Wear Characteristics Of Overhead Wires With Protective Wires Suspended By Suspension Clamps

36. After the conductor is fretting, the fatigue life of its outer aluminum strands will be reduced. This is because the stress concentration and crack extension caused by wear accelerate fatigue damage.
Feature explanation: Explains the changes in the fatigue life of the outer aluminum strands and the reasons. Stress concentration and crack extension accelerate fatigue damage.
37. When the overhead conductor with protective wire is fretting, the internal stress distribution of the protective wire will change. This is because the wear causes the geometric shape and boundary conditions of the protective wire to change.
Feature explanation: Point out the changes in the internal stress distribution of the protective wire and the reasons. Wear changes the geometric shape and boundary conditions of the protective wire.
38. After fretting, the thermal conductivity of the contact area between the conductor and the protective wire will change. This is because the wear changes the microstructure and contact state of the contact surface.
Feature explanation: Explains the changes in the thermal conductivity and the reasons. Wear changes the microstructure and contact state of the contact surface.
39. fiber suspension clamp The elastic modulus of the suspended overhead wire with protective wire will change to a certain extent after fretting wear. This is because cable suspension clamp wear causes the material microstructure and internal defects of the wire to change.
Feature explanation: Point out the change and cause of the elastic modulus of the wire, aerial cable suspension clamps wear changes the material microstructure and internal defects of the wire.