This method utilizes a guided-wave ultrasonic testing method to scan the pipeline first,and then finds out the unconventionality of the pipeline to make a precision inspection with the ultrasonic C-scan technique when necessary.

Firstly,many kinds of destructive test methods are compared, and C-scan ultrasonic test methodand A-scan ultrasonic test method are adopt to examine the defects of the part ofnonmetal composite material.

Using ultrasonic detection technology,we determine and test physical parameters and rock integrality of marble rock,point out rock take on high intensity which is great significance for the mine ore-evaluation of the stability on the upper level;at the same time,analysis of the distribution of the three marble rocks,provide an important basis for the extraction of marble.

Research on ultrasonic C-scan technique for large unsymmetric composite component;

An electron beam weld with complex geometrical structure was tested by using ultrasonic C-scan and a simulating testing piece was used in order to simplify experimental condition.

By using water immersion focusing method in an ultrasonic C-scan inspection system,the quality of Cu/steel surfacing weld was evaluated.

Based on the analysis of ultrasonic C-scanning fo r liner-clad adhesive state of steel-tube, this paper presents a fusion algorith m of detecting images gotten by multi-probes.