What type of materials can ultrasonic testing be performed on?

Ultrasonic testing (UT) is a versatile nondestructive testing method capable of evaluating a wide range of materials. This capability stems from the principle that ultrasonic waves can propagate through different mediums, allowing for their inspection regardless of the material type. Metals and alloys are commonly tested using UT due to their uniform structure and predictable responses to ultrasonic waves. However, the technique is not limited to just these materials; it is also effective on various plastics and composites, which can have different structural characteristics but still permit ultrasonic waves to pass through. Additionally, ceramics, known for their brittle nature, can be examined using UT to detect flaws and assess their integrity without causing damage.

The inclusion of multiple material types in ultrasonic testing makes it a highly adaptable and valuable method in various industries, including aerospace, automotive, and manufacturing. Hence, the correct answer acknowledges the broad applicability of ultrasonic testing across metals, plastics, and ceramics. This versatility is what establishes ultrasonic testing as an essential tool in the field of nondestructive testing.