External forces cause permanent deformation and destruction of the material.
4. The tensile and compressive forces are working at the same time, when we flex or twist the material.
5. Stretching of the material above the limit of its elasticity gives permanent deformation or destruction.
6. When the item is working for a long time under cyclic stress, it appears the small cracks grow due to metal fatigue.
7. Creep - a slow change in the size of parts under voltage.
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