Non-destructive interface pressure detection
Utilizes nonlinear ultrasonic coefficient to evaluate interfacial pressure between cable silicone rubber and cross-linked polyethylene; both theory and experiment show the coefficient increases with pressure, enabling non-destructive testing of cable accessory interfaces.
Fang, Chunhua · Aoqi, Sun · You, Haixin · Xia, Rong · Wang, Yuli · Tao, Hu
Gaodianya Jishu/High Voltage Engineering 2024
Nonlinear coefficient increases with interface pressure
Interface primary echo amplitude decreases
Echo time decreases