Which of the following is not considered a nondestructive examination?

Tensile testing is not classified as a nondestructive examination because it involves applying a load to a material or component to determine its tensile strength and ductility. This process ultimately deforms and usually fractures the specimen, resulting in permanent damage that prevents further use of the test piece.

In contrast, techniques such as ultrasonic testing, radiographic testing, and magnetic particle testing are designed to assess material integrity without causing any harm. Ultrasonic testing uses high-frequency sound waves to detect internal flaws, while radiographic testing utilizes X-rays or gamma rays to view the internal structure. Magnetic particle testing identifies surface and near-surface discontinuities in ferromagnetic materials without altering the component's usability. This distinction underscores why tensile testing is labeled as destructive, while the other methods maintain the integrity of the tested items.