The non-destructive testing of fault maintenance of CNC machine tools is a special technology to detect mechanical parts (metal and non-metal) to find surface and internal defects without destroying or changing the inspected object by using the characteristics of a physical property that changes due to the existence of defects.
Nondestructive testing technology is not only widely used in product quality management, but also of great significance to improve the operation reliability of equipment. Therefore, it has become an important part of mechanical fault diagnosis.
It is an important means to explore the root causes and mechanisms of faults, predict hidden dangers, and also a prerequisite for preventive maintenance. There are many methods of nondestructive testing, including ultrasonic testing, radiographic testing, magnetic particle testing, penetrant testing, eddy current testing and acoustic emission testing.
