What type of testing is characterized by evaluating integrity without damaging the part?

Non-destructive testing (NDT) is a critical methodology used in various industries to evaluate the integrity of materials, components, and structures without causing any permanent damage. This means that the parts being tested can continue to be used after the testing process. Methods utilized in NDT can include ultrasonic testing, magnetic particle testing, and radiographic testing, among others. These techniques allow for the detection of flaws, cracks, or other integrity issues within the material while preserving its usability.

In contrast, destructive testing involves applying forces or conditions that ultimately lead to the failure of the part, making it unsuitable for further use. Surface testing primarily focuses on assessing surface characteristics rather than overall integrity, and dimensional testing measures physical dimensions but does not address internal flaws or overall structural integrity. Therefore, non-destructive testing stands out as the method that maintains the integrity of the tested part while providing crucial insights into its reliability and safety.