Bridge crane girder NDT method of acoustic emission technology

First routine NDT (ultrasonic and magnetic particle testing surface) to determine whether there is crack  hoist gantry crane  beams exist, if there is no existing cracks in the appropriate location as artificial a crack test point, and then use hydraulic impulse fatigue testing machine loading crane girder as work load during the loading process for acoustic emission monitoring. Finally, the analysis of acoustic emission signals obtained, and evaluate the risk level of the crack.

Followed by lifting all the parts are not allowed to cracks and damage, agencies are not allowed in the test after cracking and permanent deformation damage;  overhead bridge crane  main NDT methods are: visual inspection, magnetic testing, metal magnetic memory testing, acoustic emission testing, stress-strain test and vibration test, mainly in the application installation and periodic testing, radiographic testing mainly used in the manufacture and installation, ultrasonic, magnetic particle and penetrant testing in the manufacture,overhead gantry crane installation and periodic inspection in both adoption. The metal magnetic memory testing, stress-strain test and vibration test is mainly used in the stress and structural evaluation and testing. Visual inspection of the main surface of the material state check (without corrosion, delamination, etc.) and metal structure geometry measurements, mainly gage measurements and visual observation.