Fatigue testing of metal materials is a very important technology in the field of engineering. In this paper, we will focus on the fatigue defect detection of screws and nuts in metallic materials, and comprehensively analyze this problem from multiple perspectives.
Fatigue defect detection of metallic materials involves a variety of methods and techniques. Among them, non-destructive testing technology is a very effective means to find and evaluate the internal defects of screws and nuts without destroying their original structure. For example, ultrasonic testing is a commonly used non-destructive testing method in which a probe scans a screw or nut and analyzes the echo signal to determine whether a defect exists. In addition, techniques such as magnetic particle testing and eddy current testing can also be used for fatigue testing of screws and nuts.
Ultrasonic testing: It can detect cracks, inclusions and other defects inside the screw nut.
Magnetic particle inspection: suitable for detecting surface cracks and near-surface defects.
Eddy current testing: It can be used to detect cracks and defects on or near the surface.
In addition, there are some details and knowledge to consider when inspecting fatigue defects in metallic materials. For example, the temperature and humidity of the test environment can have an impact on the test results and need to be calibrated and corrected accordingly. In addition, the selection of testing equipment is also very important, different detection methods require different equipment, and choosing the right equipment can improve the accuracy and reliability of the test.