南京航空航天大学学报（英文版）2026，Vol.43Issue(2)：275-285,11.DOI:10.16356/j.1005-1120.2026.02.008
基底-冰层-空气界面超声波反射:粗糙度参数的作用
Reflection of Ultrasonic Wave on the Substrate-Ice Layer-Air Interface:The Role of Roughness Parameters
陆庆文 1王渊 1王敬鑫 1王岩 1朱春玲 2朱程香 1李斌 3任战鹏3
作者信息
- 1. 南京航空航天大学航空学院,南京 210016,中国
- 2. 南京航空航天大学航空学院,南京 210016,中国||南京航空航天大学航空航天机械结构力学与控制国家重点实验室,南京 210016,中国
- 3. 中国飞机强度研究所强度与结构完整性全国重点实验室,西安 710065,中国
- 折叠
摘要
Abstract
Ice accretion on transmission lines poses a severe threat to the safety of power grids.To achieve early icing warning and online ice thickness measurement,it is necessary to consider the effect of the rough ice layer on ultrasonic echo signals during the early icing stage.This study applied a sinusoidal equivalent roughness model to simplify the ice layer profile,and used PZFlex to numerically analyze the effects of the rough structure scale on the ultrasonic pulse-echo signals.The reflection coefficient of the ice-air layer interface was introduced to characterize small-scale roughness.It is found that the attenuation of pulse-echo signals is dominant by the height of rough structure.As the roughness upper ice layer increases,the interface reflection coefficient gradually decreases.When the roughness exceeds the critical value,the reflection coefficient shows independent with roughness.As the threshold of reflection coefficient is set as 0.25,the effective measurement range of roughness under different center frequencies of excitation signal sources is determined.The relationship between the reflection coefficient and roughness upper ice layer is established,enabling the quantitative identification of rough ice layer using the ultrasonic pulse-echo technique.The research can provide a technical basis for the accurate measurement of ice thickness above transmission lines.关键词
线缆结冰/冰粗糙度测量/超声测量技术/反射系数Key words
ice accretion on cables/ice roughness measurement/ultrasonic measurement technology/reflection coefficient分类
信息技术与安全科学引用本文复制引用
陆庆文,王渊,王敬鑫,王岩,朱春玲,朱程香,李斌,任战鹏..基底-冰层-空气界面超声波反射:粗糙度参数的作用[J].南京航空航天大学学报（英文版）,2026,43(2):275-285,11.
