摘要
提出以临界角入射的纵波检测合成绝缘子横截面上裂纹。在模拟绝缘子芯棒的断裂过程中 ,用超声探测裂纹的大小和扩展速度来评价绝缘子的质量和各类材料绝缘子的承载能力 ,从而研究合成绝缘子可能发生的内绝缘故障以及发展机理。阐述了超声检测的理论依据 ,试验结果说明该方法可用于检测合成绝缘子芯棒裂纹。
A method for detecting the cracks in the cross-sections of composite insulators using the incident longitudinal waves at critical angle was presented. The method could be applied to determining the size and expansion velocity of the cracks induced by the imitated breakdown of core rod under laboratorial condition to evaluate the quality of insulators and bearing capacity of some other materials, thus researching on the possible internal defects and their developing mechanism. Ultrasonic testing theoretical basis was described and the experimental results given showed the feasibility of the method for detecting the cracks in composite insulator cores.
出处
《无损检测》
2003年第7期337-339,357,共4页
Nondestructive Testing
