Research progress of ultrasonic non-destructive evaluation for quality of remanufactured parts

Describe the application and research of ultrasonic nondestructive testing technology in remanufactured parts defects,residual stress,coating properties and other aspects,Summarize the latest research of scholars in above area,describe the basic principles,advantages and disadvantages of ultrasonic nondestructive testing technology assessment quality of remanufactured parts,comprehensively analyze the current research state,point out some urgent problems to be solved,prospect the future developments of ultrasonic nondestructive testing technology.