TY - GEN
T1 - Effect of SiR Aging on the Ultrasonic Properties of the SiR/XLPE Interface
AU - Cao, Junping
AU - Zhang, Zelin
AU - Zhong, Wenxin
AU - Ge, Zhou
AU - Xia, Rong
AU - Wu, Kangning
AU - Li, Jianying
N1 - Publisher Copyright:
© Beijing Paike Culture Commu. Co., Ltd. 2026.
PY - 2026
Y1 - 2026
N2 - This study established a multiscale framework linking SiR (silicone rubber) thermo-oxidative aging to interfacial ultrasonic signatures in cable joints. By setting the aging test at different stages of 0–70 days at 125 °C, the results showed that, the density of SiR elevated by 34.7% and the elastic modulus enhanced by 39.8% driven by cross-linking reactions, while the SiR/XLPE interfacial pressure declined by 18.6% due to stress relaxation. Implementation of these parameters into a sequentially coupled stress-acoustic COMSOL model simulated wave propagation dynamics, revealing that the reflection coefficient of the primary echo increased monotonically with the extension of aging time, which is attributed to the decrease of the interface contact area. And the nonlinear coefficient β exhibited piecewise variation—initially decaying rapidly (harmonic attenuation predominated) and then stabilizing at small interfacial pressures. These findings establish ultrasonic nonlinearity as a sensitive indicator of interfacial pressure deterioration, enabling non-destructive assessment of interfacial integrity in 35 kV–110 kV cable joints.
AB - This study established a multiscale framework linking SiR (silicone rubber) thermo-oxidative aging to interfacial ultrasonic signatures in cable joints. By setting the aging test at different stages of 0–70 days at 125 °C, the results showed that, the density of SiR elevated by 34.7% and the elastic modulus enhanced by 39.8% driven by cross-linking reactions, while the SiR/XLPE interfacial pressure declined by 18.6% due to stress relaxation. Implementation of these parameters into a sequentially coupled stress-acoustic COMSOL model simulated wave propagation dynamics, revealing that the reflection coefficient of the primary echo increased monotonically with the extension of aging time, which is attributed to the decrease of the interface contact area. And the nonlinear coefficient β exhibited piecewise variation—initially decaying rapidly (harmonic attenuation predominated) and then stabilizing at small interfacial pressures. These findings establish ultrasonic nonlinearity as a sensitive indicator of interfacial pressure deterioration, enabling non-destructive assessment of interfacial integrity in 35 kV–110 kV cable joints.
KW - 979–8–3503-7498-8/24/$31.00 ©2024 IEEE
KW - Cable Joint Diagnostics
KW - Contact Acoustic Nonlinearity
KW - Interfacial Pressure
KW - Science and Technology Project of State Grid Corporation (No 5500-202319533A-3-2-ZN).
KW - Silicone Rubber Aging
UR - https://www.scopus.com/pages/publications/105038517846
U2 - 10.1007/978-981-95-7330-1_13
DO - 10.1007/978-981-95-7330-1_13
M3 - 会议稿件
AN - SCOPUS:105038517846
SN - 9789819573295
T3 - Lecture Notes in Electrical Engineering
SP - 122
EP - 129
BT - The Proceedings of the 20th Annual Conference of China Electrotechnical Society - Volume 6th
A2 - Yang, Qingxin
A2 - Xu, Dianguo
A2 - Ye, Xuerong
A2 - Nie, Qiuyue
A2 - Guan, Yueshi
PB - Springer Science and Business Media Deutschland GmbH
T2 - 20th Annual Conference of China Electrotechnical Society, ACCES 2025
Y2 - 19 September 2025 through 21 September 2025
ER -