摘要
常规的混凝土检测采用破损检测 ,它只能对同一试件进行一次测试并损坏试件 ,而且无法检测出混凝土内部缺陷的位置与大小 ,也不能判断结构物遭受破坏的程度等 ,而无损检测方法可避免这些不足 ,因此在工程实际中日益得到重视和应用。无损检测方法很多 ,讨论的是其中的超声法 ,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 ,以及由此提高这一无损检测技术的准确度等。
The usual method of testing concrete may test and des truct a phototype only once and can not define the position,scope of drawbacks of concrete.It also can not demonstrate the extent of structure damaged by the method.Nondestructive testing can abandon these shortcomings.So it is valued and applied in the engineering practice.This article analyses the ultrasonic method -one of nondestructive testing methods.It analyses the basic natures,spreadin g characters of ultrasonic wave,errors and remedies.Finally,it stresses the imp ortance and measures of improving the technique.
出处
《传感器技术》
CSCD
2000年第5期39-41,共3页
Journal of Transducer Technology
关键词
无损检测
超声法
准确度
混凝土
缺陷
nondestructive testing
ultrasonic met hod
frequency character
directional property
accuracy
