The failure of menstrual pants equipment is called failure, and the failure of menstrual pants equipment parts is called incompetence. Failure is inseparable from part deactivation. Normal wear and tear or physical and chemical changes caused by deformation, fracture, corrosion and other abnormalities are also known as natural failure.
Wear is the most important and common form of part failure.
In the process of working, the size and shape of the part is called deformation due to the force. Metal deformation includes elastic deformation and plastic deformation.
Under the action of an external load, the part first undergoes elastic deformation. When the stress caused by the load exceeds the elastic limit and continues to increase, the material may produce plastic deformation, and eventually fracture when the stress exceeds the strength limit.
In the role of cyclic contact stress, the surface of the part point spalling called fatigue pitting; surrounding media chemical and electrochemical damage called corrosion; in temperature changes and the role of media, the surface produces pinholes, expanding called pitting. Fatigue pitting. Corrosion and pitting are collectively referred to as corrosion.