Mateo Carlos, Talavera Juan A, Muñoz Antonio
Instituto de Investigación Tecnológica of the Universidad Pontificia Comillas, Madrid, Spain.
IEEE Trans Ultrason Ferroelectr Freq Control. 2007 Jul;54(7):1423-9. doi: 10.1109/tuffc.2007.402.
This article analyzes the propagation modes of ultrasound waves inside an electrical cable in order to assess its behavior as an acoustic transmission channel. A theoretical model for propagation of elastic waves in electric power cables is presented. The power cables are represented as viscoelastic-layered cylindrical structures with a copper core and a dielectric cover. The model equations then have been applied and numerically resolved for this and other known structures such as solid and hollow cylinders. The results are compared with available data from other models. Several experimental measures were carried out and were compared with results from the numerical simulations. Experimental and simulated results showed a significant difference between elastic wave attenuation inside standard versus bare, low-voltage power cables.
本文分析了超声波在电缆内部的传播模式，以便评估其作为声传输通道的性能。提出了一种用于弹性波在电力电缆中传播的理论模型。电力电缆被表示为具有铜芯和绝缘外皮的粘弹性分层圆柱结构。然后将模型方程应用于这种结构以及其他已知结构（如实心和空心圆柱体）并进行数值求解。将结果与其他模型的可用数据进行比较。进行了几项实验测量，并与数值模拟结果进行比较。实验和模拟结果表明，标准低压电力电缆与裸低压电力电缆内部的弹性波衰减存在显著差异。
