Nondestructive Evaluation (NDE) is a measurement tool that can be used in the design, manufacture, and in-service inspection of products. It is a method of identifying nonvisible problems, such as stress concentrations, cracks, voids, and corrosion, within a structure without disassembly. NDE uses energy sources, such as photons or ultrasonic signals, to determine structural response. Thermography, ultrasound, eddy current, photoelasticity, thermoelasticity, and radiography are just a few of the NDE techniques used in the evaluation of composite and metallic parts for aircraft, automotive, civil, and other structures.
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