关于提高超声法检测混凝土缺陷技术准确度的探讨  

On Improving the Technique of Testing of Concrete in Light of Ultrasonic-method

作　　者：王继维[1] 宋辉煌[2] 

机构地区：[1]中南大学,长沙市410083 [2]国防科技大学,长沙市410074

出　　处：《仪表技术与传感器》2001年第7期37-38,46,共3页Instrument Technique and Sensor

摘　　要：讨论了无损检测方法中的超声法 ,分析了超声波的基本特性、传播特点、检测中引起的误差及补偿 。As a usual method for testing concrete, it may test and destruct a prototype only once, which can not define the position, scope of drawbacks of concrete, and can not demonstrate the extent of structure damaged by the method. Nondestructive testing can abandon these shortcomings, so is valued and applied in the engineering practice. This article analyzes the ultrasonic method, one of nondestructive testing methods. It illustrates the basic natures, spreading characters of ultrasonic wave, viewing errors by this method and remedies. Finally, it stresses the importance and measure of improving the technique.

关 键 词：无损检测 超声法 频率特性 指向特性 准确度 混凝土 

分 类 号：TU528.07[建筑科学—建筑技术科学] TB553[理学—物理]