What technique might be used to locate hidden damage in frames?

The technique used to locate hidden damage in frames is ultrasonic testing. This non-destructive testing method employs high-frequency sound waves to detect internal flaws and inconsistencies within materials, particularly in structures like frames where damage may not be visible externally.

Ultrasonic testing is particularly effective for identifying cracks, voids, and inclusions within the material. As the sound waves travel through the frame, they reflect back from any discontinuities, which can then be interpreted by a technician to assess the condition of the material. This method is invaluable in structural analysis and damage repair, as it provides a thorough evaluation of the integrity of the frame without requiring invasive measures that could cause further damage.

While magnetic particle inspection, visual inspection, and infrared scanning all have their applications in detecting various types of damage or failures, they do not provide the same level of insight into hidden internal issues within the structure. For instance, visual inspection can identify surface defects but may miss underlying problems, while magnetic particle inspection is best suited for ferromagnetic materials and surface-related defects. Infrared scanning focuses on thermal differences and is useful for locating moisture intrusion and electrical issues rather than structural integrity concerns.