Pressure Pipeline Damage Identification Vibration Detection Method

Usually the ultrasonic detection is mainly mode of injures test . But the complexity of engineering environment and structures restricts the more extensive and effective utility of the ultrasonic detection. So the compensatory detection which is simple, convenient and not costly demonstrates its value and is far-flung attended by many scholars.Non-destructive test, with great prosperity and value of utility, which has been used the tests of engineering structures and the other defection of the material is one of the inversion of the engineering vibration.In this article, considering the character of the one-dimensioned continuum and the cross-section, the varied quotiety of the strain can be presented as the mode function to identify the damage. And inversion of the elastic wave is presented to detect the injures when the area is the variable of the inversion , for the pip usually buried under the earth or enwrapped into the protection make the detection difficulty by the mode of vibrancy. The influence of the area must be considered if the exactness is the pre-requisition. The experimentation is done to ensure the influence of the area.The method and technology presented in the article are demonstrated ?so the rationality and the feasibility is also obtained subsequently.