Detecting Hidden Internal Defects Without Cutting Into the Part

A solid part might contain an internal crack, void, or delamination that isn't visible from the outside, and it needs to be found without cutting into or damaging the part.

References

• Holmes, K.C., Milne, J.L.S. "Ultrahigh-Resolution Cryo-EM." Trends in Biochemical Sciences 37, no. 8 (2012): 317–323.