What is a common method for non-destructive testing of sheet metal structures?

Ultrasonic testing is a common method for non-destructive testing of sheet metal structures due to its capability to detect internal defects, measure thickness, and assess the integrity of material without damaging it. This method utilizes high-frequency sound waves that are sent into the material. When these waves encounter a flaw, such as a crack or void, they are reflected back, and this information can be analyzed to determine the condition of the structure.

Ultrasonic testing is particularly beneficial because it is sensitive to small defects, can provide precise measurements, and is suitable for a variety of material types, making it a versatile choice in many applications. Moreover, it can be performed on-site or in a controlled environment, which further enhances its practicality in maintaining the safety and reliability of sheet metal structures.

Other methods such as radiographic testing, eddy current testing, and visual inspection also have their applications, but they may not offer the same level of depth in detecting internal issues or assessing material thickness as ultrasonic testing does.