Study on compressed air leak detection using ultrasonic detection technology and instrument

Author(s):  
Pingping Liao ◽  
Maolin Cai
Author(s):  
ShuXian Yuan ◽  
Ming Li ◽  
GuanBing Ma ◽  
XueZhu Xiao ◽  
TianMing Lv

According to the method used in ENIQ (European Network of Inspection and Qualification), the performance demonstration of automatic ultrasonic inspection on the narrow-gap welds between the safe-ends (forging) and primary pipe (casting) in one PWR Nuclear Power Plant in China, was successfully finished. The visualization of the laser ultrasonic detection technology — which was introduced for the first time — and ultrasonic simulation technology, were used to study the dynamic propagation of the ultrasonic beam in the narrow-gap welds, in order to provide technical support for performance demonstration and field inspection.


2014 ◽  
Vol 11 (4) ◽  
pp. 397-402 ◽  
Author(s):  
Guimei Wang ◽  
Shuai Zhang

Recently, filling mining is becoming more and more important in the mining industry and has been used widely. In order to better control the process of paste filling mining and acquire the accurate amount of filling material used, and to reduce the waste of paste filling material, we should detect in real time the paste flow in the pipe during the process of filling. This paper introduces in detail the basic principle of ultrasonic detection technology and the hardware composition and working principle of the on-line detection system. The author uses the theory of unascertained error analysis of detecting data and implements ultrasonic detection technology to realize on-line detection of paste filling pipe flow.


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